【RISC-V 沁恒微-CH585M-R1开发板试用体验】+BLE远程控灯

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承接上期的呼吸灯效贴，今天来分享一下，将开发板做为BLE从机，手机做为BLE主机，在手机端的蓝牙调试助手发送指定字符去控制板上的LED0、LED1。

基于SDK中提供的从机“Peripheral”例程，手机端应用市场安装好“BLE调试助手”app。编译“Peripheral”例程后，使用“WCHISPStudio”下载编译后的“Peripheral.hex”文件。然后打开手机端的蓝牙与GPS开关，打开“BLE调试助手”app，扫描连接“Simple Peripheral”设备。连接该设备后则可看到“Generic Access”、“Generic Attribute”、“设备信息”和“Unknown Service”所有服务项。

其中的Unknown Service服务是我们所需着重关注的，该服务是程序中自定义的一个通讯服务，UUID为0xFFE0，点击该条目，界面显示出0xFFE0服务下所有的characteristic，其包括“0xFFE1”、“0xFFE2”、“0xFFE3”、“0xFFE4”和“0xFFE5”，并显示出该服务的Properties。具体如下图所示：

根据图示可知，我们可通过“0xFFE1”，““0xFFE3”两个特征服务给开发进行写操作，也就是发送字符给开发板解析。然后回到例程中的“Peripheral_Init()”函数。

void Peripheral_Init()
{
Peripheral_TaskID = TMOS_ProcessEventRegister(Peripheral_ProcessEvent);
// Setup the GAP Peripheral Role Profile
{
uint8_t initial_advertising_enable = TRUE;
uint16_t desired_min_interval = DEFAULT_DESIRED_MIN_CONN_INTERVAL;
uint16_t desired_max_interval = DEFAULT_DESIRED_MAX_CONN_INTERVAL;
// Set the GAP Role Parameters
GAPRole_SetParameter(GAPROLE_ADVERT_ENABLED, sizeof(uint8_t), &initial_advertising_enable);
GAPRole_SetParameter(GAPROLE_SCAN_RSP_DATA, sizeof(scanRspData), scanRspData);
GAPRole_SetParameter(GAPROLE_ADVERT_DATA, sizeof(advertData), advertData);
GAPRole_SetParameter(GAPROLE_MIN_CONN_INTERVAL, sizeof(uint16_t), &desired_min_interval);
GAPRole_SetParameter(GAPROLE_MAX_CONN_INTERVAL, sizeof(uint16_t), &desired_max_interval);
}
{
uint16_t advInt = DEFAULT_ADVERTISING_INTERVAL;
// Set advertising interval
GAP_SetParamValue(TGAP_DISC_ADV_INT_MIN, advInt);
GAP_SetParamValue(TGAP_DISC_ADV_INT_MAX, advInt);
// Enable scan req notify
GAP_SetParamValue(TGAP_ADV_SCAN_REQ_NOTIFY, ENABLE);
}
// Setup the GAP Bond Manager
{
uint32_t passkey = 0; // passkey "000000"
uint8_t pairMode = GAPBOND_PAIRING_MODE_WAIT_FOR_REQ;
uint8_t mitm = TRUE;
uint8_t bonding = TRUE;
uint8_t ioCap = GAPBOND_IO_CAP_DISPLAY_ONLY;
GAPBondMgr_SetParameter(GAPBOND_PERI_DEFAULT_PASSCODE, sizeof(uint32_t), &passkey);
GAPBondMgr_SetParameter(GAPBOND_PERI_PAIRING_MODE, sizeof(uint8_t), &pairMode);
GAPBondMgr_SetParameter(GAPBOND_PERI_MITM_PROTECTION, sizeof(uint8_t), &mitm);
GAPBondMgr_SetParameter(GAPBOND_PERI_IO_CAPABILITIES, sizeof(uint8_t), &ioCap);
GAPBondMgr_SetParameter(GAPBOND_PERI_BONDING_ENABLED, sizeof(uint8_t), &bonding);
}
// Initialize GATT attributes
GGS_AddService(GATT_ALL_SERVICES); // GAP
GATTServApp_AddService(GATT_ALL_SERVICES); // GATT attributes
DevInfo_AddService(); // Device Information Service
SimpleProfile_AddService(GATT_ALL_SERVICES); // Simple GATT Profile
// Set the GAP Characteristics
GGS_SetParameter(GGS_DEVICE_NAME_ATT, GAP_DEVICE_NAME_LEN, attDeviceName);
// Setup the SimpleProfile Characteristic Values
{
uint8_t charValue1[SIMPLEPROFILE_CHAR1_LEN] = {1};
uint8_t charValue2[SIMPLEPROFILE_CHAR2_LEN] = {2};
uint8_t charValue3[SIMPLEPROFILE_CHAR3_LEN] = {3};
uint8_t charValue4[SIMPLEPROFILE_CHAR4_LEN] = {4};
uint8_t charValue5[SIMPLEPROFILE_CHAR5_LEN] = {1, 2, 3, 4, 5};
SimpleProfile_SetParameter(SIMPLEPROFILE_CHAR1, SIMPLEPROFILE_CHAR1_LEN, charValue1);
SimpleProfile_SetParameter(SIMPLEPROFILE_CHAR2, SIMPLEPROFILE_CHAR2_LEN, charValue2);
SimpleProfile_SetParameter(SIMPLEPROFILE_CHAR3, SIMPLEPROFILE_CHAR3_LEN, charValue3);
SimpleProfile_SetParameter(SIMPLEPROFILE_CHAR4, SIMPLEPROFILE_CHAR4_LEN, charValue4);
SimpleProfile_SetParameter(SIMPLEPROFILE_CHAR5, SIMPLEPROFILE_CHAR5_LEN, charValue5);
}
// Init Connection Item
peripheralInitConnItem(&peripheralConnList);
// Register callback with SimpleGATTprofile
SimpleProfile_RegisterAppCBs(&Peripheral_SimpleProfileCBs);
// Register receive scan request callback
GAPRole_BroadcasterSetCB(&Broadcaster_BroadcasterCBs);
// Setup a delayed profile startup
tmos_set_event(Peripheral_TaskID, SBP_START_DEVICE_EVT);
}

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// Register callback with SimpleGATTprofile即是初始化注册的特征值变化回调接口。

// Simple GATT Profile Callbacks
static simpleProfileCBs_t Peripheral_SimpleProfileCBs = {
simpleProfileChangeCB // Characteristic value change callback
};

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然后再根据实验需求，在“simpleProfileChangeCB()”函数中实现控制板上LED0，LED1的逻辑处理代码。

/*********************************************************************
* @fn simpleProfileChangeCB
*
* @brief Callback from SimpleBLEProfile indicating a value change
*
* @param paramID - parameter ID of the value that was changed.
* pValue - pointer to data that was changed
* len - length of data
*
* @return none
*/
static void simpleProfileChangeCB(uint8_t paramID, uint8_t *pValue, uint16_t len)
{
switch(paramID)
{
case SIMPLEPROFILE_CHAR1:
{
uint8_t newValue[SIMPLEPROFILE_CHAR1_LEN];
tmos_memcpy(newValue, pValue, len);
if(newValue[0])
{
if(newValue[0]== 0x30)
{
GPIOA_SetBits(GPIO_Pin_0); //关闭LED0
}
else if(newValue[0]==0x31)
{
GPIOA_ResetBits(GPIO_Pin_0); //打开LED0
}
else if(newValue[0]==0x32)
{
GPIOA_SetBits(GPIO_Pin_1); //关闭LED1
}
else if(newValue[0]==0x33)
{
GPIOA_ResetBits(GPIO_Pin_1); //打开LED1
}
}
PRINT("profile ChangeCB CHAR1.. \n");
break;
}
case SIMPLEPROFILE_CHAR3:
{
uint8_t newValue[SIMPLEPROFILE_CHAR3_LEN];
tmos_memcpy(newValue, pValue, len);
PRINT("profile ChangeCB CHAR3..\n");
break;
}
default:
// should not reach here!
break;
}
}

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实验在“0xFFE1”服务特征值下进行，因此添加逻辑代码在“SIMPLEPROFILE_CHAR1”，如果想在“0xFFE3”服务特征值下实验，则将逻辑代码添加到“SIMPLEPROFILE_CHAR3”下。
完成上述代码编写完后，当然记得在main函数中添加LED0、LED1的GPIO口初始化代码，默认关闭LED0、LED1。这里笔者LED0使用PA0，LED1使用PA1。main()函数中内容如下：

/*********************************************************************
* @fn main
*
* @brief 主函数
*
* @return none
*/
int main(void)
{
#if(defined(DCDC_ENABLE)) && (DCDC_ENABLE == TRUE)
PWR_DCDCCfg(ENABLE);
#endif
HSECFG_Capacitance(HSECap_18p);
SetSysClock(CLK_SOURCE_HSE_PLL_62_4MHz);
#if(defined(HAL_SLEEP)) && (HAL_SLEEP == TRUE)
GPIOA_ModeCfg(GPIO_Pin_All, GPIO_ModeIN_PU);
GPIOB_ModeCfg(GPIO_Pin_All, GPIO_ModeIN_PU);
#endif
#ifdef DEBUG
GPIOA_SetBits(GPIO_Pin_14);
GPIOPinRemap(ENABLE, RB_PIN_UART0);
GPIOA_ModeCfg(GPIO_Pin_14, GPIO_ModeOut_PP_5mA);
UART0_DefInit();
#endif
PRINT("%s\n", VER_LIB);
//LED 0
GPIOA_ModeCfg( GPIO_Pin_0, GPIO_ModeOut_PP_5mA );
//LED 1
GPIOA_ModeCfg( GPIO_Pin_1, GPIO_ModeOut_PP_5mA );
GPIOA_SetBits(GPIO_Pin_0);
GPIOA_SetBits(GPIO_Pin_1); //默认关闭LED0、LED1
CH58x_BLEInit();
HAL_Init();
GAPRole_PeripheralInit();
Peripheral_Init();
Main_Circulation();
}

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开发板的硬件实物连线如下：

工程编译、下载后，实验的演示效果见B站视频：https://www.bilibili.com/video/BV1CfGnz2Ej8/

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