单片机控制SIM900模块来发送彩信的程序代码 void Caixin_fa(void){uint16_t i;UART4_printf(UART4,"ATI\r");Delay_ms(500);UART4_printf(UART4,"AT+CPIN?\r");//查询SIM卡状态，正常+CPIN:READYDelay_ms(500);UART4_printf(UART4,"at+cmmsinit\r");//初始化彩信Delay_ms(50... 2023-06-13 单片机SIM900模块彩信文章软件开发程序设计
