FDC2214的STM32测试源代码(软件IIC版本) -

/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32f1xx_hal.h"
/* USER CODE BEGIN Includes */
/*!
* @file main.c
* @brief FDC2214测试代码 STM32 软件IIC
*
+--------------------------------------------+
| |33
| |
| SCL +------------------> PB10 |
| |
| FDC2214 STM32 |
| SDA +------------------> PB11 |
| |
| |
| 3.3 +------------------> 3.3 |
| |
| |
| SD +------------------> GND |
| |
| |
| GND +------------------> GND |
| |
+--------------------------------------------+
程序基于
硬件 STM32F103ZET6
软件 HAL库，STM32CubeMX生成
使用软件IIC，FDC2214文件有详细注释。
自己焊的芯片如果读不出数据：
请检查：
1、SCL SDA是否接反
2、SD是否接地
3、芯片地址是否选择为0x2A（根据硬件短接选择）
4、检查晶振是否起振，示波器观察是否有40m Hz稳定正弦信号
其他问题可以在群内留言.
*/
/*
FDC2214 STM32驱动例程
软件IIC使用 P10 -> SCL PB11-> SDA 寄存器操作，可修改IO口
*/
#include "FDC2214.h"
#include "MyIIC.h"
#include "string.h"
#if 1
#pragma import(__use_no_semihosting)
//Standard library required support function
struct __FILE
{
int handle;
};
FILE __stdout;
// define _sys_exit()
void _sys_exit(int x)
{
x = x;
}
//redifine fputc()
int fputc(int ch, FILE *f)
{
while((USART1->SR&0X40)==0);//Loop send
USART1->DR = (unsigned char ) ch;
return ch;
}
#endif
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/
I2C_HandleTypeDef hi2c1;
UART_HandleTypeDef huart1;
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART1_UART_Init(void);
static void MX_I2C1_Init(void);
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
unsigned char string[] = "OK";
unsigned char buf[3];
uint32_t date0, date1, date2, date3;
uint16_t deviceID1 = 0;
/* USER CODE END PFP */
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
*
* @retval None
*/
int main(void)
{
/* USER CODE BEGIN 1 */
uint16_t data;
/* USER CODE END 1 */
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_USART1_UART_Init();
MX_I2C1_Init();
/* USER CODE BEGIN 2 */
FDC2214_Init();
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
FDC2214_GetChannelData(FDC2214_Channel_0, &date0); //获取各个通道数据
FDC2214_GetChannelData(FDC2214_Channel_1, &date1);
FDC2214_GetChannelData(FDC2214_Channel_2, &date2);
FDC2214_GetChannelData(FDC2214_Channel_3, &date3);
printf("%d,%d,%d,%d\n",date0,date1,date2,date3);
HAL_Delay(10);
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct;
/**Initializes the CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Initializes the CPU, AHB and APB busses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Configure the Systick interrupt time
*/
HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
/**Configure the Systick
*/
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
/* SysTick_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}
/* I2C1 init function */
static void MX_I2C1_Init(void)
{
hi2c1.Instance = I2C1;
hi2c1.Init.ClockSpeed = 400000;
hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
hi2c1.Init.OwnAddress1 = 0;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(&hi2c1) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
}
/* USART1 init function */
static void MX_USART1_UART_Init(void)
{
huart1.Instance = USART1;
huart1.Init.BaudRate = 115200;
huart1.Init.WordLength = UART_WORDLENGTH_8B;
huart1.Init.StopBits = UART_STOPBITS_1;
huart1.Init.Parity = UART_PARITY_NONE;
huart1.Init.Mode = UART_MODE_TX_RX;
huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart1.Init.OverSampling = UART_OVERSAMPLING_16;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
}
/** Configure pins as
* Analog
* Input
* Output
* EVENT_OUT
* EXTI
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOB_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOB, I2C_SCL_Pin|I2C_SDA_Pin, GPIO_PIN_RESET);
/*Configure GPIO pins : I2C_SCL_Pin I2C_SDA_Pin */
GPIO_InitStruct.Pin = I2C_SCL_Pin|I2C_SDA_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
}
/* USER CODE BEGIN 4 */
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @param file: The file name as string.
* @param line: The line in file as a number.
* @retval None
*/
void _Error_Handler(char *file, int line)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
while(1)
{
}
/* USER CODE END Error_Handler_Debug */
}
#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 CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

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#ifndef __FDC2214_H
#define __FDC2214_H
#include "sys.h"
//IO方向设置
#define FDC_SDA_IN() {GPIOC->CRL&=0XFF0FFFFF;GPIOC->CRL|=8<<4*5;}
#define FDC_SDA_OUT() {GPIOC->CRL&=0XFF0FFFFF;GPIOC->CRL|=3<<4*5;}
//IO操作函数
#define FDC_IIC_SCL PCout(4) //SCL
#define FDC_IIC_SDA PCout(5) //输出SDA
#define FDC_READ_SDA PCin(5) //输入SDA
/*FDC2214 iic从地址
*ADDR = L , I2C Address = 0x2A
*ADDR = H , I2C Address = 0x2B*/
#define FDC2214_ADDR 0x2A
/*FDC2214各个寄存器地址*/
#define DATA_CH0 0x00 //数据寄存器
#define DATA_LSB_CH0 0x01
#define DATA_CH1 0x02
#define DATA_LSB_CH1 0x03
#define DATA_CH2 0x04
#define DATA_LSB_CH2 0x05
#define DATA_CH3 0x06
#define DATA_LSB_CH3 0x07
#define RCOUNT_CH0 0x08 //
#define RCOUNT_CH1 0x09
#define RCOUNT_CH2 0x0A
#define RCOUNT_CH3 0x0B
//#define OFFSET_CH0 0x0C //FDC2114
//#define OFFSET_CH1 0x0D
//#define OFFSET_CH2 0x0E
//#define OFFSET_CH3 0x0F
#define SETTLECOUNT_CH0 0x10
#define SETTLECOUNT_CH1 0x11
#define SETTLECOUNT_CH2 0x12
#define SETTLECOUNT_CH3 0x13
#define CLOCK_DIVIDERS_C_CH0 0x14 //时钟分频
#define CLOCK_DIVIDERS_C_CH1 0x15
#define CLOCK_DIVIDERS_C_CH2 0x16
#define CLOCK_DIVIDERS_C_CH3 0x17
#define STATUS 0x18 //状态寄存器
#define ERROR_CONFIG 0x19 //错误报告设置
#define CONFIG 0x1A
#define MUX_CONFIG 0x1B
#define RESET_DEV 0x1C
#define DRIVE_CURRENT_CH0 0x1E //电流驱动
#define DRIVE_CURRENT_CH1 0x1F
#define DRIVE_CURRENT_CH2 0x20
#define DRIVE_CURRENT_CH3 0x21
#define MANUFACTURER_ID 0x7E //读取值：0x5449
#define DEVICE_ID 0x7F //读取值：0x3055
//extern u16 Data_FDC;
//相关函数申明
u8 Set_FDC2214(u8 reg,u8 MSB,u8 LSB);
u16 FDC_Read(u8 reg);
//u16 FCD2214_ReadCH(u8 index);
u32 FCD2214_ReadCH(u8 index);
u8 FDC2214_Init(void);
float Cap_Calculate(u8 index);
#endif

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