沁恒蓝牙协议栈中已支持PA控制信号，
- /*******************************************************************************
- * @fn BLE_PAControlInit
- *
- * [url=home.php?mod=space&uid=247401]@brief[/url] pa control init
- * Can't be called until role Init
- *
- * input parameters
- *
- * @param paControl - pa control parameters(global variable)
- *
- * output parameters
- *
- * @param None.
- *
- * [url=home.php?mod=space&uid=266161]@return[/url] Command Status.
- */
- extern void BLE_PAControlInit( blePaControlConfig_t *paControl );
- //必须全局变量
- blePaControlConfig_t pa_lna_ctl;
-
- //设置对应的IO为输出模式
- GPIOA_ModeCfg(GPIO_Pin_3|GPIO_Pin_4, GPIO_ModeOut_PP_5mA);
-
- //设置对应的GPIO为对应的拉高拉低寄存器
- //对应的pin是bit
- pa_lna_ctl.txEnableGPIO = (uint32_t)&R32_PA_OUT;
- pa_lna_ctl.txDisableGPIO = (uint32_t)&R32_PA_CLR;
- pa_lna_ctl.tx_pin = GPIO_Pin_3;
- pa_lna_ctl.rxEnableGPIO = (uint32_t)&R32_PA_OUT;
- pa_lna_ctl.rxDisableGPIO = (uint32_t)&R32_PA_CLR;
- pa_lna_ctl.rx_pin = GPIO_Pin_4;
-
- //下面调用要在GAPRole_PeripheralInit,GAPRole_CentralInit 之类的代码调用之后才能调用
- BLE_PAControlInit( &pa_lna_ctl );
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