I’m using the M65 OpenCPU SDK to program the chip, but I can’t get the UART to work. I’m using the provided gpio example:
/*****************************************************************************
* Copyright Statement:
* --------------------
* This software is protected by Copyright and the information contained
* herein is confidential. The software may not be copied and the information
* contained herein may not be used or disclosed except with the written
* permission of Quectel Co., Ltd. 2019
*
*****************************************************************************/
/*****************************************************************************
*
* Filename:
* ---------
* example_gpio.c
*
* Project:
* --------
* OpenCPU
*
* Description:
* ------------
* This example demonstrates how to program a GPIO pin in OpenCPU.
* This example choose PINNAME_STATUS pin as GPIO.
*
* All debug information will be output through DEBUG port.
*
* The "Enum_PinName" enumeration defines all the GPIO pins.
*
* Usage:
* ------
* Compile & Run:
*
* Set "C_PREDEF=-D __EXAMPLE_GPIO__" in gcc_makefile file. And compile the
* app using "make clean/new".
* Download image bin to module to run.
*
* Author:
* -------
* -------
*
*============================================================================
* HISTORY
*----------------------------------------------------------------------------
*
****************************************************************************/
#ifdef __EXAMPLE_GPIO__
#include "ql_trace.h"
#include "ql_system.h"
#include "ql_gpio.h"
#include "ql_stdlib.h"
#include "ql_error.h"
#include "ql_uart.h"
#define DEBUG_ENABLE 1
#if DEBUG_ENABLE > 0
#define DEBUG_PORT UART_PORT1
#define DBG_BUF_LEN 512
static char DBG_BUFFER[DBG_BUF_LEN];
#define APP_DEBUG(FORMAT,...) {\
Ql_memset(DBG_BUFFER, 0, DBG_BUF_LEN);\
Ql_sprintf(DBG_BUFFER,FORMAT,##__VA_ARGS__); \
if (UART_PORT2 == (DEBUG_PORT)) \
{\
Ql_Debug_Trace(DBG_BUFFER);\
} else {\
Ql_UART_Write((Enum_SerialPort)(DEBUG_PORT), (u8*)(DBG_BUFFER), Ql_strlen((const char *)(DBG_BUFFER)));\
}\
}
#else
#define APP_DEBUG(FORMAT,...)
#endif
static void CallBack_UART_Hdlr(Enum_SerialPort port, Enum_UARTEventType msg, bool level, void* customizedPara)
{
}
static void GPIO_Program(void)
{
// Specify a GPIO pin
Enum_PinName gpioPin = PINNAME_NETLIGHT;
// Define the initial level for GPIO pin
Enum_PinLevel gpioLvl = PINLEVEL_HIGH;
// Initialize the GPIO pin (output high level, pull up)
Ql_GPIO_Init(gpioPin, PINDIRECTION_OUT, gpioLvl, PINPULLSEL_PULLUP);
APP_DEBUG("<-- Initialize GPIO pin (PINNAME_STATUS): output, high level, pull up -->\r\n");
// Get the direction of GPIO
APP_DEBUG("<-- Get the GPIO direction: %d -->\r\n", Ql_GPIO_GetDirection(gpioPin));
// Get the level value of GPIO
APP_DEBUG("<-- Get the GPIO level value: %d -->\r\n\r\n", Ql_GPIO_GetLevel(gpioPin));
// Set the GPIO level to low after 500ms.
APP_DEBUG("<-- Set the GPIO level to low after 500ms -->\r\n");
Ql_Sleep(500);
Ql_GPIO_SetLevel(gpioPin, PINLEVEL_LOW);
APP_DEBUG("<-- Get the GPIO level value: %d -->\r\n\r\n", Ql_GPIO_GetLevel(gpioPin));
// Set the GPIO level to high after 500ms.
APP_DEBUG("<-- Set the GPIO level to high after 500ms -->\r\n");
Ql_Sleep(500);
Ql_GPIO_SetLevel(gpioPin, PINLEVEL_HIGH);
APP_DEBUG("<-- Get the GPIO level value: %d -->\r\n", Ql_GPIO_GetLevel(gpioPin));
}
/************************************************************************/
/* The entrance for this example application */
/************************************************************************/
void proc_main_task(s32 taskId)
{
s32 ret;
ST_MSG msg;
// Register & open UART port
ret = Ql_UART_Register(UART_PORT1, CallBack_UART_Hdlr, NULL);
if (ret < QL_RET_OK)
{
Ql_Debug_Trace("Fail to register serial port[%d], ret=%d\r\n", UART_PORT1, ret);
}
ret = Ql_UART_Open(UART_PORT1, 115200, FC_NONE);
if (ret < QL_RET_OK)
{
Ql_Debug_Trace("Fail to open serial port[%d], ret=%d\r\n", UART_PORT1, ret);
}
APP_DEBUG("\r\n<-- OpenCPU: GPIO Example -->\r\n");
// Start to program GPIO pin
GPIO_Program();
// Start message loop of this task
while (TRUE)
{
Ql_OS_GetMessage(&msg);
switch(msg.message)
{
case MSG_ID_USER_START:
break;
default:
break;
}
}
}
#endif //__EXAMPLE_GPIO__
I don’t get any output on the RX/TX pins (pins 17 and 18), and the output from DBG_TX/DBG_RX pins (pins 38 and 39) is garbage no matter what baud rate I set on my side. I tried replacing all of the "UART_PORT1"s in the code above with “UART_PORT2” but I’ve had no success. Can anyone help? Thanks a lot