/*
 Software Uart For Stm32
 By Liyanboy74
 https://github.com/liyanboy74
*/

#define Number_Of_SoftUarts 1  // Max 8

#define SoftUartTxBufferSize 32
#define SoftUartRxBufferSize 64

#define SoftUart_DATA_LEN 8  // Max 8 Bit
#define SoftUart_PARITY 0    // 0=None 1=odd 2=even
#define SoftUart_STOP_Bit 1  // Number of stop bits

typedef enum { SoftUart_OK, SoftUart_Error } SoftUartState_E;

typedef struct {
  uint8_t Tx[SoftUartTxBufferSize];
  uint8_t Rx[SoftUartRxBufferSize];
} SoftUartBuffer_S;

typedef struct {
  __IO uint8_t TxNComplated;
  uint8_t TxEnable;
  uint8_t RxEnable;
  uint8_t TxBitShift, TxBitCounter;
  uint8_t RxBitShift, RxBitCounter;
  uint8_t TxIndex, TxSize;
  uint8_t RxIndex;
  SoftUartBuffer_S *Buffer;
  GPIO_TypeDef *TxPort;
  uint16_t TxPin;
  GPIO_TypeDef *RxPort;
  uint16_t RxPin;
  uint8_t RxTimingFlag;
  uint8_t RxBitOffset;
} SoftUart_S;

// Call Every (0.2)*(1/9600) = 20.83 uS
void SoftUartHandler(void);

void SoftUartWaitUntilTxComplate(uint8_t SoftUartNumber);
uint8_t SoftUartRxAlavailable(uint8_t SoftUartNumber);
SoftUartState_E SoftUartPuts(uint8_t SoftUartNumber, uint8_t *Data,
                             uint8_t Len);
SoftUartState_E SoftUartEnableRx(uint8_t SoftUartNumber);
SoftUartState_E SoftUartDisableRx(uint8_t SoftUartNumber);
SoftUartState_E SoftUartInit(uint8_t SoftUartNumber, GPIO_TypeDef *TxPort,
                             uint16_t TxPin, GPIO_TypeDef *RxPort,
                             uint16_t RxPin);
SoftUartState_E SoftUartReadRxBuffer(uint8_t SoftUartNumber, uint8_t *Buffer,
                                     uint8_t Len);