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/* ... */
#include "main.h"
/* ... */
/* ... */
/* ... */
Includes
#define SPI_ACK_BYTES 0xA5A5
#define SPI_NACK_BYTES 0xDEAD
#define SPI_TIMEOUT_MAX 0x1000
#define SPI_SLAVE_SYNBYTE 0x53
#define SPI_MASTER_SYNBYTE 0xAC
#define ADDRCMD_MASTER_READ ((uint16_t)0x1234)
#define ADDRCMD_MASTER_WRITE ((uint16_t)0x5678)
#define CMD_LENGTH ((uint16_t)0x0004)
#define DATA_LENGTH ((uint16_t)0x0020)
9 definesPrivate define
SPI_HandleTypeDef SpiHandle;
FlagStatus TestReady = RESET;
uint8_t aTxMasterBuffer[] = "SPI - MASTER - Transmit message";
uint8_t aTxSlaveBuffer[] = "SPI - SLAVE - Transmit message ";
uint8_t aRxBuffer[DATA_LENGTH];
Private variables
static void Master_Synchro(void);
static void SystemClock_Config(void);
static void Error_Handler(void);
static uint16_t Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength);
static void Flush_Buffer(uint8_t* pBuffer, uint16_t BufferLength);
Private function prototypes
/* ... */
int main(void)
{
uint8_t addrcmd[CMD_LENGTH] = {0};
uint16_t ackbytes = 0x0000;
/* ... */
HAL_Init();
SystemClock_Config();
BSP_LED_Init(LED3);
BSP_LED_Init(LED4);
BSP_LED_Init(LED5);
BSP_LED_Init(LED6);
SpiHandle.Instance = SPIx;
SpiHandle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_64;
SpiHandle.Init.Direction = SPI_DIRECTION_2LINES;
SpiHandle.Init.CLKPhase = SPI_PHASE_2EDGE;
SpiHandle.Init.CLKPolarity = SPI_POLARITY_LOW;
SpiHandle.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
SpiHandle.Init.CRCPolynomial = 7;
SpiHandle.Init.DataSize = SPI_DATASIZE_8BIT;
SpiHandle.Init.FirstBit = SPI_FIRSTBIT_MSB;
SpiHandle.Init.NSS = SPI_NSS_SOFT;
SpiHandle.Init.TIMode = SPI_TIMODE_DISABLE;
SpiHandle.Init.Mode = SPI_MODE_MASTER;
if(HAL_SPI_Init(&SpiHandle) != HAL_OK)
{
Error_Handler();
}if (HAL_SPI_Init(&SpiHandle) != HAL_OK) { ... }
BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_EXTI);
while(TestReady != SET)
{
BSP_LED_Toggle(LED3);
HAL_Delay(40);
}while (TestReady != SET) { ... }
BSP_LED_Off(LED3);
while(1)
{
Master_Synchro();
addrcmd[0] = (uint8_t) (ADDRCMD_MASTER_READ >> 8);
addrcmd[1] = (uint8_t) ADDRCMD_MASTER_READ;
addrcmd[2] = (uint8_t) (DATA_LENGTH >> 8);
addrcmd[3] = (uint8_t) DATA_LENGTH;
if(HAL_SPI_Transmit_IT(&SpiHandle, addrcmd, CMD_LENGTH) != HAL_OK)
{
Error_Handler();
}if (HAL_SPI_Transmit_IT(&SpiHandle, addrcmd, CMD_LENGTH) != HAL_OK) { ... }
/* ... */
while(HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_READY)
{}while (HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_READY) { ... }
Master_Synchro();
ackbytes = 0;
if(HAL_SPI_Receive_IT(&SpiHandle, (uint8_t *)&ackbytes, sizeof(ackbytes)) != HAL_OK)
{
Error_Handler();
}if (HAL_SPI_Receive_IT(&SpiHandle, (uint8_t *)&ackbytes, sizeof(ackbytes)) != HAL_OK) { ... }
while(HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_READY)
{}while (HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_READY) { ... }
if(ackbytes == SPI_ACK_BYTES)
{
Master_Synchro();
if(HAL_SPI_Receive_IT(&SpiHandle, aRxBuffer, DATA_LENGTH) != HAL_OK)
{
Error_Handler();
}if (HAL_SPI_Receive_IT(&SpiHandle, aRxBuffer, DATA_LENGTH) != HAL_OK) { ... }
while(HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_READY)
{}while (HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_READY) { ... }
Master_Synchro();
ackbytes = SPI_ACK_BYTES;
if(HAL_SPI_Transmit_IT(&SpiHandle, (uint8_t *)&ackbytes, sizeof(ackbytes)) != HAL_OK)
{
Error_Handler();
}if (HAL_SPI_Transmit_IT(&SpiHandle, (uint8_t *)&ackbytes, sizeof(ackbytes)) != HAL_OK) { ... }
while(HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_READY)
{}while (HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_READY) { ... }
}if (ackbytes == SPI_ACK_BYTES) { ... }
else
{
Error_Handler();
}else { ... }
if(Buffercmp((uint8_t*)aTxSlaveBuffer, (uint8_t*)aRxBuffer, CMD_LENGTH))
{
Error_Handler();
}if (Buffercmp((uint8_t*)aTxSlaveBuffer, (uint8_t*)aRxBuffer, CMD_LENGTH)) { ... }
else
{
BSP_LED_Toggle(LED6);
}else { ... }
Master_Synchro();
addrcmd[0] = (uint8_t) (ADDRCMD_MASTER_WRITE >> 8);
addrcmd[1] = (uint8_t) ADDRCMD_MASTER_WRITE;
addrcmd[2] = (uint8_t) (DATA_LENGTH >> 8);
addrcmd[3] = (uint8_t) DATA_LENGTH;
if(HAL_SPI_Transmit_IT(&SpiHandle, addrcmd, CMD_LENGTH) != HAL_OK)
{
Error_Handler();
}if (HAL_SPI_Transmit_IT(&SpiHandle, addrcmd, CMD_LENGTH) != HAL_OK) { ... }
while(HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_READY)
{}while (HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_READY) { ... }
Master_Synchro();
ackbytes = 0;
if(HAL_SPI_Receive_IT(&SpiHandle, (uint8_t *)&ackbytes, sizeof(ackbytes)) != HAL_OK)
{
Error_Handler();
}if (HAL_SPI_Receive_IT(&SpiHandle, (uint8_t *)&ackbytes, sizeof(ackbytes)) != HAL_OK) { ... }
while(HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_READY)
{}while (HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_READY) { ... }
if(ackbytes == SPI_ACK_BYTES)
{
Master_Synchro();
if(HAL_SPI_Transmit_IT(&SpiHandle, aTxMasterBuffer, DATA_LENGTH) != HAL_OK)
{
Error_Handler();
}if (HAL_SPI_Transmit_IT(&SpiHandle, aTxMasterBuffer, DATA_LENGTH) != HAL_OK) { ... }
while(HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_READY)
{}while (HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_READY) { ... }
Master_Synchro();
ackbytes = 0;
if(HAL_SPI_Receive_IT(&SpiHandle, (uint8_t *)&ackbytes, sizeof(ackbytes)) != HAL_OK)
{
Error_Handler();
}if (HAL_SPI_Receive_IT(&SpiHandle, (uint8_t *)&ackbytes, sizeof(ackbytes)) != HAL_OK) { ... }
while(HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_READY)
{}while (HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_READY) { ... }
}if (ackbytes == SPI_ACK_BYTES) { ... }
else
{
Error_Handler();
}else { ... }
Flush_Buffer(aRxBuffer, DATA_LENGTH);
BSP_LED_Toggle(LED4);
HAL_Delay(100);
}while (1) { ... }
}{ ... }
/* ... */
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
if(KEY_BUTTON_PIN == GPIO_Pin)
{
TestReady = SET;
}if (KEY_BUTTON_PIN == GPIO_Pin) { ... }
}{ ... }
/* ... */
static void Master_Synchro(void)
{
uint8_t txackbytes = SPI_MASTER_SYNBYTE, rxackbytes = 0x00;
do
{
if(HAL_SPI_TransmitReceive_IT(&SpiHandle, (uint8_t *)&txackbytes, (uint8_t *)&rxackbytes, 1) != HAL_OK)
{
Error_Handler();
}if (HAL_SPI_TransmitReceive_IT(&SpiHandle, (uint8_t *)&txackbytes, (uint8_t *)&rxackbytes, 1) != HAL_OK) { ... }
while(HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_READY)
{}while (HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_READY) { ... }
...}while(rxackbytes != SPI_SLAVE_SYNBYTE);
}{ ... }
/* ... */
void HAL_SPI_ErrorCallback(SPI_HandleTypeDef *hspi)
{
Error_Handler();
}{ ... }
/* ... */
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
__HAL_RCC_PWR_CLK_ENABLE();
/* ... */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 8;
RCC_OscInitStruct.PLL.PLLN = 336;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
HAL_RCC_OscConfig(&RCC_OscInitStruct);
/* ... */
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
if (HAL_GetREVID() >= 0x1001)
{
__HAL_FLASH_PREFETCH_BUFFER_ENABLE();
}if (HAL_GetREVID() >= 0x1001) { ... }
}{ ... }
/* ... */
static void Error_Handler(void)
{
BSP_LED_On(LED5);
while(1)
{
}while (1) { ... }
}{ ... }
/* ... */
static uint16_t Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength)
{
while (BufferLength--)
{
if((*pBuffer1) != *pBuffer2)
{
return BufferLength;
}if ((*pBuffer1) != *pBuffer2) { ... }
pBuffer1++;
pBuffer2++;
}while (BufferLength--) { ... }
return 0;
}{ ... }
/* ... */
static void Flush_Buffer(uint8_t* pBuffer, uint16_t BufferLength)
{
while (BufferLength--)
{
*pBuffer = 0;
pBuffer++;
}while (BufferLength--) { ... }
}{ ... }
#ifdef USE_FULL_ASSERT
/* ... */
void assert_failed(uint8_t* file, uint32_t line)
{
/* ... */
while (1)
{
}while (1) { ... }
}assert_failed (uint8_t* file, uint32_t line) { ... }
/* ... */#endif
/* ... */
/* ... */
/* ... */