Writing BLE firmware with a few lines of code

Writing a BLE firmware can now be done with a few lines of code. The code example bellow is all you need to write for a non-connectable BLE firmware that advertise a counter value every second in the manufacturer private data. More details with full Eclipse GCC project ready to use on the embedded software blog page.

#include <string.h>

#include "app_util.h"

#include "istddef.h"
#include "ble_app.h"

#define DEVICE_NAME                     "Advertiser"

#define APP_ADV_INTERVAL                MSEC_TO_UNITS(100, UNIT_0_625_MS)
#define APP_ADV_TIMEOUT_IN_SECONDS      1

uint32_t g_AdvCnt = 0;

const BLEAPP_CFG s_BleAppCfg = {
	{ // Clock config nrf_clock_lf_cfg_t
#ifdef IMM_NRF51822
		NRF_CLOCK_LF_SRC_RC,	// Source RC
		1, 1, 0
#else
		NRF_CLOCK_LF_SRC_XTAL,	// Source 32KHz XTAL
#ifdef NRF51
		0, 0, NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM
#else
		0, 0, NRF_CLOCK_LF_ACCURACY_20_PPM
#endif
#endif
	},
	0, 						// Number of central link
	0, 						// Number of peripheral link
	BLEAPP_MODE_NOCONNECT,  // Connectionless beacon type
	DEVICE_NAME,            // Device name
	ISYST_BLUETOOTH_ID,     // PnP Bluetooth/USB vendor id
	1,                      // PnP Product ID
	0,						// Pnp prod version
	false,					// Enable device information service (DIS)
	NULL,					// Pointer device info descriptor
	(uint8_t*)&g_AdvCnt,   	// Manufacture specific data to advertise
	sizeof(g_AdvCnt),      	// Length of manufacture specific data
	BLEAPP_SECTYPE_NONE,    // Secure connection type
	BLEAPP_SECEXCHG_NONE,   // Security key exchange
	NULL,      				// Service uuids to advertise
	0, 						// Total number of uuids
	APP_ADV_INTERVAL,       // Advertising interval in msec
	APP_ADV_TIMEOUT_IN_SECONDS,	// Advertising timeout in sec
	100,                        // Slow advertising interval, if > 0, fallback to
								// slow interval on adv timeout and advertise until connected
	0,		// Min. connection interval
	0,		// Max. connection interval
	-1,    	// Led port nuber
	-1,     // Led pin number
	0, 		// Tx power
	NULL						// RTOS Softdevice handler
};

void BlePeriphEvtUserHandler(ble_evt_t * p_ble_evt)
{
    if (p_ble_evt->header.evt_id == BLE_GAP_EVT_TIMEOUT)
    {
    	// for re-advertisement
    	g_AdvCnt++;

    	BleAppAdvManDataSet((uint8_t*)&g_AdvCnt, sizeof(g_AdvCnt));
    }
}


int main()
{
    BleAppInit((const BLEAPP_CFG *)&s_BleAppCfg, true);

    BleAppRun();

	return 0;
}
Anonymous