75 lines
3.3 KiB
C
75 lines
3.3 KiB
C
#include "driverHWSPI1.h"
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SPI_HandleTypeDef driverHWSPI1Handle;
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void driverHWSPI1Init(GPIO_TypeDef* GPIOCSPort, uint16_t GPIO_CSPin) {
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driverHWSPI1Handle.Instance = SPI3;
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driverHWSPI1Handle.Init.Mode = SPI_MODE_MASTER;
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driverHWSPI1Handle.Init.Direction = SPI_DIRECTION_2LINES;
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driverHWSPI1Handle.Init.DataSize = SPI_DATASIZE_8BIT;
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driverHWSPI1Handle.Init.CLKPolarity = SPI_POLARITY_HIGH;
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//driverHWSPI1Handle.Init.CLKPhase = SPI_PHASE_1EDGE;
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driverHWSPI1Handle.Init.CLKPhase = SPI_PHASE_2EDGE;
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driverHWSPI1Handle.Init.NSS = SPI_NSS_HARD_OUTPUT;
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driverHWSPI1Handle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;
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// driverHWSPI1Handle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
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driverHWSPI1Handle.Init.FirstBit = SPI_FIRSTBIT_MSB;
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driverHWSPI1Handle.Init.TIMode = SPI_TIMODE_DISABLE;
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driverHWSPI1Handle.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
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driverHWSPI1Handle.Init.CRCPolynomial = 7;
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// driverHWSPI1Handle.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
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// driverHWSPI1Handle.Init.NSSPMode = SPI_NSS_PULSE_DISABLE;
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if (HAL_SPI_Init(&driverHWSPI1Handle) != HAL_OK)
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{
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while(true);
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}
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HAL_GPIO_WritePin(GPIOCSPort,GPIO_CSPin,GPIO_PIN_SET);
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};
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bool driverHWSPI1Write(uint8_t *writeBuffer, uint8_t noOfBytesToWrite, GPIO_TypeDef* GPIOCSPort, uint16_t GPIO_CSPin) {
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uint8_t *readBuffer; // Make fake buffer holder
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HAL_StatusTypeDef halReturnStatus; // Make holder for HAL state
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readBuffer = malloc(noOfBytesToWrite); // Make fake buffer for
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HAL_GPIO_WritePin(GPIOCSPort,GPIO_CSPin,GPIO_PIN_RESET); // Make CS low
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halReturnStatus = HAL_SPI_TransmitReceive(&driverHWSPI1Handle,writeBuffer,readBuffer,noOfBytesToWrite,driverHWSPI1DefaultTimeout); // Write desired data to slave and store the received data in readBuffer
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while( driverHWSPI1Handle.State == HAL_SPI_STATE_BUSY ); // Wait until transmission is complete
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HAL_GPIO_WritePin(GPIOCSPort,GPIO_CSPin,GPIO_PIN_SET); // Make CS High
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free(readBuffer); // Dump de fake buffer
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return (halReturnStatus == HAL_OK); // Return true if all went OK
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};
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bool driverHWSPI1WriteRead(uint8_t *writeBuffer, uint8_t noOfBytesToWrite, uint8_t *readBuffer, uint8_t noOfBytesToRead, GPIO_TypeDef* GPIOCSPort, uint16_t GPIO_CSPin) {
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uint8_t *writeArray, *readArray;
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HAL_StatusTypeDef halReturnStatus; // Make holder for HAL state
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writeArray = malloc(sizeof(uint8_t)*(noOfBytesToWrite+noOfBytesToRead));
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readArray = malloc(sizeof(uint8_t)*(noOfBytesToWrite+noOfBytesToRead));
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memset(writeArray,0xFF,noOfBytesToWrite+noOfBytesToRead);
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memcpy(writeArray,writeBuffer,noOfBytesToWrite);
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HAL_GPIO_WritePin(GPIOCSPort,GPIO_CSPin,GPIO_PIN_RESET);
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halReturnStatus = HAL_SPI_TransmitReceive(&driverHWSPI1Handle,writeArray,readArray,noOfBytesToWrite+noOfBytesToRead,driverHWSPI1DefaultTimeout);
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while( driverHWSPI1Handle.State == HAL_SPI_STATE_BUSY ); // wait xmission complete
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HAL_GPIO_WritePin(GPIOCSPort,GPIO_CSPin,GPIO_PIN_SET);
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memcpy(readBuffer,readArray+noOfBytesToWrite,noOfBytesToRead);
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free(writeArray);
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free(readArray);
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return (halReturnStatus == HAL_OK); // Return true if all went OK
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};
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