IR-Remote code STM32 - - Powered by Discuz!

/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "dwt_stm32_delay.h"
#include "i2c-lcd.h"
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
I2C_HandleTypeDef hi2c1;
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_I2C1_Init(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
uint32_t data;
uint8_t count;
uint32_t receive_data (void)
{
uint32_t code=0;
/* The START Sequence begin here
* there will be a pulse of 9ms LOW and
* than 4.5 ms space (HIGH)
*/
while (!(HAL_GPIO_ReadPin (GPIOA, GPIO_PIN_1))); // wait for the pin to go high.. 9ms LOW
while ((HAL_GPIO_ReadPin (GPIOA, GPIO_PIN_1))); // wait for the pin to go low.. 4.5ms HIGH
/* START of FRAME ends here*/
/* DATA Reception
* We are only going to check the SPACE after 562.5us pulse
* if the space is 562.5us, the bit indicates '0'
* if the space is around 1.6ms, the bit is '1'
*/
for (int i=0; i<32; i++)
{
count=0;
while (!(HAL_GPIO_ReadPin (GPIOA, GPIO_PIN_1))); // wait for pin to go high.. this is 562.5us LOW
while ((HAL_GPIO_ReadPin (GPIOA, GPIO_PIN_1))) // count the space length while the pin is high
{
count++;
DWT_Delay_us(100);
}
if (count > 12) // if the space is more than 1.2 ms
{
code |= (1UL << (31-i)); // write 1
}
else code &= ~(1UL << (31-i)); // write 0
}
return code;
}
void convert_code (uint32_t code)
{
switch (code)
{
case (0xFFA25D):
lcd_send_cmd (0x86);
lcd_send_data ('1');
break;
case (0xFF629D):
lcd_send_cmd (0x86);
lcd_send_data ('2');
break;
case (0xFFE21D):
lcd_send_cmd (0x86);
lcd_send_data ('3');
break;
case (0xFF22DD):
lcd_send_cmd (0x86);
lcd_send_data ('4');
break;
case (0xFF02FD):
lcd_send_cmd (0x86);
lcd_send_data ('5');
break;
case (0xFFC23D):
lcd_send_cmd (0x86);
lcd_send_data ('6');
break;
case (0xFFE01F):
lcd_send_cmd (0x86);
lcd_send_data ('7');
break;
case (0xFFA857):
lcd_send_cmd (0x86);
lcd_send_data ('8');
break;
case (0xFF906F):
lcd_send_cmd (0x86);
lcd_send_data ('9');
break;
case (0xFFB04F):
lcd_send_cmd (0x86);
lcd_send_data ('#');
break;
case (0XFF6897):
lcd_send_cmd (0x86);
lcd_send_data ('*');
break;
case (0xFF9867):
lcd_send_cmd (0x86);
lcd_send_data ('0');
break;
case (0xFF38C7):
lcd_send_cmd (0x86);
lcd_send_data ('K');
break;
case (0xFF18E7):
lcd_send_cmd (0x86);
lcd_send_data ('^');
break;
case (0xFF10EF):
lcd_send_cmd (0x86);
lcd_send_data ('<');
break;
case (0xFF5AA5):
lcd_send_cmd (0x86);
lcd_send_data ('>');
break;
case (0xFF4AB5):
lcd_send_cmd (0x86);
lcd_send_data ('u');
break;
default :
break;
}
}
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* 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_I2C1_Init();
/* USER CODE BEGIN 2 */
DWT_Delay_Init ();
lcd_init ();
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
while (HAL_GPIO_ReadPin (GPIOA, GPIO_PIN_1)); // wait for the pin to go low
data = receive_data ();
convert_code (data);
HAL_Delay (200);
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/**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();
}
/**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();
}
}
/**
* @brief I2C1 Initialization Function
* @param None
* @retval None
*/
static void MX_I2C1_Init(void)
{
/* USER CODE BEGIN I2C1_Init 0 */
/* USER CODE END I2C1_Init 0 */
/* USER CODE BEGIN I2C1_Init 1 */
/* USER CODE END I2C1_Init 1 */
hi2c1.Instance = I2C1;
hi2c1.Init.ClockSpeed = 100000;
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();
}
/* USER CODE BEGIN I2C1_Init 2 */
/* USER CODE END I2C1_Init 2 */
}
/**
* @brief GPIO Initialization Function
* @param None
* @retval None
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOD_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/*Configure GPIO pin : PA1 */
GPIO_InitStruct.Pin = GPIO_PIN_1;
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