54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
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/*
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Software Uart For Stm32
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By Liyanboy74
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https://github.com/liyanboy74
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*/
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#define Number_Of_SoftUarts 1 // Max 8
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#define SoftUartTxBufferSize 32
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#define SoftUartRxBufferSize 64
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#define SoftUart_DATA_LEN 8 // Max 8 Bit
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#define SoftUart_PARITY 0 // 0=None 1=odd 2=even
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#define SoftUart_STOP_Bit 1 // Number of stop bits
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typedef enum { SoftUart_OK, SoftUart_Error } SoftUartState_E;
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typedef struct {
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uint8_t Tx[SoftUartTxBufferSize];
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uint8_t Rx[SoftUartRxBufferSize];
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} SoftUartBuffer_S;
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typedef struct {
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__IO uint8_t TxNComplated;
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uint8_t TxEnable;
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uint8_t RxEnable;
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uint8_t TxBitShift, TxBitCounter;
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uint8_t RxBitShift, RxBitCounter;
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uint8_t TxIndex, TxSize;
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uint8_t RxIndex;
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SoftUartBuffer_S *Buffer;
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GPIO_TypeDef *TxPort;
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uint16_t TxPin;
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GPIO_TypeDef *RxPort;
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uint16_t RxPin;
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uint8_t RxTimingFlag;
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uint8_t RxBitOffset;
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} SoftUart_S;
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// Call Every (0.2)*(1/9600) = 20.83 uS
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void SoftUartHandler(void);
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void SoftUartWaitUntilTxComplate(uint8_t SoftUartNumber);
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uint8_t SoftUartRxAlavailable(uint8_t SoftUartNumber);
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SoftUartState_E SoftUartPuts(uint8_t SoftUartNumber, uint8_t *Data,
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uint8_t Len);
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SoftUartState_E SoftUartEnableRx(uint8_t SoftUartNumber);
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SoftUartState_E SoftUartDisableRx(uint8_t SoftUartNumber);
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SoftUartState_E SoftUartInit(uint8_t SoftUartNumber, GPIO_TypeDef *TxPort,
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uint16_t TxPin, GPIO_TypeDef *RxPort,
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uint16_t RxPin);
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SoftUartState_E SoftUartReadRxBuffer(uint8_t SoftUartNumber, uint8_t *Buffer,
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uint8_t Len);
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