#include "UartReader.h"

extern UART_HandleTypeDef huart1;
static UartReader* volatile _uartReader = nullptr;

UartReader::UartReader(){
    _uartReader = this;
}

void UartReader::start(LineCallback lineCallback) {
    _lineCallback = lineCallback;
    HAL_UART_Receive_IT(&huart1, _writeBuffer, 1);
}

void UartReader::onDataRx(){
    if(_writeBuffer[_rxSize] == '\r'){
        _writeBuffer[_rxSize] = 0;
        auto tmp = _writeBuffer;
        _writeBuffer = _readBuffer;
        _readBuffer = tmp;
        auto lineSize = _rxSize;
        _rxSize = 0;
        _lineCallback(reinterpret_cast<const char*>(_readBuffer), lineSize);
        HAL_UART_Receive_IT(&huart1, &_writeBuffer[_rxSize], 1); 
    }else{
        _rxSize++;
        HAL_UART_Receive_IT(&huart1, &_writeBuffer[_rxSize], 1); 
    }
}

extern "C" void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) {
    if(huart == &huart1) {
        _uartReader->onDataRx();
    }
}