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Bug fix - Uart stucked after canceling a receive operation #9

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Bug fix - Uart stucked after canceling a receive operation #9

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4 changes: 4 additions & 0 deletions Src/main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -236,6 +236,10 @@ static void MX_GPIO_Init(void)

/* USER CODE BEGIN 4 */

void uart_clear_overrun_flag (void){
huart1.Instance->ICR |= (1 << 3);
}

/* USER CODE END 4 */

/**
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6 changes: 6 additions & 0 deletions Src/xmodem.c
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Expand Up @@ -19,6 +19,9 @@ static uint16_t xmodem_calc_crc(uint8_t *data, uint16_t length);
static xmodem_status xmodem_handle_packet(uint8_t size);
static xmodem_status xmodem_error_handler(uint8_t *error_number, uint8_t max_error_number);

/* externs */
extern void uart_clear_overrun_flag (void);

/**
* @brief This function is the base of the Xmodem protocol.
* When we receive a header from UART, it decides what action it shall take.
Expand Down Expand Up @@ -102,6 +105,9 @@ void xmodem_receive(void)
}
break;
}

/*Prevent an overrun error after stop/cancel in the middle of a pack transference*/
uart_clear_overrun_flag();
}
}

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