6针脚OLED怎么驱动,帮我写stm32f103c8t6的标准库函数
时间: 2024-09-08 18:03:15 浏览: 71
6针脚OLED(通常是指128x64尺寸的单色OLED显示屏)一般通过SPI(Serial Peripheral Interface)接口进行数据传输,因为SPI支持全双工通信,可以方便地控制屏幕的每个像素。STM32F103C8T6是一款基于ARM Cortex-M3的微控制器,其内置了SPI功能,可以轻松驱动OLED。
以下是一个基本的例子,展示了如何使用STM32F103C8T6的HAL库(Hardware Abstraction Layer,硬件抽象层)来初始化SPI并驱动OLED:
```c
#include "stm32f10x_hal.h"
#include "stm32f1xx_hal Spi.h"
// OLED配置信息
static OLED_HandleTypeDef hOled;
void OLED_Init(void) {
hOled.Instance = SPI2; //假设SPI2口连接到OLED
hOled.Init.Mode = HAL_SPI_MODE_MASTER;
hOled.Init.Direction = SPI_DIRECTION_2LINES;
hOled.Init.DataOrder = SPI_DATAORDER_MSBFIRST;
hOled.Init.CLKPolarity = SPI_POLARITY_LOW;
hOled.Init.CLKPhase = SPI_PHASE_1EDGE;
hOled.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hOled.Init.NSS = SPI_NSS_SOFT;
hOled.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
hOled.Init.FirstBit = SPI_FIRSTBIT_MSB;
hOled.Init.TIMode = SPI_TIMODE_DISABLE;
hOled.Init.CRCPolynomial = 7;
if (HAL Spi_Init(&hOled) != HAL_OK) {
// 初始化失败处理
while (1);
}
}
void OLED_WriteCommand(uint8_t cmd) {
uint8_t data[2] = {cmd, 0}; // OLED命令通常不需要数据
HAL Spi_TransmitReceive(&hOled, &data[0], &data[0], 1, HAL_MAX_DELAY); // 发送命令
}
void OLED_WriteData(uint8_t data) {
uint8_t buffer[] = {data};
HAL Spi_TransmitReceive(&hOled, &buffer[0], &buffer[0], 1, HAL_MAX_DELAY); // 发送数据
}
// 使用示例
void OLED_ClearScreen() {
OLED_WriteCommand(0x12); // 清屏命令
OLED_WriteData(0x00);
delay_ms(5); // 等待命令执行
}
// ... 其他操作函数
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