From 53de825c4c4d8325c02341177f62ab84897eb5ee Mon Sep 17 00:00:00 2001
From: guowenxue <guowenxue@gmail.com>
Date: Sat, 25 Jul 2026 22:09:43 +0800
Subject: [PATCH] update vscode task.json and add stm32flash tools
---
ex2.i2c-bitbang/Core/Src/main.c | 323 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 323 insertions(+), 0 deletions(-)
diff --git a/ex2.i2c-bitbang/Core/Src/main.c b/ex2.i2c-bitbang/Core/Src/main.c
new file mode 100644
index 0000000..ec11a87
--- /dev/null
+++ b/ex2.i2c-bitbang/Core/Src/main.c
@@ -0,0 +1,323 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file : main.c
+ * @brief : Main program body
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2026 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software is licensed under terms that can be found in the LICENSE file
+ * in the root directory of this software component.
+ * If no LICENSE file comes with this software, it is provided AS-IS.
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+#include "adc.h"
+#include "tim.h"
+#include "usart.h"
+#include "gpio.h"
+
+/* Private includes ----------------------------------------------------------*/
+/* USER CODE BEGIN Includes */
+#include "miscdev.h"
+#include "sht20.h"
+#include "ds18b20.h"
+#include "isl1208.h"
+#include "oled_drv.h"
+#include "oled_font.h"
+/* USER CODE END Includes */
+
+/* Private typedef -----------------------------------------------------------*/
+/* USER CODE BEGIN PTD */
+
+/* USER CODE END PTD */
+
+/* Private define ------------------------------------------------------------*/
+/* USER CODE BEGIN PD */
+
+/* USER CODE END PD */
+
+/* Private macro -------------------------------------------------------------*/
+/* USER CODE BEGIN PM */
+
+/* USER CODE END PM */
+
+/* Private variables ---------------------------------------------------------*/
+
+/* USER CODE BEGIN PV */
+
+/* USER CODE END PV */
+
+/* Private function prototypes -----------------------------------------------*/
+void SystemClock_Config(void);
+/* USER CODE BEGIN PFP */
+
+/* USER CODE END PFP */
+
+/* Private user code ---------------------------------------------------------*/
+/* USER CODE BEGIN 0 */
+
+/**
+ * @brief OLED显示时间
+ */
+void oled_show_time(void)
+{
+ rtc_time_t tm;
+ char buf[64];
+
+ /* 获取RTC时间并保存到 buf */
+ isl1208_get_time(&tm);
+ snprintf(buf, sizeof(buf), "20%02d-%02d-%02d %02d:%02d:%02d",
+ tm.year, tm.month, tm.day,
+ tm.hour, tm.minute, tm.second);
+
+ /* 输出显示内容 OLED 屏幕上 */
+ OLED_Clear();
+ OLED_ShowString(10, OLED_PAGE2, buf, OLED_FONT8);
+ OLED_Refresh();
+
+ return;
+}
+
+void oled_show_rh(void)
+{
+ float temperature = 0.0;
+ float humidity = 0.0;
+ char buf[64];
+
+ /* 采样并输出显示内容到 buf */
+ sht20_sample_TrH(&temperature, &humidity);
+ snprintf(buf, sizeof(buf), "%.2f'C %.2f%%RH", temperature, humidity);
+
+ /* 输出显示内容 OLED 屏幕上 */
+ OLED_Clear();
+ OLED_ShowString(10, OLED_PAGE2, buf, OLED_FONT8);
+ OLED_Refresh();
+
+ return;
+}
+
+void oled_show_logo(void)
+{
+ /* 输出显示内容 OLED 屏幕上 */
+ OLED_Clear();
+ OLED_DrawBMP(0, OLED_PAGE0, BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, bmp_logo);
+ OLED_Refresh();
+
+ return;
+}
+
+/* USER CODE END 0 */
+
+/**
+ * @brief The application entry point.
+ * @retval int
+ */
+int main(void)
+{
+
+ /* USER CODE BEGIN 1 */
+ float temperature;
+ /* 各个任务的计时基准 */
+ uint32_t now = 0;
+ uint32_t last_time_tick = 0;
+ uint32_t last_rh_tick = 0;
+ uint32_t last_logo_tick = 0;
+ uint32_t display_unlock_time = 0;
+
+ /* USER CODE END 1 */
+
+ /* MCU Configuration--------------------------------------------------------*/
+
+ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
+ HAL_Init();
+
+ /* USER CODE BEGIN Init */
+
+ /* USER CODE END Init */
+
+ /* Configure the system clock */
+ SystemClock_Config();
+
+ /* USER CODE BEGIN SysInit */
+
+ /* USER CODE END SysInit */
+
+ /* Initialize all configured peripherals */
+ MX_GPIO_Init();
+ MX_USART1_UART_Init();
+ MX_ADC1_Init();
+ MX_TIM6_Init();
+ MX_TIM1_Init();
+ /* USER CODE BEGIN 2 */
+ init_led();
+ i2c_init(&i2c1_bus);
+
+ beep_start(2, 300);
+ printf("ISKBoard: I2C Bitbang Drivers Demo.\r\n");
+
+ if( sht20_init(&i2c1_bus) != 0 )
+ {
+ printf("SHT20 Sensor init failed!\r\n");
+ }
+
+ if( isl1208_init(&i2c1_bus) != 0 )
+ {
+ printf("ISL1208 RTC init failed!\r\n");
+ }
+ isl1208_set_time_str("2026-07-09 21:15:30");
+
+ if( OLED_Init(&i2c1_bus) != 0 )
+ {
+ printf("OLED display init failed!\r\n");
+ }
+
+ OLED_Clear();
+ OLED_ShowString(30, OLED_PAGE2, "ISKBoard", OLED_FONT16);
+ OLED_Refresh();
+
+ ds18b20_sample(&temperature);
+ printf("DS18B20 sample temperature: %.2f'C\r\n", temperature);
+
+ /* USER CODE END 2 */
+
+ /* Infinite loop */
+ /* USER CODE BEGIN WHILE */
+ while (1)
+ {
+ /* 获取当前系统时间 */
+ now = HAL_GetTick();
+
+ /* 心跳灯任务：不需要锁屏，始终高频调用 */
+ heartbeat_led(3);
+
+ /* 检查屏幕是否处于“锁定”状态 (正在显示温湿度或Logo) */
+ if (now >= display_unlock_time)
+ {
+ /* 优先检查是否有高优先级任务触发 (Logo -> 温湿度) */
+ uint8_t is_displaying = 0;
+
+ /* 每隔 13s 显示 Logo，持续 1s */
+ if (now - last_logo_tick >= 13000)
+ {
+ oled_show_logo(); // 执行显示
+ last_logo_tick = now; // 重置Logo计时器
+ display_unlock_time = now + 1000;
+ is_displaying = 1;
+ }
+
+ /* 如果Logo刚显示了，本轮跳过温湿度 */
+ else if (now - last_rh_tick >= 5000)
+ {
+ oled_show_rh(); // 执行显示
+ last_rh_tick = now; // 重置温湿度计时器
+ display_unlock_time = now + 2000; // 锁屏 2s
+ is_displaying = 1;
+ }
+
+ /* 如果上面都没有显示特殊内容，则显示时间 */
+ if (is_displaying == 0)
+ {
+ if (now - last_time_tick >= 1000)
+ {
+ oled_show_time(); // 执行显示
+ last_time_tick = now; // 重置时间计时器
+ }
+ }
+ }
+
+ /* USER CODE END WHILE */
+
+ /* USER CODE BEGIN 3 */
+ }
+ /* USER CODE END 3 */
+}
+
+/**
+ * @brief System Clock Configuration
+ * @retval None
+ */
+void SystemClock_Config(void)
+{
+ RCC_OscInitTypeDef RCC_OscInitStruct = {0};
+ RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
+
+ /** Configure the main internal regulator output voltage
+ */
+ if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK)
+ {
+ Error_Handler();
+ }
+
+ /** Initializes the RCC Oscillators according to the specified parameters
+ * in the RCC_OscInitTypeDef structure.
+ */
+ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+ RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+ RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+ RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+ RCC_OscInitStruct.PLL.PLLM = 1;
+ RCC_OscInitStruct.PLL.PLLN = 20;
+ RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV7;
+ RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
+ RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
+ if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
+ {
+ Error_Handler();
+ }
+
+ /** Initializes the CPU, AHB and APB buses clocks
+ */
+ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
+ |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
+ RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+ RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+ RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
+ RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
+
+ if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
+ {
+ Error_Handler();
+ }
+}
+
+/* USER CODE BEGIN 4 */
+
+/* USER CODE END 4 */
+
+/**
+ * @brief This function is executed in case of error occurrence.
+ * @retval None
+ */
+void Error_Handler(void)
+{
+ /* USER CODE BEGIN Error_Handler_Debug */
+ /* User can add his own implementation to report the HAL error return state */
+ __disable_irq();
+ while (1)
+ {
+ }
+ /* USER CODE END Error_Handler_Debug */
+}
+#ifdef USE_FULL_ASSERT
+/**
+ * @brief Reports the name of the source file and the source line number
+ * where the assert_param error has occurred.
+ * @param file: pointer to the source file name
+ * @param line: assert_param error line source number
+ * @retval None
+ */
+void assert_failed(uint8_t *file, uint32_t line)
+{
+ /* USER CODE BEGIN 6 */
+ /* User can add his own implementation to report the file name and line number,
+ ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
+ /* USER CODE END 6 */
+}
+#endif /* USE_FULL_ASSERT */
--
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