c7a965ed3c
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119 lines
3.5 KiB
C++
119 lines
3.5 KiB
C++
#pragma once
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#include "stm32h5xx_nucleo.h"
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#include <cstdarg>
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#include <cstdint>
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#include <cstring>
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#include <string>
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class SerialPort {
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private:
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static constexpr uint32_t kTransmitTimeout = 1000;
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static constexpr auto* kHandle = &hcom_uart[COM1];
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static inline char buffer[256] = {0};
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friend void HAL_UART_TxCpltCallback(UART_HandleTypeDef* huart);
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static inline volatile bool isTransmitting = false;
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static void WaitTransmit() {
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const auto tick = HAL_GetTick();
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while (isTransmitting) {
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if (HAL_GetTick() - tick > kTransmitTimeout) {
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HAL_UART_AbortTransmit(kHandle);
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isTransmitting = false;
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}
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}
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}
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public:
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static uint8_t ReadByte() {
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return kHandle->Instance->RDR;
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}
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static std::string ReadLine() {
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std::string result;
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result.reserve(128);
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char c;
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ReadByte();
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while (true) {
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HAL_UART_Receive(kHandle, reinterpret_cast<uint8_t*>(&c), 1, HAL_MAX_DELAY);
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if (c == '\n') {
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if (!result.empty() && result.back() == '\r') {
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result.pop_back();
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}
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break;
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}
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result.push_back(c);
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}
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return result;
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}
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static void WriteLine(const char* format, ...) {
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WaitTransmit();
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isTransmitting = true;
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va_list args;
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va_start(args, format);
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int len = vsnprintf(buffer, sizeof(buffer) - 1, format, args);
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va_end(args);
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if (len < 0 || len > static_cast<int>(sizeof(buffer) - 1)) {
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isTransmitting = false;
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return;
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}
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buffer[len] = '\n';
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len++;
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HAL_UART_Transmit_DMA(kHandle, reinterpret_cast<uint8_t*>(buffer), len);
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}
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static void WriteLineBlocking(const char* format, ...) {
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WaitTransmit();
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va_list args;
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va_start(args, format);
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int len = vsnprintf(buffer, sizeof(buffer) - 1, format, args);
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va_end(args);
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if (len < 0 || len > static_cast<int>(sizeof(buffer) - 1)) {
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return;
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}
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buffer[len] = '\n';
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len++;
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HAL_UART_Transmit(kHandle, reinterpret_cast<uint8_t*>(buffer), len, kTransmitTimeout);
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}
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static void Write(const char* format, ...) {
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WaitTransmit();
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isTransmitting = true;
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va_list args;
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va_start(args, format);
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auto len = vsnprintf(buffer, sizeof(buffer), format, args);
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va_end(args);
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if (len < 0 || len > static_cast<int>(sizeof(buffer))) {
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isTransmitting = false;
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return;
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}
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HAL_UART_Transmit_DMA(kHandle, reinterpret_cast<uint8_t*>(buffer), len);
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}
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static void WriteBlocking(const char* format, ...) {
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WaitTransmit();
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va_list args;
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va_start(args, format);
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auto len = vsnprintf(buffer, sizeof(buffer), format, args);
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va_end(args);
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if (len < 0 || len > static_cast<int>(sizeof(buffer))) {
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return;
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}
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HAL_UART_Transmit(kHandle, reinterpret_cast<uint8_t*>(buffer), strlen(buffer), kTransmitTimeout);
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}
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static void WriteBytes(const uint8_t* data, size_t size) {
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WaitTransmit();
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isTransmitting = true;
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HAL_UART_Transmit_DMA(kHandle, const_cast<uint8_t*>(data), size);
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}
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static void WriteBytesBlocking(const uint8_t* data, size_t size) {
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WaitTransmit();
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HAL_UART_Transmit(kHandle, const_cast<uint8_t*>(data), size, kTransmitTimeout);
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}
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};
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