QCC300x UART

未经本人同意 请务转载 David QQ:435398366

QCC300X 的PIO[0]和PIO[1]为UART的RX和TX，PIO[8]和PIO[9]为UART的RTS和CTS

注意 QCC300X 的IO电压是1.8V的，最好不要直接接到3.3V 或 5V ，测试UART的时候用3.3V的MCU 通讯没有问题，量产的时候最好不要这样接

PStool -> UART configuration when under VM control -> 08a0

PStool -> UART baud rate in bits per second -> 38400

xIDE -> project -> properties -> transport -> raw

注意检查一下配置 PIO[0] 和 PIO[1] 是否被其他功能占用（这里浪费了几天时间，程序运行就报错，导致串口功能几天没处理好，DEBUG 调试发现是在电池温度检测函数报错，默认PIO 0 用作电池温度检测，如果电池没有温度传感器可以将温控功能禁用）

测试代码

#include "sink_debug.h"
#include <print.h>
#include <stream.h>
#include <sink.h>
#include <source.h>
#include <string.h>
#include <panic.h>
#include <message.h>
#include <app/uart/uart_if.h>
#include <uart.h>

#ifdef DEBUG_UART
#define UART_DEBUG(x)          DEBUG(x)
#define UART_DUMP(buf,cnt)     do{uint32 idx=0;for(idx=0;idx<cnt;idx++){DEBUG(("%02X",buf[idx]));}DEBUG(("
"));}while(0)
#else
#define UART_DEBUG(x)
#define UART_DUMP(buf,cnt)
#endif

typedef struct{
    TaskData task;
    Sink uart_sink;
    Source uart_source;
} UARTStreamTaskData;

UARTStreamTaskData theUARTStreamTask;

static void UARTStreamMessageHandler (Task pTask, MessageId pId, Message pMessage);
static void uart_data_stream_rx_data(Source src);
static void uart_data_stream_tx_data(const uint8 *data, uint16 length);

void uart_data_stream_init(void){
    /* Assign task message handler */
    theUARTStreamTask.task.handler = UARTStreamMessageHandler;
    /* Configure uart settings */
    StreamUartConfigure(VM_UART_RATE_115K2, VM_UART_STOP_ONE, VM_UART_PARITY_NONE);
    /* Get the sink for the uart */
    theUARTStreamTask.uart_sink = StreamUartSink();
    PanicNull(theUARTStreamTask.uart_sink);
    /* Get the source for the uart */
    theUARTStreamTask.uart_source = StreamUartSource();
    PanicNull(theUARTStreamTask.uart_source);
    /* Register uart source with task */
    MessageSinkTask(StreamSinkFromSource(theUARTStreamTask.uart_source),&theUARTStreamTask.task);
    /*(void)VmalMessageSinkTask(StreamSinkFromSource(theUARTStreamTask.uart_source),&theUARTStreamTask.task); */
    UART_DEBUG(("uart_data_stream_init"));
}

void UARTStreamMessageHandler (Task pTask, MessageId pId, Message pMessage){
    UART_DEBUG(("UARTStreamMessageHandler
"));
    switch (pId){
        case MESSAGE_MORE_DATA:
            uart_data_stream_rx_data(((MessageMoreData *)pMessage)->source);
            break;
        default:
            break;
    }
}

void uart_data_stream_rx_data(Source src){
    uint16 length = 0;
    const uint8 *data = NULL;
    /* Get the number of bytes in the specified source before the next packet
    boundary */
    if(!(length = SourceBoundary(src)))
        return;
    /* Maps the specified source into the address map */
    data = SourceMap(src);
    PanicNull((void*)data);
    UART_DUMP(data,length);
    /* Transmit the received data */
    uart_data_stream_tx_data(data, length);
    /* Discards the specified amount of bytes from the front of the specified source */
    SourceDrop(src, length);
}

void uart_data_stream_tx_data(const uint8 *data, uint16 length) { 
    uint16 offset = 0; 
    uint8 *dest = NULL; 

    /* Claim space in the sink, getting the offset to it */ 
    offset = SinkClaim(theUARTStreamTask.uart_sink, length); 
    if(offset == 0xFFFF) Panic(); 

    /* Map the sink into memory space */ 
    dest = SinkMap(theUARTStreamTask.uart_sink); 
    PanicNull(dest); 

    /* Copy data into the claimed space */ 
    memcpy(dest+offset, data, length); 

    /*printf("%c", (*(dest+offset)));*/

    /* Flush the data out to the uart */ 
    PanicZero(SinkFlush(theUARTStreamTask.uart_sink, length)); 
}