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USB (十八)2022-04-17
2022-07-07 21:50:00 【晓晓暮雨潇潇】
Cyusb3014开发经验总结
1.固件开发
1.1串口打印调试信息
在固件开发时,可以利用串口打印调试信息,获得代码执行情况的指示。固件中,用于打印调试信息的串口配置如下,其中波特率的设置为112500,停止位为1,无校验位。在程序设计过程中,可在适当位置调用CyU3PDebugPrint函数打印信息,固件工程中可查看该函数原型。赛普拉斯官方代码非常规范,很多地方会进行返回值有效性检测并打印相关信息,在数据发送过程中,可以关注串口信息,看是否数据有溢出或丢失,如下图所示。
CyU3PUartConfig_t uartConfig;
CyU3PMemSet ((uint8_t *)&uartConfig, 0, sizeof (uartConfig));
uartConfig.baudRate = CY_U3P_UART_BAUDRATE_115200;
uartConfig.stopBit = CY_U3P_UART_ONE_STOP_BIT;
uartConfig.parity = CY_U3P_UART_NO_PARITY;
uartConfig.txEnable = CyTrue;
uartConfig.rxEnable = CyFalse;
uartConfig.flowCtrl
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