2.4G讲解(BasicMode)
BASIC模式讲解
下方代码实现基于basic模式下一端发送数据,另一端接收数据并返回数据的双向传输。
RF_PHY.c工程替换即可使用,注意未定义的tmos任务自行定义
#include "CONFIG.h"
#include "RF_PHY.h"
#define RF_AUTO_MODE_EXAM 0
#define rxmode 1
uint8_t taskID;
uint8_t TX_DATA[10] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 0};
uint8_t rxmodeTX_DATA[10] = {0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x10};
//RF 状态回调,注意:不可在此函数中直接调用RF接收或者发送API,需要使用事件的方式调用,通过tmos管理
void RF_2G4StatusCallBack(uint8_t sta, uint8_t crc, uint8_t *rxBuf)
{
switch(sta)
{
case TX_MODE_TX_FINISH:
{
tmos_set_event(taskID, peripheral_RX_EVT);
break;
}
case TX_MODE_TX_FAIL:
{
break;
}
case TX_MODE_RX_DATA: //basic模式不会运行到此处
{
break;
}
case TX_MODE_RX_TIMEOUT: // Timeout is about 200us
{
break;
}
case RX_MODE_RX_DATA:
{
if (crc == 0) {
uint8_t i;
PRINT("rx recv, rssi: %d\n", (int8_t)rxBuf[0]);
PRINT("len:%d - ", rxBuf[1]);
for (i = 0; i < rxBuf[1]; i++) {
PRINT("%x ", rxBuf[i + 2]);
}
PRINT("\n");
} else {
if (crc & (1<<0)) {
PRINT("crc error\n");
}
if (crc & (1<<1)) {
PRINT("match type error\n");
}
}
#if rxmode
tmos_set_event(taskID, peripheral_TX_EVT );
#endif
#if (!RF_AUTO_MODE_EXAM)
tmos_set_event(taskID, SBP_RF_RF_RX_EVT); //当前工程,可以删除
#endif
break;
}
case RX_MODE_TX_FINISH: //basic模式不会运行到此处
{
break;
}
case RX_MODE_TX_FAIL:
{
break;
}
}
PRINT("STA: %x\n", sta);
}
uint16_t RF_ProcessEvent(uint8_t task_id, uint16_t events)
{
if(events & SYS_EVENT_MSG)
{
uint8_t *pMsg;
if((pMsg = tmos_msg_receive(task_id)) != NULL)
{
// Release the TMOS message
tmos_msg_deallocate(pMsg);
}
// return unprocessed events
return (events ^ SYS_EVENT_MSG);
}
if(events & SBP_RF_START_DEVICE_EVT)
{
tmos_start_task(taskID, SBP_RF_PERIODIC_EVT, 1000);
return events ^ SBP_RF_START_DEVICE_EVT;
}
if(events & SBP_RF_PERIODIC_EVT)
{
RF_Shut();
RF_Tx(TX_DATA, 10, 0xFF, 0xFF);
tmos_start_task(taskID, SBP_RF_PERIODIC_EVT, 10);
return events ^ SBP_RF_PERIODIC_EVT;
}
if(events & SBP_RF_RF_RX_EVT)
{
uint8_t state;
RF_Shut();
TX_DATA[0]++;
state = RF_Rx(TX_DATA, 10, 0xFF, 0xFF);
PRINT("RX mode.state = %x\n", state);
return events ^ SBP_RF_RF_RX_EVT;
}
if(events & peripheral_TX_EVT)
{
RF_Shut();
uint8 ret = RF_Tx(rxmodeTX_DATA, 10, 0xFF, 0xFF);
return events ^ peripheral_TX_EVT;
}
if(events & peripheral_RX_EVT)
{
RF_Shut();
uint8 ret = RF_Rx(NULL, 10, 0xFF, 0xFF);
return events ^ peripheral_RX_EVT;
}
return 0;
}
void RF_Init(void)
{
uint8_t state;
rfConfig_t rfConfig;
tmos_memset(&rfConfig, 0, sizeof(rfConfig_t));
taskID = TMOS_ProcessEventRegister(RF_ProcessEvent);
rfConfig.accessAddress = 0x71764129; // 禁止使用0x55555555以及0xAAAAAAAA ( 建议不超过24次位反转,且不超过连续的6个0或1 )
rfConfig.CRCInit = 0x555555;
rfConfig.Channel = 8;
rfConfig.Frequency = 2480000;
#if RF_AUTO_MODE_EXAM
rfConfig.LLEMode = LLE_MODE_AUTO;
#else
rfConfig.LLEMode = LLE_MODE_BASIC | LLE_MODE_EX_CHANNEL; // 使能 LLE_MODE_EX_CHANNEL 表示 选择 rfConfig.Frequency 作为通信频点
#endif
rfConfig.rfStatusCB = RF_2G4StatusCallBack;
rfConfig.RxMaxlen = 251;
state = RF_Config(&rfConfig);
PRINT("rf 2.4g init: %x\n", state);
#if rxmode
{ // RX mode
state = RF_Rx(TX_DATA, 10, 0xFF, 0xFF);
PRINT("RX mode.state = %x\n", state);
}
#else
{ // TX mode
PRINT("TX mode");
tmos_set_event( taskID , SBP_RF_PERIODIC_EVT );
}
#endif
}