RE: How can we use nrf51822 BLE services with RIOT OS without accessing to the lower layers ?

tnesheim — Fri, 29 May 2015 06:16:37 GMT

Can you go into more detail as to how you got this to work? I have done exactly as you did above and am using the command "BOARD=pca10005 make -B clean flash" but am getting the following error: ***** Error: Programming failed @ address 0x00000000 (block verification error) Error while programming flash: Programming failed.

It seems that it is still trying to program flash at 0x0 even though I changed the linker script file. Any thoughts or suggestions?

RE: How can we use nrf51822 BLE services with RIOT OS without accessing to the lower layers ?

Stian Røed Hafskjold — Wed, 04 Feb 2015 15:55:58 GMT

There is no existing libraries in RIOT OS for handling the s110 BLE stack. Maybe you could try to use the libraries in the nRF SDK. I successfully managed to compile RIOT OS while including the softdevice_hander.h.

You need to add the INCLUDES and some CFLAGS to the Makefile:

INCLUDES += -I../../sdk7.2/components/toolchain/gcc
INCLUDES += -I../../sdk7.2/components/toolchain
INCLUDES += -I../../sdk7.2/components/libraries/button
INCLUDES += -I../../sdk7.2/components/libraries/sensorsim
INCLUDES += -I../../sdk7.2/components/ble/ble_services/ble_hrs
INCLUDES += -I../../sdk7.2/components/ble/ble_services/ble_dis
INCLUDES += -I../../sdk7.2/components/ble/ble_services/ble_bas
INCLUDES += -I../../sdk7.2/components/softdevice/s110/headers
INCLUDES += -I../../sdk7.2/components/ble/common
INCLUDES += -I../../sdk7.2/components/libraries/timer
INCLUDES += -I../../sdk7.2/components/libraries/gpiote
INCLUDES += -I../../sdk7.2/components/drivers_nrf/hal
INCLUDES += -I../../sdk7.2/components/ble/device_manager
INCLUDES += -I../../sdk7.2/components/ble/device_manager/config
INCLUDES += -I../../sdk7.2/components/softdevice/common/softdevice_handler
INCLUDES += -I../../sdk7.2/components/libraries/scheduler
INCLUDES += -I../../sdk7.2/components/drivers_nrf/pstorage
INCLUDES += -I../../sdk7.2/components/drivers_nrf/pstorage/config
INCLUDES += -I../../sdk7.2/components/libraries/util
INCLUDES += -I../../sdk7.2/components/libraries/trace
INCLUDES += -I../../sdk7.2/components/drivers_nrf/uart
INCLUDES += -I../../sdk7.2/components/libraries/fifo
INCLUDES += -I../../sdk7.2/examples/bsp

CFLAGS += -DNRF51
CFLAGS += -DBLE_STACK_SUPPORT_REQD
CFLAGS += -DS110
CFLAGS += -DSOFTDEVICE_PRESENT

In the RIOT/cpu/nrf51822/nrf51822qfaa_linkerscript.ld linker script, you need to change the start address of the ROM and RAM:

rom (rx)    : ORIGIN = 0x00016000, LENGTH = 256K
ram (rwx)   : ORIGIN = 0x20002000, LENGTH = 16K

Also, the softdevice must be flashed on to the chip.

By compiling the following main.c code, I was able to get a response from the SoftDevice and print the value over UART.

#include <stdio.h>
#include "softdevice_handler.h"

int main(void)
{
    puts("Hello World!");
    uint8_t a;
    uint16_t b;
    char ret = sd_ble_evt_get(&a,&b);
    printf("output %i\n",ret);
    return 0;
}

If it is possible to use the whole BLE stack I don't know, I guess you just have to try.