I'm trying to learn stm32cube framework :sadge:

STM32_CONTROL/platformio.ini

@@ -8,10 +8,10 @@
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
 
-[env:genericSTM32F103C6]
+[env:bluepill_f103c6]
 platform = ststm32
-board = genericSTM32F103C6
-framework = arduino
+board = bluepill_f103c6
+framework = stm32cube
 lib_deps = adafruit/DHT sensor library@^1.4.6
 debug_tool = stlink
 upload_protocol = stlink

STM32_CONTROL/src/main.cpp

@@ -0,0 +1,130 @@
+
+#include <stm32f1xx_hal.h>
+
+UART_HandleTypeDef huart1;
+
+// --- Function prototypes ---
+void SystemClock_Config(void);
+static void MX_GPIO_Init(void);
+static void MX_USART1_UART_Init(void);
+
+// --- Optional RX buffer for interrupt ---
+uint8_t rx_byte;
+
+int main(void)
+{
+    HAL_Init();
+    SystemClock_Config();
+    MX_GPIO_Init();
+    MX_USART1_UART_Init();
+
+    char msg[] = "UART started at 38400 baud\r\n";
+
+    // Send a startup message
+    HAL_UART_Transmit(&huart1, (uint8_t*)msg, sizeof(msg)-1, HAL_MAX_DELAY);
+
+    // Start interrupt-based receive of one byte
+    HAL_UART_Receive_IT(&huart1, &rx_byte, 1);
+
+    while (1)
+    {
+        // Send a heartbeat message every second
+        char heartbeat[] = "Ping\r\n";
+        HAL_UART_Transmit(&huart1, (uint8_t*)heartbeat, sizeof(heartbeat)-1, HAL_MAX_DELAY);
+
+        HAL_Delay(1000);
+    }
+}
+
+// -----------------------------------------------------------------------------
+// Error handler
+// -----------------------------------------------------------------------------
+void Error_Handler(void)
+{
+    while (1) { }
+}
+
+
+// -----------------------------------------------------------------------------
+// UART1 initialization (38400 baud)
+// -----------------------------------------------------------------------------
+static void MX_USART1_UART_Init(void)
+{
+    huart1.Instance = USART1;
+    huart1.Init.BaudRate = 38400;
+    huart1.Init.WordLength = UART_WORDLENGTH_8B;
+    huart1.Init.StopBits = UART_STOPBITS_1;
+    huart1.Init.Parity = UART_PARITY_NONE;
+    huart1.Init.Mode = UART_MODE_TX_RX;
+    huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
+    huart1.Init.OverSampling = UART_OVERSAMPLING_16;
+
+    if (HAL_UART_Init(&huart1) != HAL_OK)
+    {
+        Error_Handler();
+    }
+}
+
+// -----------------------------------------------------------------------------
+// GPIO for UART1 pins (PA9 TX, PA10 RX)
+// -----------------------------------------------------------------------------
+static void MX_GPIO_Init(void)
+{
+    __HAL_RCC_GPIOA_CLK_ENABLE();
+
+    GPIO_InitTypeDef GPIO_InitStruct = {0};
+
+    // PA9 -> USART1_TX (Alternate Function Push-Pull)
+    GPIO_InitStruct.Pin = GPIO_PIN_9;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
+    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+    // PA10 -> USART1_RX (Input)
+    GPIO_InitStruct.Pin = GPIO_PIN_10;
+    GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+}
+
+// -----------------------------------------------------------------------------
+// Interrupt callback for UART receive
+// -----------------------------------------------------------------------------
+void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
+{
+    if (huart->Instance == USART1) {
+
+        // Echo received byte back
+        HAL_UART_Transmit(&huart1, &rx_byte, 1, HAL_MAX_DELAY);
+
+        // Re-enable reception of next byte
+        HAL_UART_Receive_IT(&huart1, &rx_byte, 1);
+    }
+}
+
+// -----------------------------------------------------------------------------
+// Basic system clock (HSE not required for 38400 UART)
+// -----------------------------------------------------------------------------
+void SystemClock_Config(void)
+{
+    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
+    RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
+
+    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
+    RCC_OscInitStruct.HSIState = RCC_HSI_ON;
+    RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
+    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
+    HAL_RCC_OscConfig(&RCC_OscInitStruct);
+
+    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK |
+                                  RCC_CLOCKTYPE_SYSCLK |
+                                  RCC_CLOCKTYPE_PCLK1 |
+                                  RCC_CLOCKTYPE_PCLK2;
+
+    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
+    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
+    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
+    HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0);
+}
+

STM32_CONTROL/src/test.cpp

@@ -1,22 +0,0 @@
-#include <Arduino.h>
-
-
-// UART2 (PA3 = RX, PA2 = TX)
-HardwareSerial mdSerial(PA10, PA9);
-// HardwareSerial sigma(PA9, )
-
-
-
-void setup() {
-
-  mdSerial.begin(38400);
-
-
-
-}
-
-void loop() {
-  mdSerial.write("skibidi");
-
-  delay(5000); // wait before next loop
-}

STM32_CONTROL/tmp/test.cpp

@@ -0,0 +1,24 @@
+// #include <Arduino.h>
+#include <stm32f1xx_hal.h>
+#define PIN_SERIAL3_RX PB11
+#define PIN_SERIAL3_TX PB10
+
+// UART2 (PA3 = RX, PA2 = TX)
+HardwareSerial Serial1(PA10, PA9);
+// HardwareSerial sigma(PA9, )
+
+
+
+void setup() {
+
+  Serial1.begin(38400);
+
+
+
+}
+
+void loop() {
+  Serial1.write("skibidi");
+
+  delay(5000); // wait before next loop
+}