LAUNCHXL-CC1350: RF和UART交互使用遇到問題-TI中文支持网

Part Number:LAUNCHXL-CC1350Other Parts Discussed in Thread:SYSBIOS, CC1350

您好，請問我們正在整合RX和UART，主要是讓兩個裝置能UART用無線相互傳送顯示(uart輸入資料儲存於packet[2]，並轉換成INT再TX，RX則是在callback_packet[2]中 )，目前配合smartRF stdio 測試TX應該沒有問題
但RX遇到以下問題:

1.測試傳送"123456789"，如果在RX接收成功時執行UART_write第一個字大部分的時候都無法接收(我在RX callbaclk內有printf進行測試)。

2.目前使用RX endtime來關閉RX，因為先使用RX但如果需要TX時，無法將目前正在執行的RX關閉，需要等收到RX訊號後才會TX，不知道目前這個timeout關閉RX的方式是否正確或是標準

程式基本上都是參照RfpacketRX進行修改的，程式碼如下(這是在mainThread內使用task):

/***** Includes *****/
/* Standard C Libraries */
#include <stdlib.h>

/* TI Drivers */
#include <ti/drivers/rf/RF.h>
#include <ti/drivers/PIN.h>
#include <ti/drivers/UART.h>
#include <ti/sysbios/knl/Task.h>

/* Driverlib Header files */
#include DeviceFamily_constructPath(driverlib/rf_prop_mailbox.h)

/* Board Header files */
#include "Board.h"

/* Application Header files */
#include "RFQueue.h"
#include "smartrf_settings/smartrf_settings.h"

/***** Defines *****/

/* Packet RX Configuration */
#define DATA_ENTRY_HEADER_SIZE 8 /* Constant header size of a Generic Data Entry */
#define MAX_LENGTH 30 /* Max length byte the radio will accept */
#define NUM_DATA_ENTRIES 2 /* NOTE: Only two data entries supported at the moment */
#define NUM_APPENDED_BYTES 2 /* The Data Entries data field will contain:
* 1 Header byte (RF_cmdPropRx.rxConf.bIncludeHdr = 0x1)
* Max 30 payload bytes
* 1 status byte (RF_cmdPropRx.rxConf.bAppendStatus = 0x1) */

/***** Prototypes *****/
static void callback(RF_Handle h, RF_CmdHandle ch, RF_EventMask e);

/***** Variable declarations *****/
static RF_Object rfObject;
static RF_Handle rfHandle;

/* Pin driver handle */
static PIN_Handle ledPinHandle;
static PIN_State ledPinState;

/* Buffer which contains all Data Entries for receiving data.
* Pragmas are needed to make sure this buffer is 4 byte aligned (requirement from the RF Core) */
#if defined(__TI_COMPILER_VERSION__)
#pragma DATA_ALIGN (rxDataEntryBuffer, 4);
static uint8_t
rxDataEntryBuffer[RF_QUEUE_DATA_ENTRY_BUFFER_SIZE(NUM_DATA_ENTRIES,
MAX_LENGTH,
NUM_APPENDED_BYTES)];
#elif defined(__IAR_SYSTEMS_ICC__)
#pragma data_alignment = 4
static uint8_t
rxDataEntryBuffer[RF_QUEUE_DATA_ENTRY_BUFFER_SIZE(NUM_DATA_ENTRIES,
MAX_LENGTH,
NUM_APPENDED_BYTES)];
#elif defined(__GNUC__)
static uint8_t
rxDataEntryBuffer[RF_QUEUE_DATA_ENTRY_BUFFER_SIZE(NUM_DATA_ENTRIES,
MAX_LENGTH,
NUM_APPENDED_BYTES)]
__attribute__((aligned(4)));
#else
#error This compiler is not supported.
#endif

/* Receive dataQueue for RF Core to fill in data */
/*RX*/
static dataQueue_t dataQueue;
static rfc_dataEntryGeneral_t* currentDataEntry;
static uint8_t packetLength;
static uint8_t* packetDataPointer;
static uint8_t callback_packet[MAX_LENGTH + NUM_APPENDED_BYTES – 1]; /* The length byte is stored in a separate variable */
#define timeout (uint32_t)(4000000*0.1f)
/*RX*/

/*RX Task*/
static Task_Struct rxTask;
#define RX_TASK_STACK_SIZE 1024
static uint8_t rxTaskStack[RX_TASK_STACK_SIZE];
/*RX Task*/

/*TX*/
#define PAYLOAD_LENGTH 30
static uint8_t packet[PAYLOAD_LENGTH];
static uint16_t seqNumber;
int tx_sending = 0;
static uint8_t send_packet[MAX_LENGTH + NUM_APPENDED_BYTES – 1];
/*TX*/

/*TX Task*/
static Task_Struct txTask;
#define TX_TASK_STACK_SIZE 1024
static uint8_t txTaskStack[TX_TASK_STACK_SIZE];
/*TX Task*/

/*Uart*/
UART_Handle uart;
UART_Params uartParams;
char input,output;
/*Uart*/

/*
* Application LED pin configuration table:
* – All LEDs board LEDs are off.
*/
PIN_Config pinTable[] =
{
Board_PIN_LED1 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,
Board_PIN_LED2 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,
PIN_TERMINATE
};

/***** Function definitions *****/

void led_init()
{
puts("led_init start");
ledPinHandle = PIN_open(&ledPinState, pinTable);

PIN_setOutputValue(ledPinHandle, Board_PIN_LED1,!PIN_getOutputValue(Board_PIN_LED1));
usleep(300000);
PIN_setOutputValue(ledPinHandle, Board_PIN_LED1,!PIN_getOutputValue(Board_PIN_LED1));

PIN_setOutputValue(ledPinHandle, Board_PIN_LED2,!PIN_getOutputValue(Board_PIN_LED2));
usleep(300000);
PIN_setOutputValue(ledPinHandle, Board_PIN_LED2,!PIN_getOutputValue(Board_PIN_LED2));

if (ledPinHandle == NULL)
{
   while(1);
}
}

void rfhandle_init()
{
puts("rfhandle_init");
RF_Params rfParams;
RF_Params_init(&rfParams);

if( RFQueue_defineQueue(&dataQueue,rxDataEntryBuffer,sizeof(rxDataEntryBuffer),NUM_DATA_ENTRIES,MAX_LENGTH + NUM_APPENDED_BYTES))
{
   /* Failed to allocate space for all data entries */
   while(1);
}

rfHandle = RF_open(&rfObject, &RF_prop, (RF_RadioSetup*)&RF_cmdPropRadioDivSetup, &rfParams);

int i = 0;

while(i<10)
{
   PIN_setOutputValue(ledPinHandle, Board_PIN_LED1,!PIN_getOutputValue(Board_PIN_LED1));
   usleep(100000);
   i++;
}

PIN_setOutputValue(ledPinHandle, Board_PIN_LED1,0);
}

void callback(RF_Handle h, RF_CmdHandle ch, RF_EventMask e)
{
if (e & RF_EventRxEntryDone)
{
   /* Toggle pin to indicate RX */
   PIN_setOutputValue(ledPinHandle, Board_PIN_LED2, 1);

   /* Get current unhandled data entry */
   currentDataEntry = RFQueue_getDataEntry();

   /* Handle the packet data, located at &currentDataEntry->data:
   * – Length is the first byte with the current configuration
   * – Data starts from the second byte */
   packetLength = *(uint8_t*)(&currentDataEntry->data);
   packetDataPointer = (uint8_t*)(&currentDataEntry->data + 1);

   /* Copy the payload + the status byte to the packet variable */
   memcpy(callback_packet, packetDataPointer, (packetLength + 1));
   printf("%d",callback_packet[2]);
   RFQueue_nextEntry();
}
}

void rx_init()
{
puts("rx_init");
/* Modify CMD_PROP_RX command for application needs */
/* Set the Data Entity queue for received data */
RF_cmdPropRx.pQueue = &dataQueue;
/* Discard ignored packets from Rx queue */
RF_cmdPropRx.rxConf.bAutoFlushIgnored = 1;
/* Discard packets with CRC error from Rx queue */
RF_cmdPropRx.rxConf.bAutoFlushCrcErr = 1;
/* Implement packet length filtering to avoid PROP_ERROR_RXBUF */
RF_cmdPropRx.maxPktLen = MAX_LENGTH;
RF_cmdPropRx.pktConf.bRepeatOk = 0;
RF_cmdPropRx.endTrigger.triggerType = TRIG_REL_START;
RF_cmdPropRx.endTime = timeout;

/* Set the frequency */
RF_postCmd(rfHandle, (RF_Op*)&RF_cmdFs, RF_PriorityNormal, NULL, 0);

while(1)
{
   if(tx_sending == 0)
   {
      /* Enter RX mode and stay forever in RX */
      RF_EventMask terminationReason = RF_runCmd(rfHandle, (RF_Op*)&RF_cmdPropRx,RF_PriorityNormal, &callback,RF_EventRxEntryDone);

      switch(terminationReason)
      {
         case RF_EventLastCmdDone:
            // A stand-alone radio operation command or the last radio
            // operation command in a chain finished.
            //puts("RF_EventLastCmdDone");
            break;
         default:
            // Uncaught error event
            puts("error1");
            while(1);
      }

      uint32_t cmdStatus = ((volatile RF_Op*)&RF_cmdPropRx)->status;
      switch(cmdStatus)
      {
         case PROP_DONE_OK:
           // Packet received with CRC OK
            //puts("PROP_DONE_OK");
            PIN_setOutputValue(ledPinHandle, Board_PIN_LED2, 0);

            output = callback_packet[2];

            UART_write(uart,&output,1);
            break;
         default:
            // Uncaught error event – these could come from the
           // pool of states defined in rf_mailbox.h
            break;
      }
   }
}
}

void uart_init()
{
UART_init();

UART_Params_init(&uartParams);
uartParams.writeDataMode = UART_DATA_BINARY;
uartParams.readDataMode = UART_DATA_BINARY;
uartParams.readReturnMode = UART_RETURN_FULL;
uartParams.readEcho = UART_ECHO_OFF;
uartParams.baudRate = 9600;

uart = UART_open(Board_UART0, &uartParams);

if (uart == NULL)
{
   /* UART_open() failed */
   while (1);
}
}

void rx_task_init()
{
puts("rx_task_init");

Task_Params rxTaskParams;

// TI-RTOS 用來初始化 Task_Params 的API ，這邊會給部分變數預設值
Task_Params_init(&rxTaskParams);
// 有些變數沒有預設值，必須要自行設定
rxTaskParams.stack = rxTaskStack; // 規劃給任務使用的Stack位址
rxTaskParams.stackSize = RX_TASK_STACK_SIZE;
rxTaskParams.priority = 2; // 任務的優先級，數字越大代表該任務越重要

Task_construct(&rxTask, rx_init, &rxTaskParams, NULL);
}

void task_init()
{
puts("tx_init");

RF_cmdPropTx.pktLen = PAYLOAD_LENGTH;
RF_cmdPropTx.pPkt = packet;
RF_cmdPropTx.startTrigger.triggerType = TRIG_NOW;

while(1)
{
   UART_read(uart,&input,1);

   tx_sending = 1;

   PIN_setOutputValue(ledPinHandle, Board_PIN_LED1,1);

   RF_yield(rfHandle);

   packet[0] = (uint8_t)(seqNumber >> 8);
   packet[1] = (uint8_t)(seqNumber++);
   uint8_t i;
   for (i = 2; i < MAX_LENGTH; i++)
   {
      packet[i] = rand();
   }

   packet[2] = input;

   RF_EventMask TXterminationReason = RF_runCmd(rfHandle, (RF_Op*)&RF_cmdPropTx, RF_PriorityNormal, NULL, 0);

   switch(TXterminationReason)
   {
      case RF_EventLastCmdDone:
         //puts("TX RF_EventLastCmdDone");
         break;
      default:
         // Uncaught error event
         //puts("TX error1");
         while(1);
   }

   uint32_t TXcmdStatus = ((volatile RF_Op*)&RF_cmdPropTx)->status;
   switch(TXcmdStatus)
   {
      case PROP_DONE_OK:
         //puts("TX PROP_DONE_OK");
         PIN_setOutputValue(ledPinHandle, Board_PIN_LED1,!PIN_getOutputValue(Board_PIN_LED1));
         break;
      default:
         //puts("TX error2");
         while(1);
   }

   tx_sending = 0;

   PIN_setOutputValue(ledPinHandle, Board_PIN_LED1,0);
}
}

void tx_task_init()
{
puts("tx_task_init");

Task_Params txTaskParams;

// TI-RTOS 用來初始化 Task_Params 的API ，這邊會給部分變數預設值
Task_Params_init(&txTaskParams);
// 有些變數沒有預設值，必須要自行設定
txTaskParams.stack = txTaskStack; // 規劃給任務使用的Stack位址
txTaskParams.stackSize = TX_TASK_STACK_SIZE;
txTaskParams.priority = 3; // 任務的優先級，數字越大代表該任務越重要

Task_construct(&txTask, task_init, &txTaskParams, NULL);
}

void *mainThread(void *arg0)
{
while(ledPinHandle == NULL)
{
   led_init();
}

while(rfHandle == NULL)
{
   rfhandle_init();
}

while(uart == NULL)
{
   uart_init();
}

rx_task_init();

tx_task_init();
}

Nick Sun：

您好，

收到您的问题了，我们升级到英文论坛给工程师看下，有答复尽快给到您。

,

Yi Shen：

好的謝謝您

,

Nick Sun：

您好，

callback实际上是中断处理。 printf 需要 2-3 毫秒，并且会在print时阻塞，不应在callback中使用。

您可以参阅以下示例： https://www.ti2k.com/wp-content/uploads/ti2k/DeyiSupport_1GHz_node

这个可以移植到CC1350或者您可以了解如何做 RF + UART。

,

Yi Shen：

您好 Nick,rfUARTBridge這個實例非常有幫助，但是請問CC1350是否可以使用UART2，若可以請問如何import，若無法請問用UART是否可以達到一樣的功能我參考這個連結似乎UART2修改都是與RF相關的: https://software-dl.ti.com/simplelink/esd/simplelink_cc13xx_cc26xx_sdk/6.10.00.29/exports/docs/ble5stack/ble_user_guide/html/cc13xx_cc26xx/uart_to_uart2.html

,

Yi Shen：

您好 Nick,剛剛測試您提供的範例，有一個小問題，因為bytesToRead設定為64，所以一定要在uart read64個字之後才進入uart的callback function中，請問是否可以根據我輸入的字數直接讀取呢?EX : 我輸入ABC就只讀取3個字並傳送(TX)。可以的話是否能提供簡單的範例程式，非常謝謝

UART2_read(uart, &input, bytesToRead, NULL);

,

Nick Sun：

您好，

CC1350应该是沒有UART2，另外一个帖子中YIKAI也回复您了

,

Yi Shen：

您好，

我也發現這點了，所以我用uart來做上面這個範例，另外我將程式改為uart_read(uart,&input,1)，若傳送的資訊不多的話，傳送沒有問題，但是否我可以直接根據輸入的字數進行讀取，例如直接讀取記憶體內資料?我希望能輸入123456789就讀9個字，如果可以的話，也請您提供我一個範例，就如上面的問題。

,

Nick Sun：

您好，

你有尝试去修改bytesToRead的值吗？

LAUNCHXL-CC1350: RF和UART交互使用遇到問題

Nick Sun：

Yi Shen：

Nick Sun：

Yi Shen：

Yi Shen：

Nick Sun：

Yi Shen：

Nick Sun：

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