STM32学习-使用dsp库的FFT函数测相位

ID:81272 · 发表于 2015-5-27 18:04

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使用dsp库的FFT函数测相位.rar (426.12 KB, 下载次数: 356)
stm32 dsp库下载：http://www.51hei.com/bbs/dpj-35381-1.html

/**
******************************************************************************
* @file FFT_Demo/src/main.c
* @author MCD Application Team
* @version V2.0.0
* @date 04/27/2009
* @brief Main program body
******************************************************************************
* @copy
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* <h2><center>© COPYRIGHT 2009 STMicroelectronics</center></h2>
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include <math.h>
#include "stm3210b_lcd.h"
#include "stm32_dsp.h"
#include "table_fft.h"
//------------------------------------------------------------------------------
#define FreqSample (50*NPT) // 50Hz*64=3200
#define ScalingFactor 20000 // 幅值系数,最大为32767
#define PERCENT_DC 0.06 // 直流分量对应的百分比,对应直流分量lBUFMAG[0]=1200
#define PI 3.1415926
#define PI2 6.28318530717959 // 2*3.14
#define NPT 256 /* 采样点数，必须为64,256,1024之一*/
#if (NPT==64)
#define cr4_fft_stm32 cr4_fft_64_stm32
#elif (NPT==256)
#define cr4_fft_stm32 cr4_fft_256_stm32
#else
#define cr4_fft_stm32 cr4_fft_1024_stm32
error!!!!
// 使用的ram超过了22K，超过了EK-STM32F仿真板上的STM32F103VBT6的ram
#endif
//------------------------------------------------------------------------------
extern volatile uint32_t TimingDelay ;
long lBUFIN[NPT]; /* Complex input vector */
long lBUFOUT[NPT]; /* Complex output vector */
long lBUFMAG[NPT + NPT/2]; /* Magnitude vector */
float lBUFPHASE[NPT + NPT/2];/* phase vector,单位为度 */
/* Private function prototypes -----------------------------------------------*/
void MyDualSweep(uint32_t freqinc1,uint32_t freqinc2);
void MygSin(long nfill, long Fs, long Freq1, long Freq2, long Ampli);
void powerMag(long nfill, char* strPara);
void power_Phase_Radians(long nfill);
void DSPDemoInit(void);
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
int main(void)
{
DSPDemoInit();
while (1)
{
MyDualSweep(FreqSample/NPT,6*FreqSample/NPT); // 测试fft
}
}
//-----------------------------------------------------------------------------
/**
* @brief Produces a combination of two sinewaves as input signal
* @param freq1: frequency increment for 1st sweep，频率步进值1
* Freq2: frequency increment for 2nd sweep，频率步进值2
* @retval : None
*/
void MyDualSweep(uint32_t freqinc1,uint32_t freqinc2)
{
uint32_t freq;
freq = freqinc1;
MygSin(NPT, FreqSample, freq, 0, ScalingFactor);
cr4_fft_stm32(lBUFOUT, lBUFIN, NPT);
powerMag(NPT,""); // lBUFIN[0]=1192 ,lBUFIN[1]=20008
power_Phase_Radians(NPT);
freq = freqinc1;
MygSin(NPT, FreqSample, freq, freqinc2, ScalingFactor);
cr4_fft_stm32(lBUFOUT, lBUFIN, NPT);
powerMag(NPT,""); // lBUFIN[0]=1192 ,lBUFIN[1]=20008, lBUFIN[6]=4000
power_Phase_Radians(NPT);
}
//------------------------------------------------------------------------------
/**
* @brief Produces a combination of two sinewaves as input signal
* @param ill: length of the array holding input signal
* Fs: sampling frequency
* Freq1: frequency of the 1st sinewave
* Freq2: frequency of the 2nd sinewave
* Ampli: scaling factor
* @retval : None
*/
void MygSin(long nfill, long Fs, long Freq1, long Freq2, long Ampli)
{
uint32_t i;
float fFs, fFreq1, fFreq2, fAmpli;
float fZ,fY;
fFs = (float) Fs;
fFreq1 = (float) Freq1;
fFreq2 = (float) Freq2;
fAmpli = (float) Ampli;
for (i=0; i < nfill; i++)
{
fY =PERCENT_DC/2 // 相位范围0°----360°
+ sin((196.0*PI/180.0)+PI2 * i * (fFreq1/fFs)) ;
if (fFreq2)
fY += 0.2*sin((293.0*PI/180.0)+PI2 * i * (fFreq2/fFs));
fZ = fAmpli * fY;
// lBUFIN数组中，每个单元数据高字(高16位)中存储采样数据的实部，低字(低16位)存储采样数据的虚部(总是为0)
lBUFIN[i]= ((short)fZ) << 16 ; /* sine_cosine (cos=0x0) */
// 高16bit为实部，低16bit为虚部，没有的话，就用0代替
}
}
//------------------------------------------------------------------------------
/**
* @brief Removes the aliased part of the spectrum (not tested)
* @param ill: length of the array holding power mag
* @retval : None
*/
void onesided(long nfill)
{
uint32_t i;
lBUFMAG[0] = lBUFMAG[0];
lBUFMAG[nfill/2] = lBUFMAG[nfill/2];
for (i=1; i < nfill/2; i++)
{
lBUFMAG[i] = lBUFMAG[i] + lBUFMAG[nfill-i];
lBUFMAG[nfill-i] = 0x0;
}
}
//------------------------------------------------------------------------------
/**
* @brief Compute power magnitude of the FFT transform 进行FFT变换，并计算各次谐波幅值
* @param ill: length of the array holding power mag
* : strPara: if set to "1SIDED", removes aliases part of spectrum (not tested)
* @retval : None
*/
void powerMag(long nfill, char* strPara)
{
int32_t lX,lY;
uint32_t i;
for (i=0; i < nfill/2; i++)
{
lX= (lBUFOUT[i]<<16)>>16; /* 取低16bit，sine_cosine --> cos */
lY= (lBUFOUT[i] >> 16); /* 取高16bit，sine_cosine --> sin */
{
float X= (float)lX*(NPT/32768.0);
float Y = (float)lY*(NPT/32768.0);
float Mag = sqrt(X*X+ Y*Y)/nfill;
lBUFMAG[i] = (uint32_t)(Mag*65536);
}
}
}
//------------------------------------------------------------------------------
/*
参考 labwindows的函数 ToPolar1D
Converts the set of rectangular coordinate points (arrayXReal, arrayXImg) to a
set of polar coordinate points (magnitude, phase). ToPolar1D obtains the
element of the polar coordinate set using the following formulas:
The phase value is in the range [-pi: pi].
ToPolar1D can perform the operations in place;
that is, the input and output arrays can be the same.
Prototype
AnalysisLibErrType ToPolar1D (double Array_X_Real[], double Array_X_Imaginary[], int Number_of_Elements, double Magnitude[], double Phase_Radians[]);
*/
void power_Phase_Radians(long nfill)
{
int32_t lX,lY;
uint32_t i;
for (i=0; i < nfill/2; i++)
{
lX= (lBUFOUT[i]<<16)>>16; /* 取低16bit，sine_cosine --> cos */
lY= (lBUFOUT[i] >> 16); /* 取高16bit，sine_cosine --> sin */
{
float X= NPT*((float)lX)/32768;
float Y = NPT*((float)lY)/32768;
float phase = atan(Y/X);
if (Y>=0)
{
if (X>=0)
;
else
phase+=PI;
}
else
{
if (X>=0)
phase+=PI2;
else
phase+=PI;
}
lBUFPHASE[i] = phase*180.0/PI;
}
}
}
//------------------------------------------------------------------------------
/**
* @brief Inserts a delay time.
* @param ount: specifies the delay time length (time base 10 ms).
* @retval : None
*/
void Delay(uint32_t nCount)
{
/* Configure the systick */
__enable_irq();
/* Setup SysTick Timer for 10 msec interrupts */
if (SysTick_Config(SystemFrequency /100)) /* SystemFrequency is defined in
搒ystem_stm32f10x.h?and equal to HCLK frequency */
{
/* Capture error */
while (1);
}
/* Enable the SysTick Counter */
TimingDelay = nCount;
while (TimingDelay ) {}
TimingDelay=0;
__disable_irq();
}
//------------------------------------------------------------------------------
/**
* @brief Initializes the DSP lib demo (clock, peripherals and LCD).
* @param None
* @retval : None
*/
void DSPDemoInit(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
ErrorStatus HSEStartUpStatus = ERROR;
/* SYSCLK, HCLK, PCLK2 and PCLK1 configuration -----------------------------*/
/* RCC system reset(for debug purpose) */
RCC_DeInit();
/* Enable HSE */
RCC_HSEConfig(RCC_HSE_ON);
/* Wait till HSE is ready */
HSEStartUpStatus = RCC_WaitForHSEStartUp();
if(HSEStartUpStatus == SUCCESS)
{
/* Enable Prefetch Buffer */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
/* Flash 2 wait state */
FLASH_SetLatency(FLASH_Latency_2);
/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);
/* PCLK2 = HCLK */
RCC_PCLK2Config(RCC_HCLK_Div1);
/* PCLK1 = HCLK/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);
/* PLLCLK = 8MHz * 9 = 72 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
/* Enable PLL */
RCC_PLLCmd(ENABLE);
/* Wait till PLL is ready */
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
{
}
/* Select PLL as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
/* Wait till PLL is used as system clock source */
while(RCC_GetSYSCLKSource() != 0x08)
{
}
}
/* Enable GPIOA, GPIOB, GPIOC, GPIOD, GPIOE and AFIO clocks */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |RCC_APB2Periph_GPIOC
| RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE | RCC_APB2Periph_AFIO, ENABLE);
/* TIM1 Periph clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
/* SPI2 Periph clock enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
/* TIM2 and TIM4 clocks enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2 | RCC_APB1Periph_TIM4, ENABLE);
/*------------------- Resources Initialization -----------------------------*/
/* GPIO Configuration */
/* Configure PC.06 and PC.07 as Output push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/*------------------- Drivers Initialization -------------------------------*/
/* Initialize the LCD */
STM3210B_LCD_Init();
/* Clear the LCD */
LCD_Clear(White);
LCD_SetTextColor(White);
LCD_SetBackColor(Black);
}
//------------------------------------------------------------------------------
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval : None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/

复制代码

/**
******************************************************************************
* @file FFT_Demo/src/stm3210b_lcd.c
* @author MCD Application Team
* @version V2.0.0
* @date 04/27/2009
* @brief This file includes the LCD driver for AM-240320LTNQW00H
* (LCD_HX8312), AM-240320L8TNQW00H (LCD_ILI9320),
* AM-240320LDTNQW00H (LCD_SPFD5408B) Liquid Crystal Display
* Module of STM3210B-EVAL board.
******************************************************************************
* @copy
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* <h2><center>© COPYRIGHT 2009 STMicroelectronics</center></h2>
*/
/* Includes ------------------------------------------------------------------*/
#include "stm3210b_lcd.h"
#include "fonts.h"
/** @addtogroup FFT_Demo
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define LCD_ILI9320 0x9320
#define LCD_HX8312 0x8312
#define LCD_SPFD5408 0x5408
#define START_BYTE 0x70
#define SET_INDEX 0x00
#define READ_STATUS 0x01
#define LCD_WRITE_REG 0x02
#define LCD_READ_REG 0x03
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Global variables to set the written text color */
static __IO uint16_t TextColor = 0x0000, BackColor = 0xFFFF;
static __IO uint32_t LCDType = LCD_ILI9320;
/* Private function prototypes -----------------------------------------------*/
static void LCD_WriteRegHX8312(uint8_t LCD_Reg, uint8_t LCD_RegValue);
static void LCD_WriteRegILI9320(uint8_t LCD_Reg, uint16_t LCD_RegValue);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Setups the LCD.
* @param None
* @retval : None
*/
void LCD_Setup(void)
{
/* Configure the LCD Control pins --------------------------------------------*/
LCD_CtrlLinesConfig();
/* Configure the SPI2 interface ----------------------------------------------*/
LCD_SPIConfig();
if(LCDType == LCD_ILI9320)
{
Delay(5); /* Delay 50 ms */
/* Start Initial Sequence ------------------------------------------------*/
LCD_WriteReg(R229, 0x8000); /* Set the internal vcore voltage */
LCD_WriteReg(R0, 0x0001); /* Start internal OSC. */
LCD_WriteReg(R1, 0x0100); /* set SS and SM bit */
LCD_WriteReg(R2, 0x0700); /* set 1 line inversion */
LCD_WriteReg(R3, 0x1030); /* set GRAM write direction and BGR=1. */
LCD_WriteReg(R4, 0x0000); /* Resize register */
LCD_WriteReg(R8, 0x0202); /* set the back porch and front porch */
LCD_WriteReg(R9, 0x0000); /* set non-display area refresh cycle ISC[3:0] */
LCD_WriteReg(R10, 0x0000); /* FMARK function */
LCD_WriteReg(R12, 0x0000); /* RGB interface setting */
LCD_WriteReg(R13, 0x0000); /* Frame marker Position */
LCD_WriteReg(R15, 0x0000); /* RGB interface polarity */
/* Power On sequence -----------------------------------------------------*/
LCD_WriteReg(R16, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
LCD_WriteReg(R17, 0x0000); /* DC1[2:0], DC0[2:0], VC[2:0] */
LCD_WriteReg(R18, 0x0000); /* VREG1OUT voltage */
LCD_WriteReg(R19, 0x0000); /* VDV[4:0] for VCOM amplitude */
Delay(20); /* Dis-charge capacitor power voltage (200ms) */
LCD_WriteReg(R16, 0x17B0); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
LCD_WriteReg(R17, 0x0137); /* DC1[2:0], DC0[2:0], VC[2:0] */
Delay(5); /* Delay 50 ms */
LCD_WriteReg(R18, 0x0139); /* VREG1OUT voltage */
Delay(5); /* Delay 50 ms */
LCD_WriteReg(R19, 0x1d00); /* VDV[4:0] for VCOM amplitude */
LCD_WriteReg(R41, 0x0013); /* VCM[4:0] for VCOMH */
Delay(5); /* Delay 50 ms */
LCD_WriteReg(R32, 0x0000); /* GRAM horizontal Address */
LCD_WriteReg(R33, 0x0000); /* GRAM Vertical Address */
/* Adjust the Gamma Curve ------------------------------------------------*/
LCD_WriteReg(R48, 0x0006);
LCD_WriteReg(R49, 0x0101);
LCD_WriteReg(R50, 0x0003);
LCD_WriteReg(R53, 0x0106);
LCD_WriteReg(R54, 0x0b02);
LCD_WriteReg(R55, 0x0302);
LCD_WriteReg(R56, 0x0707);
LCD_WriteReg(R57, 0x0007);
LCD_WriteReg(R60, 0x0600);
LCD_WriteReg(R61, 0x020b);
/* Set GRAM area ---------------------------------------------------------*/
LCD_WriteReg(R80, 0x0000); /* Horizontal GRAM Start Address */
LCD_WriteReg(R81, 0x00EF); /* Horizontal GRAM End Address */
LCD_WriteReg(R82, 0x0000); /* Vertical GRAM Start Address */
LCD_WriteReg(R83, 0x013F); /* Vertical GRAM End Address */
LCD_WriteReg(R96, 0x2700); /* Gate Scan Line */
LCD_WriteReg(R97, 0x0001); /* NDL,VLE, REV */
LCD_WriteReg(R106, 0x0000); /* set scrolling line */
/* Partial Display Control -----------------------------------------------*/
LCD_WriteReg(R128, 0x0000);
LCD_WriteReg(R129, 0x0000);
LCD_WriteReg(R130, 0x0000);
LCD_WriteReg(R131, 0x0000);
LCD_WriteReg(R132, 0x0000);
LCD_WriteReg(R133, 0x0000);
/* Panel Control ---------------------------------------------------------*/
LCD_WriteReg(R144, 0x0010);
LCD_WriteReg(R146, 0x0000);
LCD_WriteReg(R147, 0x0003);
LCD_WriteReg(R149, 0x0110);
LCD_WriteReg(R151, 0x0000);
LCD_WriteReg(R152, 0x0000);
/* Set GRAM write direction and BGR = 1 */
/* I/D=01 (Horizontal : increment, Vertical : decrement) */
/* AM=1 (address is updated in vertical writing direction) */
LCD_WriteReg(R3, 0x1018);
LCD_WriteReg(R7, 0x0173); /* 262K color and display ON */
}
else if(LCDType == LCD_SPFD5408)
{
/* Start Initial Sequence --------------------------------------------------*/
LCD_WriteReg(R227, 0x3008); /* Set internal timing */
LCD_WriteReg(R231, 0x0012); /* Set internal timing */
LCD_WriteReg(R239, 0x1231); /* Set internal timing */
LCD_WriteReg(R1, 0x0100); /* Set SS and SM bit */
LCD_WriteReg(R2, 0x0700); /* Set 1 line inversion */
LCD_WriteReg(R3, 0x1030); /* Set GRAM write direction and BGR=1. */
LCD_WriteReg(R4, 0x0000); /* Resize register */
LCD_WriteReg(R8, 0x0202); /* Set the back porch and front porch */
LCD_WriteReg(R9, 0x0000); /* Set non-display area refresh cycle ISC[3:0] */
LCD_WriteReg(R10, 0x0000); /* FMARK function */
LCD_WriteReg(R12, 0x0000); /* RGB interface setting */
LCD_WriteReg(R13, 0x0000); /* Frame marker Position */
LCD_WriteReg(R15, 0x0000); /* RGB interface polarity */
/* Power On sequence -------------------------------------------------------*/
LCD_WriteReg(R16, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
LCD_WriteReg(R17, 0x0000); /* DC1[2:0], DC0[2:0], VC[2:0] */
LCD_WriteReg(R18, 0x0000); /* VREG1OUT voltage */
LCD_WriteReg(R19, 0x0000); /* VDV[4:0] for VCOM amplitude */
Delay(20); /* Dis-charge capacitor power voltage (200ms) */
LCD_WriteReg(R17, 0x0007); /* DC1[2:0], DC0[2:0], VC[2:0] */
Delay(5); /* Delay 50 ms */
LCD_WriteReg(R16, 0x12B0); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
Delay(5); /* Delay 50 ms */
LCD_WriteReg(R18, 0x01BD); /* External reference voltage= Vci */
Delay(5); /* Delay 50 ms */
LCD_WriteReg(R19, 0x1400); /* VDV[4:0] for VCOM amplitude */
LCD_WriteReg(R41, 0x000E); /* VCM[4:0] for VCOMH */
Delay(5); /* Delay 50 ms */
LCD_WriteReg(R32, 0x0000); /* GRAM horizontal Address */
LCD_WriteReg(R33, 0x013F); /* GRAM Vertical Address */
/* Adjust the Gamma Curve --------------------------------------------------*/
LCD_WriteReg(R48, 0x0007);
LCD_WriteReg(R49, 0x0302);
LCD_WriteReg(R50, 0x0105);
LCD_WriteReg(R53, 0x0206);
LCD_WriteReg(R54, 0x0808);
LCD_WriteReg(R55, 0x0206);
LCD_WriteReg(R56, 0x0504);
LCD_WriteReg(R57, 0x0007);
LCD_WriteReg(R60, 0x0105);
LCD_WriteReg(R61, 0x0808);
/* Set GRAM area -----------------------------------------------------------*/
LCD_WriteReg(R80, 0x0000); /* Horizontal GRAM Start Address */
LCD_WriteReg(R81, 0x00EF); /* Horizontal GRAM End Address */
LCD_WriteReg(R82, 0x0000); /* Vertical GRAM Start Address */
LCD_WriteReg(R83, 0x013F); /* Vertical GRAM End Address */
LCD_WriteReg(R96, 0xA700); /* Gate Scan Line */
LCD_WriteReg(R97, 0x0001); /* NDL,VLE, REV */
LCD_WriteReg(R106, 0x0000); /* Set scrolling line */
/* Partial Display Control -------------------------------------------------*/
LCD_WriteReg(R128, 0x0000);
LCD_WriteReg(R129, 0x0000);
LCD_WriteReg(R130, 0x0000);
LCD_WriteReg(R131, 0x0000);
LCD_WriteReg(R132, 0x0000);
LCD_WriteReg(R133, 0x0000);
/* Panel Control -----------------------------------------------------------*/
LCD_WriteReg(R144, 0x0010);
LCD_WriteReg(R146, 0x0000);
LCD_WriteReg(R147, 0x0003);
LCD_WriteReg(R149, 0x0110);
LCD_WriteReg(R151, 0x0000);
LCD_WriteReg(R152, 0x0000);
/* Set GRAM write direction and BGR = 1
I/D=01 (Horizontal : increment, Vertical : decrement)
AM=1 (address is updated in vertical writing direction) */
LCD_WriteReg(R3, 0x1018);
LCD_WriteReg(R7, 0x0112); /* 262K color and display ON */
}
else if(LCDType == LCD_HX8312)
{
/* Enable the LCD Oscillator ---------------------------------------------*/
LCD_WriteReg(R1, 0x10);
LCD_WriteReg(R0, 0xA0);
LCD_WriteReg(R3, 0x01);
Delay(1); /* Delay 10 ms */
LCD_WriteReg(R3, 0x00);
LCD_WriteReg(R43, 0x04);
LCD_WriteReg(R40, 0x18);
LCD_WriteReg(R26, 0x05);
LCD_WriteReg(R37, 0x05);
LCD_WriteReg(R25, 0x00);
/* LCD Power On ----------------------------------------------------------*/
LCD_WriteReg(R28, 0x73);
LCD_WriteReg(R36, 0x74);
LCD_WriteReg(R30, 0x01);
LCD_WriteReg(R24, 0xC1);
Delay(1); /* Delay 10 ms */
LCD_WriteReg(R24, 0xE1);
LCD_WriteReg(R24, 0xF1);
Delay(6); /* Delay 60 ms */
LCD_WriteReg(R24, 0xF5);
Delay(6); /* Delay 60 ms */
LCD_WriteReg(R27, 0x09);
Delay(1); /* Delay 10 ms */
LCD_WriteReg(R31, 0x11);
LCD_WriteReg(R32, 0x0E);
LCD_WriteReg(R30, 0x81);
Delay(1); /* Delay 10 ms */
/* Chip Set --------------------------------------------------------------*/
LCD_WriteReg(R157, 0x00);
LCD_WriteReg(R192, 0x00);
LCD_WriteReg(R14, 0x00);
LCD_WriteReg(R15, 0x00);
LCD_WriteReg(R16, 0x00);
LCD_WriteReg(R17, 0x00);
LCD_WriteReg(R18, 0x00);
LCD_WriteReg(R19, 0x00);
LCD_WriteReg(R20, 0x00);
LCD_WriteReg(R21, 0x00);
LCD_WriteReg(R22, 0x00);
LCD_WriteReg(R23, 0x00);
LCD_WriteReg(R52, 0x01);
LCD_WriteReg(R53, 0x00);
LCD_WriteReg(R75, 0x00);
LCD_WriteReg(R76, 0x00);
LCD_WriteReg(R78, 0x00);
LCD_WriteReg(R79, 0x00);
LCD_WriteReg(R80, 0x00);
LCD_WriteReg(R60, 0x00);
LCD_WriteReg(R61, 0x00);
LCD_WriteReg(R62, 0x01);
LCD_WriteReg(R63, 0x3F);
LCD_WriteReg(R64, 0x02);
LCD_WriteReg(R65, 0x02);
LCD_WriteReg(R66, 0x00);
LCD_WriteReg(R67, 0x00);
LCD_WriteReg(R68, 0x00);
LCD_WriteReg(R69, 0x00);
LCD_WriteReg(R70, 0xEF);
LCD_WriteReg(R71, 0x00);
LCD_WriteReg(R72, 0x00);
LCD_WriteReg(R73, 0x01);
LCD_WriteReg(R74, 0x3F);
LCD_WriteReg(R29, 0x08); /* R29:Gate scan direction setting */
LCD_WriteReg(R134, 0x00);
LCD_WriteReg(R135, 0x30);
LCD_WriteReg(R136, 0x02);
LCD_WriteReg(R137, 0x05);
LCD_WriteReg(R141, 0x01); /* R141:Register set-up mode for one line clock */
LCD_WriteReg(R139, 0x20); /* R139:One line SYSCLK number in one-line */
LCD_WriteReg(R51, 0x01); /* R51:N line inversion setting */
LCD_WriteReg(R55, 0x01); /* R55:Scanning method setting */
LCD_WriteReg(R118, 0x00);
/* Gamma Set -------------------------------------------------------------*/
LCD_WriteReg(R143, 0x10);
LCD_WriteReg(R144, 0x67);
LCD_WriteReg(R145, 0x07);
LCD_WriteReg(R146, 0x65);
LCD_WriteReg(R147, 0x07);
LCD_WriteReg(R148, 0x01);
LCD_WriteReg(R149, 0x76);
LCD_WriteReg(R150, 0x56);
LCD_WriteReg(R151, 0x00);
LCD_WriteReg(R152, 0x06);
LCD_WriteReg(R153, 0x03);
LCD_WriteReg(R154, 0x00);
/* Display On ------------------------------------------------------------*/
LCD_WriteReg(R1, 0x50);
LCD_WriteReg(R5, 0x04);
LCD_WriteReg(R0, 0x80);
LCD_WriteReg(R59, 0x01);
Delay(4); /* Delay 40 ms */
LCD_WriteReg(R0, 0x20);
}
}
/**
* @brief Initializes the LCD.
* @param None
* @retval : None
*/
void STM3210B_LCD_Init(void)
{
/* Setups the LCD */
LCD_Setup();
/* Try to read new LCD controller ID 0x9320 */
if (LCD_ReadReg(R0) == LCD_ILI9320)
{
LCDType = LCD_ILI9320;
}
else
{
LCDType = LCD_SPFD5408;
/* Setups the LCD */
LCD_Setup();
/* Try to read new LCD controller ID 0x5408 */
if (LCD_ReadReg(R0) != LCD_SPFD5408)
{
LCDType = LCD_HX8312;
/* Setups the LCD */
LCD_Setup();
}
}
}
/**
* @brief Sets the Text color.
* @param Color: specifies the Text color code RGB(5-6-5).
* and LCD_DrawPicture functions.
* @retval : None
*/
void LCD_SetTextColor(__IO uint16_t Color)
{
TextColor = Color;
}
/**
* @brief Sets the Background color.
* @param Color: specifies the Background color code RGB(5-6-5).
* LCD_DrawChar and LCD_DrawPicture functions.
* @retval : None
*/
void LCD_SetBackColor(__IO uint16_t Color)
{
BackColor = Color;
}
/**
* @brief Clears the selected line.
* @param Line: the Line to be cleared.
* This parameter can be one of the following values:
* @arg Linex: where x can be 0..9
* @retval : None
*/
void LCD_ClearLine(uint8_t Line)
{
LCD_DisplayStringLine(Line, " ");
}
/**
* @brief Clears the hole LCD.
* @param lor: the color of the background.
* @retval : None
*/
void LCD_Clear(uint16_t Color)
{
uint32_t index = 0;
LCD_SetCursor(0x00, 0x013F);
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */
}
for(index = 0; index < 76800; index++)
{
LCD_WriteRAM(Color);
}
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
}
}
/**
* @brief Sets the cursor position.
* @param Xpos: specifies the X position.
* @param Ypos: specifies the Y position.
* @retval : None
*/
void LCD_SetCursor(uint8_t Xpos, uint16_t Ypos)
{
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_WriteReg(R32, Xpos);
LCD_WriteReg(R33, Ypos);
}
else if(LCDType == LCD_HX8312)
{
LCD_WriteReg(R66, Xpos);
LCD_WriteReg(R67, ((Ypos & 0x100)>> 8));
LCD_WriteReg(R68, (Ypos & 0xFF));
}
}
/**
* @brief Draws a character on LCD.
* @param Xpos: the Line where to display the character shape.
* This parameter can be one of the following values:
* @param Linex: where x can be 0..9
* @param Ypos: start column address.
* @param c: pointer to the character data.
* @retval : None
*/
void LCD_DrawChar(uint8_t Xpos, uint16_t Ypos, const uint16_t *c)
{
uint32_t index = 0, i = 0;
uint8_t Xaddress = 0;
Xaddress = Xpos;
LCD_SetCursor(Xaddress, Ypos);
for(index = 0; index < 24; index++)
{
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */
}
for(i = 0; i < 16; i++)
{
if((c[index] & (1 << i)) == 0x00)
{
LCD_WriteRAM(BackColor);
}
else
{
LCD_WriteRAM(TextColor);
}
}
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
}
Xaddress++;
LCD_SetCursor(Xaddress, Ypos);
}
}
/**
* @brief Displays one character (16dots width, 24dots height).
* @param Line: the Line where to display the character shape .
* This parameter can be one of the following values:
* @arg Linex: where x can be 0..9
* @param Column: start column address.
* @param Ascii: character ascii code, must be between 0x20 and 0x7E.
* @retval : None
*/
void LCD_DisplayChar(uint8_t Line, uint16_t Column, uint8_t Ascii)
{
Ascii -= 32;
LCD_DrawChar(Line, Column, &ASCII_Table[Ascii * 24]);
}
/**
* @brief Displays a maximum of 20 char on the LCD.
* @param Line: the Line where to display the character shape .
* This parameter can be one of the following values:
* @arg Linex: where x can be 0..9
* @param *ptr: pointer to string to display on LCD.
* @retval : None
*/
void LCD_DisplayStringLine(uint8_t Line, uint8_t *ptr)
{
uint32_t i = 0;
uint16_t refcolumn = 319;
/* Send the string character by character on lCD */
while ((*ptr != 0) & (i < 20))
{
/* Display one character on LCD */
LCD_DisplayChar(Line, refcolumn, *ptr);
/* Decrement the column position by 16 */
refcolumn -= 16;
/* Point on the next character */
ptr++;
/* Increment the character counter */
i++;
}
}
/**
* @brief Sets a display window
* @param Xpos: specifies the X buttom left position.
* @param Ypos: specifies the Y buttom left position.
* @param Height: display window height.
* @param Width: display window width.
* @retval : None
*/
void LCD_SetDisplayWindow(uint8_t Xpos, uint16_t Ypos, uint8_t Height, uint16_t Width)
{
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
/* Horizontal GRAM Start Address */
if(Xpos >= Height)
{
LCD_WriteReg(R80, (Xpos - Height + 1));
}
else
{
LCD_WriteReg(R80, 0);
}
/* Horizontal GRAM End Address */
LCD_WriteReg(R81, Xpos);
/* Vertical GRAM Start Address */
if(Ypos >= Width)
{
LCD_WriteReg(R82, (Ypos - Width + 1));
}
else
{
LCD_WriteReg(R82, 0);
}
/* Vertical GRAM End Address */
LCD_WriteReg(R83, Ypos);
}
else if(LCDType == LCD_HX8312)
{
LCD_WriteReg(R1, 0xD0);
LCD_WriteReg(R5, 0x14);
LCD_WriteReg(R69, (Xpos - Height + 1));
LCD_WriteReg(R70, Xpos);
LCD_WriteReg(R71, (((Ypos - Width + 1) & 0x100)>> 8));
LCD_WriteReg(R72, ((Ypos - Width + 1) & 0xFF));
LCD_WriteReg(R73, ((Ypos & 0x100)>> 8));
LCD_WriteReg(R74, (Ypos & 0xFF));
}
LCD_SetCursor(Xpos, Ypos);
}
/**
* @brief Disables LCD Window mode.
* @param None
* @retval : None
*/
void LCD_WindowModeDisable(void)
{
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_SetDisplayWindow(239, 0x13F, 240, 320);
LCD_WriteReg(R3, 0x1018);
}
else if(LCDType == LCD_HX8312)
{
LCD_WriteReg(R1, 0x50);
LCD_WriteReg(R5, 0x04);
}
}
/**
* @brief Displays a line.
* @param Xpos: specifies the X position.
* @param Ypos: specifies the Y position.
* @param Length: line length.
* @param Direction: line direction.
* This parameter can be one of the following values: Vertical
* or Horizontal.
* @retval : None
*/
void LCD_DrawLine(uint8_t Xpos, uint16_t Ypos, uint16_t Length, uint8_t Direction)
{
uint32_t i = 0;
LCD_SetCursor(Xpos, Ypos);
if(Direction == Horizontal)
{
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */
}
for(i = 0; i < Length; i++)
{
LCD_WriteRAM(TextColor);
}
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
}
}
else
{
for(i = 0; i < Length; i++)
{
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_WriteRAMWord(TextColor);
}
else if(LCDType == LCD_HX8312)
{
LCD_WriteRAM(TextColor);
}
Xpos++;
LCD_SetCursor(Xpos, Ypos);
}
}
}
/**
* @brief Displays a rectangle.
* @param Xpos: specifies the X position.
* @param Ypos: specifies the Y position.
* @param Height: display rectangle height.
* @param Width: display rectangle width.
* @retval : None
*/
void LCD_DrawRect(uint8_t Xpos, uint16_t Ypos, uint8_t Height, uint16_t Width)
{
LCD_DrawLine(Xpos, Ypos, Width, Horizontal);
LCD_DrawLine((Xpos + Height), Ypos, Width, Horizontal);
LCD_DrawLine(Xpos, Ypos, Height, Vertical);
LCD_DrawLine(Xpos, (Ypos - Width + 1), Height, Vertical);
}
/**
* @brief Displays a circle.
* @param Xpos: specifies the X position.
* @param Ypos: specifies the Y position.
* @param Height: display rectangle height.
* @param Width: display rectangle width.
* @retval : None
*/
void LCD_DrawCircle(uint8_t Xpos, uint16_t Ypos, uint16_t Radius)
{
int32_t D;/* Decision Variable */
uint32_t CurX;/* Current X Value */
uint32_t CurY;/* Current Y Value */
D = 3 - (Radius << 1);
CurX = 0;
CurY = Radius;
while (CurX <= CurY)
{
LCD_SetCursor(Xpos + CurX, Ypos + CurY);
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_WriteRAMWord(TextColor);
}
else if(LCDType == LCD_HX8312)
{
LCD_WriteRAM(TextColor);
}
LCD_SetCursor(Xpos + CurX, Ypos - CurY);
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_WriteRAMWord(TextColor);
}
else if(LCDType == LCD_HX8312)
{
LCD_WriteRAM(TextColor);
}
LCD_SetCursor(Xpos - CurX, Ypos + CurY);
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_WriteRAMWord(TextColor);
}
else if(LCDType == LCD_HX8312)
{
LCD_WriteRAM(TextColor);
}
LCD_SetCursor(Xpos - CurX, Ypos - CurY);
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_WriteRAMWord(TextColor);
}
else if(LCDType == LCD_HX8312)
{
LCD_WriteRAM(TextColor);
}
LCD_SetCursor(Xpos + CurY, Ypos + CurX);
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_WriteRAMWord(TextColor);
}
else if(LCDType == LCD_HX8312)
{
LCD_WriteRAM(TextColor);
}
LCD_SetCursor(Xpos + CurY, Ypos - CurX);
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_WriteRAMWord(TextColor);
}
else if(LCDType == LCD_HX8312)
{
LCD_WriteRAM(TextColor);
}
LCD_SetCursor(Xpos - CurY, Ypos + CurX);
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_WriteRAMWord(TextColor);
}
else if(LCDType == LCD_HX8312)
{
LCD_WriteRAM(TextColor);
}
LCD_SetCursor(Xpos - CurY, Ypos - CurX);
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_WriteRAMWord(TextColor);
}
else if(LCDType == LCD_HX8312)
{
LCD_WriteRAM(TextColor);
}
if (D < 0)
{
D += (CurX << 2) + 6;
}
else
{
D += ((CurX - CurY) << 2) + 10;
CurY--;
}
CurX++;
}
}
/**
* @brief Displays a monocolor picture.
* @param Pict: pointer to the picture array.
* @retval : None
*/
void LCD_DrawMonoPict(const uint32_t *Pict)
{
uint32_t index = 0, i = 0;
LCD_SetCursor(0, 319);
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */
}
for(index = 0; index < 2400; index++)
{
for(i = 0; i < 32; i++)
{
if((Pict[index] & (1 << i)) == 0x00)
{
LCD_WriteRAM(BackColor);
}
else
{
LCD_WriteRAM(TextColor);
}
}
}
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
}
}
/**
* @brief Reset LCD control line(/CS) and Send Start-Byte
* @param Start_Byte: the Start-Byte to be sent
* @retval : None
*/
void LCD_nCS_StartByte(uint8_t Start_Byte)
{
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_RESET);
SPI_I2S_SendData(SPI2, Start_Byte);
while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_BSY) != RESET)
{
}
}
/**
* @brief Writes index to select the LCD register.
* @param LCD_Reg: address of the selected register.
* @retval : None
*/
void LCD_WriteRegIndex(uint8_t LCD_Reg)
{
/* Reset LCD control line(/CS) and Send Start-Byte */
LCD_nCS_StartByte(START_BYTE | SET_INDEX);
/* Write 16-bit Reg Index (High Byte is 0) */
SPI_I2S_SendData(SPI2, 0x00);
while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_BSY) != RESET)
{
}
SPI_I2S_SendData(SPI2, LCD_Reg);
while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_BSY) != RESET)
{
}
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
}
/**
* @brief Writes to the selected LCD ILI9320 register.
* @param LCD_Reg: address of the selected register.
* @arg LCD_RegValue: value to write to the selected register.
* @retval : None
*/
static void LCD_WriteRegILI9320(uint8_t LCD_Reg, uint16_t LCD_RegValue)
{
/* Write 16-bit Index (then Write Reg) */
LCD_WriteRegIndex(LCD_Reg);
/* Write 16-bit Reg */
/* Reset LCD control line(/CS) and Send Start-Byte */
LCD_nCS_StartByte(START_BYTE | LCD_WRITE_REG);
SPI_I2S_SendData(SPI2, LCD_RegValue>>8);
while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_BSY) != RESET)
{
}
SPI_I2S_SendData(SPI2, (LCD_RegValue & 0xFF));
while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_BSY) != RESET)
{
}
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
}
/**
* @brief Reads the selected LCD Register.
* @param None
* @retval : LCD Register Value.
*/
uint16_t LCD_ReadReg(uint8_t LCD_Reg)
{
uint16_t tmp = 0;
uint8_t i = 0;
/* SPI2 prescaler: 4 */
SPI2->CR1 &= 0xFFC7;
SPI2->CR1 |= 0x0008;
/* Write 16-bit Index (then Read Reg) */
LCD_WriteRegIndex(LCD_Reg);
/* Read 16-bit Reg */
/* Reset LCD control line(/CS) and Send Start-Byte */
LCD_nCS_StartByte(START_BYTE | LCD_READ_REG);
for(i = 0; i < 5; i++)
{
SPI_I2S_SendData(SPI2, 0xFF);
while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_BSY) != RESET)
{
}
/* One byte of invalid dummy data read after the start byte */
while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET)
{
}
SPI_I2S_ReceiveData(SPI2);
}
SPI_I2S_SendData(SPI2, 0xFF);
/* Read upper byte */
while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_BSY) != RESET)
{
}
/* Read lower byte */
while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET)
{
}
tmp = SPI_I2S_ReceiveData(SPI2);
SPI_I2S_SendData(SPI2, 0xFF);
while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_BSY) != RESET)
{
}
/* Read lower byte */
while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET)
{
}
tmp = ((tmp & 0xFF) << 8) | SPI_I2S_ReceiveData(SPI2);
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
/* SPI2 prescaler: 2 */
SPI2->CR1 &= 0xFFC7;
return tmp;
}
/**
* @brief Prepare to write to the LCD RAM.
* @param None
* @retval : None
*/
void LCD_WriteRAM_Prepare(void)
{
LCD_WriteRegIndex(R34); /* Select GRAM Reg */
/* Reset LCD control line(/CS) and Send Start-Byte */
LCD_nCS_StartByte(START_BYTE | LCD_WRITE_REG);
}
/**
* @brief Writes 1 word to the LCD RAM.
* @param RGB_Code: the pixel color in RGB mode (5-6-5).
* @retval : None
*/
void LCD_WriteRAMWord(uint16_t RGB_Code)
{
LCD_WriteRAM_Prepare();
LCD_WriteRAM(RGB_Code);
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
}
/**
* @brief Writes to the selected LCD HX8312 register.
* @param LCD_Reg: address of the selected register.
* @arg LCD_RegValue: value to write to the selected register.
* @retval : None
*/
static void LCD_WriteRegHX8312(uint8_t LCD_Reg, uint8_t LCD_RegValue)
{
uint16_t tmp = 0;
LCD_CtrlLinesWrite(GPIOD, CtrlPin_NWR, Bit_RESET);
LCD_CtrlLinesWrite(GPIOD, CtrlPin_RS, Bit_RESET);
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_RESET);
tmp = LCD_Reg << 8;
tmp |= LCD_RegValue;
SPI_I2S_SendData(SPI2, tmp);
while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_BSY) != RESET)
{
}
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
}
/**
* @brief Writes to the selected LCD register.
* @param LCD_Reg: address of the selected register.
* @arg LCD_RegValue: value to write to the selected register.
* @retval : None
*/
void LCD_WriteReg(uint8_t LCD_Reg, uint16_t LCD_RegValue)
{
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
LCD_WriteRegILI9320(LCD_Reg, LCD_RegValue);
}
else if(LCDType == LCD_HX8312)
{
LCD_WriteRegHX8312(LCD_Reg, ((uint8_t)LCD_RegValue));
}
}
/**
* @brief Writes to the LCD RAM.
* @param RGB_Code: the pixel color in RGB mode (5-6-5).
* @retval : None
*/
void LCD_WriteRAM(uint16_t RGB_Code)
{
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
SPI_I2S_SendData(SPI2, RGB_Code >> 8);
while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_BSY) != RESET)
{
}
SPI_I2S_SendData(SPI2, RGB_Code & 0xFF);
while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_BSY) != RESET)
{
}
}
if(LCDType == LCD_HX8312)
{
LCD_CtrlLinesWrite(GPIOD, CtrlPin_NWR, Bit_RESET);
LCD_CtrlLinesWrite(GPIOD, CtrlPin_RS, Bit_SET);
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_RESET);
SPI_I2S_SendData(SPI2, RGB_Code);
while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_BSY) != RESET)
{
}
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
}
}
/**
* @brief Power on the LCD.
* @param None
* @retval : None
*/
void LCD_PowerOn(void)
{
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
/* Power On sequence ---------------------------------------------------------*/
LCD_WriteReg(R16, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
LCD_WriteReg(R17, 0x0000); /* DC1[2:0], DC0[2:0], VC[2:0] */
LCD_WriteReg(R18, 0x0000); /* VREG1OUT voltage */
LCD_WriteReg(R19, 0x0000); /* VDV[4:0] for VCOM amplitude */
Delay(20); /* Dis-charge capacitor power voltage (200ms) */
LCD_WriteReg(R16, 0x17B0); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
LCD_WriteReg(R17, 0x0137); /* DC1[2:0], DC0[2:0], VC[2:0] */
Delay(5); /* Delay 50 ms */
LCD_WriteReg(R18, 0x0139); /* VREG1OUT voltage */
Delay(5); /* delay 50 ms */
LCD_WriteReg(R19, 0x1d00); /* VDV[4:0] for VCOM amplitude */
LCD_WriteReg(R41, 0x0013); /* VCM[4:0] for VCOMH */
Delay(5); /* delay 50 ms */
LCD_WriteReg(R7, 0x0173); /* 262K color and display ON */
}
else if(LCDType == LCD_HX8312)
{
/* Power On Set */
LCD_WriteReg(R28, 0x73);
LCD_WriteReg(R36, 0x74);
LCD_WriteReg(R30, 0x01);
LCD_WriteReg(R24, 0xC1);
Delay(1); /* Delay 10 ms */
LCD_WriteReg(R24, 0xE1);
LCD_WriteReg(R24, 0xF1);
Delay(6); /* Delay 60 ms */
LCD_WriteReg(R24, 0xF5);
Delay(6); /* Delay 60 ms */
LCD_WriteReg(R27, 0x09);
Delay(1); /* Delay 10 ms */
LCD_WriteReg(R31, 0x11);
LCD_WriteReg(R32, 0x0E);
LCD_WriteReg(R30, 0x81);
Delay(1); /* Delay 10 ms */
}
}
/**
* @brief Enables the Display.
* @param None
* @retval : None
*/
void LCD_DisplayOn(void)
{
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
/* Display On */
LCD_WriteReg(R7, 0x0173); /* 262K color and display ON */
}
else if(LCDType == LCD_HX8312)
{
LCD_WriteReg(R1, 0x50);
LCD_WriteReg(R5, 0x04);
/* Display On */
LCD_WriteReg(R0, 0x80);
LCD_WriteReg(R59, 0x01);
Delay(4); /* Delay 40 ms */
LCD_WriteReg(R0, 0x20);
}
}
/**
* @brief Disables the Display.
* @param None
* @retval : None
*/
void LCD_DisplayOff(void)
{
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
/* Display Off */
LCD_WriteReg(R7, 0x0);
}
else if(LCDType == LCD_HX8312)
{
/* Display Off */
LCD_WriteReg(R0, 0xA0);
Delay(4); /* Delay 40 ms */
LCD_WriteReg(R59, 0x00);
}
}
/**
* @brief Configures LCD control lines in Output Push-Pull mode.
* @param None
* @retval : None
*/
void LCD_CtrlLinesConfig(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Configure NCS (PB.02) in Output Push-Pull mode */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* Configure NWR(RNW), RS (PD.15, PD.07) in Output Push-Pull mode */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_15;
GPIO_Init(GPIOD, &GPIO_InitStructure);
LCD_CtrlLinesWrite(GPIOD, CtrlPin_NWR, Bit_SET);
LCD_CtrlLinesWrite(GPIOD, CtrlPin_RS, Bit_SET);
}
/**
* @brief Sets or reset LCD control lines.
* @param GPIOx: where x can be B or D to select the GPIO peripheral.
* @param CtrlPins: the Control line. This parameter can be:
* @param CtrlPin_NCS: Chip Select pin (PB.02)
* @param CtrlPin_NWR: Read/Write Selection pin (PD.15)
* @param CtrlPin_RS: Register/RAM Selection pin (PD.07)
* @param BitVal: specifies the value to be written to the selected bit.
* This parameter can be:
* @param Bit_RESET: to clear the port pin
* @param Bit_SET: to set the port pin
* @retval : None
*/
void LCD_CtrlLinesWrite(GPIO_TypeDef* GPIOx, uint16_t CtrlPins, BitAction BitVal)
{
/* Set or Reset the control line */
GPIO_WriteBit(GPIOx, CtrlPins, BitVal);
}
/**
* @brief Configures the SPI2 interface.
* @param None
* @retval : None
*/
void LCD_SPIConfig(void)
{
SPI_InitTypeDef SPI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable GPIOB clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
/* Enable SPI2 clock */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
/* Configure SPI2 pins: NSS, SCK, MISO and MOSI */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
SPI_I2S_DeInit(SPI2);
/* SPI2 Config */
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
if((LCDType == LCD_ILI9320) || (LCDType == LCD_SPFD5408))
{
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
}
else if(LCDType == LCD_HX8312)
{
SPI_InitStructure.SPI_DataSize = SPI_DataSize_16b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
}
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_Init(SPI2, &SPI_InitStructure);
/* SPI2 enable */
SPI_Cmd(SPI2, ENABLE);
}
/**
* @}
*/
/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/

复制代码

ID:82014 · 发表于 2015-6-4 13:54

东西不错啊。。。

ID:82017 · 发表于 2015-6-4 14:42

嗯不错

ID:118731 · 发表于 2016-5-5 23:34

怎么没有把你的测试成果贴出来呢....我刚试了一下你的程序(只参考了相位运算的部分),也得出了结果不知道正确不正确..

ID:118731 · 发表于 2016-5-5 23:34

不过还是谢谢楼主提供了算法~~~

ID:120269 · 发表于 2016-5-12 13:00

学习了谢谢楼主

ID:139609 · 发表于 2016-9-17 11:56

感谢分享真正学习中

ID:139991 · 发表于 2016-9-21 09:23

FFT功能很强大，可以算基准频率，很好的分享。

ID:140630 · 发表于 2016-9-27 14:24

学习了，非常有用的教程，谢谢

ID:140647 · 发表于 2016-9-27 16:18

好好看看，要是有测试结果就好了

ID:93651 · 发表于 2016-11-9 19:11

还以为是F4的

ID:147443 · 发表于 2016-11-11 17:29

谢谢分享.....

ID:108095 · 发表于 2016-11-19 23:59

自己写了一个！！正用着呢！！

ID:152973 · 发表于 2016-12-7 18:54

非常感谢! 楼主好人一生平安

ID:152973 · 发表于 2016-12-7 18:55

感觉这东西好高深呀. 还得用力学.

ID:152973 · 发表于 2016-12-7 18:58

确实是好东西,一定要下载

ID:153066 · 发表于 2016-12-8 00:02

非常感谢!

ID:55881 · 发表于 2017-1-25 09:08

没积分下载不了

ID:213641 · 发表于 2017-7-29 22:18

工程文件在哪里？？找不到呢

ID:299936 · 发表于 2018-3-31 15:47

不知道能不能下载呢，多谢楼主

ID:442911 · 发表于 2019-3-15 22:07

确实是好东西

ID:268693 · 发表于 2019-6-26 22:05

我也顶一下！

ID:347811 · 发表于 2019-11-22 16:16

谢谢分享。。参考下相位的计算

ID:268151 · 发表于 2019-11-29 19:36

学习了谢谢楼主

ID:456205 · 发表于 2019-12-13 08:55

谢谢分享

学习了谢谢楼主

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STM32学习-使用dsp库的FFT函数测相位

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