本帖最后由 forgot 于 2023-2-14 10:13 编辑
评测实现功能： 1、开机液晶显示相关信息： "Hello Geehy" "APM32F107_MINI" "USART_2_OLED"
2、可通过PC端串口发送数据到串口2，通过空闲中断判断完整帧，然后将接收到的完整帧数据显示在0.96寸的OLED液晶屏上。 "USART2_REV:xxxxx"，具体内容看图片。
3、接收数据过程中LED闪烁。
开机效果：
串口接收显示效果：
外设使用情况： PE6 推挽输出点灯 PA4、PA6模拟I2C时序 USART2：接收中断与空闲中断PA2、PA3
相关图片： 整体环境搭建
开机显示：
串口发送：
串口接收显示： 主要部分代码说明： USART初始化代码： - void USART_Configuration(void)
- {
- USART_Config_T USART_ConfigStruct;
- APM_MINI_LEDInit(LED2);
- RCM_EnableAPB2PeriphClock((RCM_APB2_PERIPH_T)(RCM_APB2_PERIPH_GPIOA | RCM_APB2_PERIPH_USART1));
- RCM_EnableAPB1PeriphClock(RCM_APB1_PERIPH_USART2);
- USART_ConfigStruct.baudRate = 115200;
- USART_ConfigStruct.hardwareFlow = USART_HARDWARE_FLOW_NONE;
- USART_ConfigStruct.mode = USART_MODE_TX_RX;
- USART_ConfigStruct.parity = USART_PARITY_NONE;
- USART_ConfigStruct.stopBits = USART_STOP_BIT_1;
- USART_ConfigStruct.wordLength = USART_WORD_LEN_8B;
- // APM_MINI_COMInit(COM1, &USART_ConfigStruct);
- APM_MINI_COMInit(COM2, &USART_ConfigStruct);
- // USART_EnableInterrupt(USART1, USART_INT_TXBE);
- USART_EnableInterrupt(USART2, USART_INT_RXBNE);
- USART_EnableInterrupt(USART2,USART_INT_IDLE);
- // NVIC_EnableIRQRequest(USART1_IRQn, 2, 0);
- NVIC_EnableIRQRequest(USART2_IRQn, 1, 0);
- }
模拟I2C初始化代码： - void IIC_Start()
- {
- OLED_SCLK_Set();
- OLED_SDIN_Set();
- MY_Delay(1);
- OLED_SDIN_Clr();
- MY_Delay(1);
- OLED_SCLK_Clr();
- MY_Delay(1);
- }
- void IIC_Stop()
- {
- OLED_SCLK_Set();
- MY_Delay(1);
- OLED_SDIN_Clr();
- MY_Delay(1);
- OLED_SDIN_Set();
- MY_Delay(1);
- }
- void IIC_Wait_Ack()
- {
- OLED_SCLK_Set();
- MY_Delay(1);
- OLED_SCLK_Clr();
- MY_Delay(1);
- }
- void Write_IIC_Byte(unsigned char IIC_Byte)
- {
- unsigned char i;
- unsigned char m,da;
- da=IIC_Byte;
- OLED_SCLK_Clr();
- MY_Delay(1);
- for(i=0; i<8; i++) {
- m=da;
- m=m&0x80;
- if(m==0x80) {
- OLED_SDIN_Set();
- } else
- OLED_SDIN_Clr();
- MY_Delay(1);
- da=da<<1;
- OLED_SCLK_Set();
- MY_Delay(1);
- OLED_SCLK_Clr();
- MY_Delay(1);
- }
- }
- /*************************************************/
- void Write_IIC_Command(unsigned char IIC_Command)
- {
- IIC_Start();
- Write_IIC_Byte(0x78);//Slave address,SA0=0
- IIC_Wait_Ack();
- Write_IIC_Byte(0x00);//write command
- IIC_Wait_Ack();
- Write_IIC_Byte(IIC_Command);
- IIC_Wait_Ack();
- IIC_Stop();
- }
- void Write_IIC_Data(unsigned char IIC_Data)
- {
- IIC_Start();
- Write_IIC_Byte(0x78);//D/C#=0; R/W#=0
- IIC_Wait_Ack();
- Write_IIC_Byte(0x40);//write data
- IIC_Wait_Ack();
- Write_IIC_Byte(IIC_Data);
- IIC_Wait_Ack();
- IIC_Stop();
- }
- void OLED_WR_Byte(unsigned dat,unsigned cmd)
- {
- if(cmd)
- Write_IIC_Data(dat);
- else
- Write_IIC_Command(dat);
- }
液晶初始化代码： - void OLED_Init(void)
- {
- Delay(5000);
- WriteCmd(0xAE); //display off
- WriteCmd(0x20); //Set Memory Addressing Mode
- WriteCmd(0x10); //00,Horizontal Addressing Mode;01,Vertical Addressing Mode;10,Page Addressing Mode (RESET);11,Invalid
- WriteCmd(0xb0); //Set Page Start Address for Page Addressing Mode,0-7
- WriteCmd(0xc8); //Set COM Output Scan Direction
- WriteCmd(0x00); //---set low column address
- WriteCmd(0x10); //---set high column address
- WriteCmd(0x40); //--set start line address
- WriteCmd(0x81); //--set contrast control register
- WriteCmd(0xff); //亮度调节 0x00~0xff
- WriteCmd(0xa1); //--set segment re-map 0 to 127
- WriteCmd(0xa6); //--set normal display
- WriteCmd(0xa8); //--set multiplex ratio(1 to 64)
- WriteCmd(0x3F); //
- WriteCmd(0xa4); //0xa4,Output follows RAM content;0xa5,Output ignores RAM content
- WriteCmd(0xd3); //-set display offset
- WriteCmd(0x00); //-not offset
- WriteCmd(0xd5); //--set display clock divide ratio/oscillator frequency
- WriteCmd(0xf0); //--set divide ratio
- WriteCmd(0xd9); //--set pre-charge period
- WriteCmd(0x22); //
- WriteCmd(0xda); //--set com pins hardware configuration
- WriteCmd(0x12);
- WriteCmd(0xdb); //--set vcomh
- WriteCmd(0x20); //0x20,0.77xVcc
- WriteCmd(0x8d); //--set DC-DC enable
- WriteCmd(0x14); //
- WriteCmd(0xaf); //--turn on oled panel
- }
串口2中断代码：- void USART2_Isr(void)
- {
- static u16 us_rlen;
- if(USART_ReadIntFlag(USART2, USART_INT_RXBNE)) {
- usart2_rxBuf[us_rlen++] = (uint8_t)USART_RxData(USART2);
- APM_MINI_LEDToggle(LED2);
- } else if(USART_ReadIntFlag(USART2, USART_INT_IDLE)) {
- if(us_rlen < 100) {
- memcpy(show_buf,usart2_rxBuf,us_rlen);
- show_buf[us_rlen] = '\0';
- us_rlen = 0;
- } else {
- us_rlen = 0;
- }
- USART_RxData(USART2);
- }
- }
主程序代码： - int main(void)
- {
- //外设初始化
- USART_Configuration();
- OLED_Configuration();
- OLED_Init();
- //全屏亮全屏灭
- OLED_Fill(0xFF);
- Delay(10000);
- OLED_Fill(0x00);
- Delay(10000);
- //开机显示
- OLED_ShowStr(0,0,(unsigned char*)"Hello Geehy",2);
- OLED_ShowStr(0,2,(unsigned char*)"APM32F107_MINI",2);
- OLED_ShowStr(0,4,(unsigned char*)"USART_2_OLED",2);
- Delay(10000000);
- OLED_CLS();
- while (1) {
- //OLED显示串口2接收的数据
- OLED_ShowStr(0,0,(unsigned char*)"USART2_REV:",2);
- OLED_ShowStr(0,2,(unsigned char*)show_buf,2);
- Delay(100);
- }
- }
测试总结： 很早就用过极海的F103片子做过一些产品，之前都是用ST的标准库进行开发直接烧进去的，这是第一次用极海的库来开发测试，感觉在部分功能代码要简洁不少，具体后面再慢慢研究。 最大的遗憾就是F107的板子居然没有网口，看图片开始还以为那个银白色的电源接口是网口，本来是想着主要测试一下网络部分的，不过也没关系，好在IO都拉出来了，后面弄个模块接上去可以测试一下网络功能，毕竟这个是MINI板。 厂家的SDK和相关文档做得还是少了一点，部分外设模块的常用功能就没有写相关例程，希望后续还是能够补充起来，这样可以帮助用户提高开发效率，另外我连F107的数据手册在官网都没找到。 最后祝极海越做越好，祝国产越做越好！
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