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ADC on nRF9160 DK - Example code problems

Hi,

I am trying to get the ADC up and running on the nRF9160 DK. I had a look for example code and the latest I found was here.

https://github.com/Rallare/fw-nrfconnect-nrf/tree/nrf9160_samples/samples/nrf9160/adc/src

Can anyone suggest an alternative?

So, when I run this, I get an error

Secure Boot: MSP_NS 200209b8

Secure Boot: prepare to jump to Non-Secure image

***** BUS FAULT *****

Precise data bus error

BFAR Address: 0x4000e104

***** Hardware exception *****

Current thread ID = 0x200200b4

Faulting instruction address = 0x42612

Fatal fault in essential thread! Spinning...

Looking in the code, there is a comment about setting SSADC to non secure .

I tried this in the Konfg file in the secure_boot application

config SB_NRF_SAADC_NS
bool "ADC is Non-Secure"
default y

But,Im not sure if this is correct.

Would appreciate your help.

Regards,

Rod

Top Replies

RodWatt over 6 years ago in reply to Martin Lesund +1 verified

That worked perfectly! Thanks.

0 Martin Lesund over 6 years ago
Hi Rod,

If you look in the commit for the secure_boot in that repo you can see that there has been added three lines.

/* Configure SAADC as non-secure */ secure_boot_config_peripheral( NRFX_PERIPHERAL_ID_GET(NRF_SAADC_S), 0);

If you add that and reflash you should be good.

Also adding the precompiled .hex if you have any issues: secure_boot.hex

Use nrfjprog to flash the file, with the command: nrfjprog --program secure_boot.hex -f nrf91 --sectorerase -r --verify
0 RodWatt over 6 years ago in reply to Martin Lesund

Hey Martin, thank you for the speedy reply, I will try this (hopefully) later today and let you know, Regards,

Rod
0 RodWatt over 6 years ago in reply to Martin Lesund

Hi Martin,

Sorry, Im missing something obvious here, so obvious I can't see it!

I have copied the source for the secure boot as above, and try to compile using..

cmake -GNinja -DBOARD=nrf9160_pca10090 ..

then, when I run ninja, I get...

Watts-MacBook-Pro:build Watt$ ninja

[26/105] Building C object CMakeFiles/app.dir/src/main.c.obj

FAILED: CMakeFiles/app.dir/src/main.c.obj

ccache /Users/Watt/gnuarmemb/bin/arm-none-eabi-gcc -DBUILD_VERSION=v1.14.0-rc1-1246-g959abdf1c9c9 -DKERNEL -DNRF9160_XXAA -D_FORTIFY_SOURCE=2 -D__ZEPHYR__=1 -I/Users/Watt/zephyrproject/zephyr/kernel/include -I/Users/Watt/zephyrproject/zephyr/arch/arm/include -I/Users/Watt/zephyrproject/zephyr/include -I/Users/Watt/zephyrproject/zephyr/include/drivers -Izephyr/include/generated -I/Users/Watt/zephyrproject/zephyr/soc/arm/nordic_nrf/nrf91 -I/Users/Watt/zephyrproject/zephyr/soc/arm/nordic_nrf/include -I/Users/Watt/zephyrproject/zephyr/lib/libc/minimal/include -I/Users/Watt/zephyrproject/zephyr/ext/hal/cmsis/Include -I/Users/Watt/zephyrproject/zephyr/ext/hal/nordic/nrfx -I/Users/Watt/zephyrproject/zephyr/ext/hal/nordic/nrfx/drivers/include -I/Users/Watt/zephyrproject/zephyr/ext/hal/nordic/nrfx/hal -I/Users/Watt/zephyrproject/zephyr/ext/hal/nordic/nrfx/mdk -I/Users/Watt/zephyrproject/zephyr/ext/hal/nordic/. -isystem /Users/Watt/gnuarmemb/bin/../lib/gcc/arm-none-eabi/7.3.1/include -isystem /Users/Watt/gnuarmemb/bin/../lib/gcc/arm-none-eabi/7.3.1/include-fixed -Os -nostdinc -g -Wall -Wformat -Wformat-security -Wno-format-zero-length -imacros /Users/Watt/SD_Connect/ncs/nrf/samples/nrf9160/secure_boot/build/zephyr/include/generated/autoconf.h -ffreestanding -Wno-main -fno-common -mthumb -mcpu=cortex-m33 -fno-asynchronous-unwind-tables -fno-pie -fno-pic -fno-strict-overflow -Wno-pointer-sign -Wno-unused-but-set-variable -fno-reorder-functions -fno-defer-pop -Werror=implicit-int -Wpointer-arith -ffunction-sections -fdata-sections -mabi=aapcs -march=armv8-m.main+dsp -mcmse -std=c99 -MD -MT CMakeFiles/app.dir/src/main.c.obj -MF CMakeFiles/app.dir/src/main.c.obj.d -o CMakeFiles/app.dir/src/main.c.obj -c ../src/main.c

../src/main.c: In function 'secure_boot_config_peripherals':

../src/main.c:305:26: error: 'NRF_GPIO' undeclared (first use in this function); did you mean 'NRF_GPIOTE'?

   NRFX_PERIPHERAL_ID_GET(NRF_GPIO), 0);

^

../src/main.c:83:23: note: in definition of macro 'NRFX_PERIPHERAL_ID_GET'

(uint8_t)((uint32_t)(base_addr) >> 12)

   ^~~~~~~~~

../src/main.c:305:26: note: each undeclared identifier is reported only once for each function it appears in

   NRFX_PERIPHERAL_ID_GET(NRF_GPIO), 0);

^

../src/main.c:83:23: note: in definition of macro 'NRFX_PERIPHERAL_ID_GET'

(uint8_t)((uint32_t)(base_addr) >> 12)

   ^~~~~~~~~

../src/main.c: In function 'secure_boot_jump':

../src/main.c:377:13: warning: Macro is deprecated

u32_t *vtor_ns = (u32_t *)FLASH_AREA_IMAGE_0_NONSECURE_OFFSET_0;

   ^~~~~~~~~~~~~~~~~~~~~

[35/105] Building C object zephyr/CMakeFiles/zephyr.dir/drivers/timer/nrf_rtc_timer.c.obj

ninja: build stopped: subcommand failed.

Watts-MacBook-Pro:build Watt$

I guess I'm pointing to an old .h file somewhere?

So, then I tried using your .hex file.I was able to program the board successfully with secure boot.

When I try to build the ads code, I get more errors

Watts-MacBook-Pro:build Watt$ ninja

[121/128] Building C object CMakeFiles/app.dir/src/main.c.obj

FAILED: CMakeFiles/app.dir/src/main.c.obj

ccache /Users/Watt/gnuarmemb/bin/arm-none-eabi-gcc -DBUILD_VERSION=v1.14.0-rc1-1246-g959abdf1c9c9 -DKERNEL -DNRF9160_XXAA -DNRF_TRUSTZONE_NONSECURE -D_FORTIFY_SOURCE=2 -D__ZEPHYR__=1 -I/Users/Watt/zephyrproject/zephyr/kernel/include -I/Users/Watt/zephyrproject/zephyr/arch/arm/include -I/Users/Watt/zephyrproject/zephyr/include -I/Users/Watt/zephyrproject/zephyr/include/drivers -Izephyr/include/generated -I/Users/Watt/zephyrproject/zephyr/soc/arm/nordic_nrf/nrf91 -I/Users/Watt/zephyrproject/zephyr/soc/arm/nordic_nrf/include -I/Users/Watt/zephyrproject/zephyr/lib/libc/minimal/include -I/Users/Watt/zephyrproject/zephyr/ext/hal/cmsis/Include -I/Users/Watt/zephyrproject/zephyr/ext/hal/nordic/nrfx -I/Users/Watt/zephyrproject/zephyr/ext/hal/nordic/nrfx/drivers/include -I/Users/Watt/zephyrproject/zephyr/ext/hal/nordic/nrfx/hal -I/Users/Watt/zephyrproject/zephyr/ext/hal/nordic/nrfx/mdk -I/Users/Watt/zephyrproject/zephyr/ext/hal/nordic/. -I/Users/Watt/zephyrproject/zephyr/subsys/net/lib/sockets/. -isystem /Users/Watt/gnuarmemb/bin/../lib/gcc/arm-none-eabi/7.3.1/include -isystem /Users/Watt/gnuarmemb/bin/../lib/gcc/arm-none-eabi/7.3.1/include-fixed -Os -nostdinc -g -Wall -Wformat -Wformat-security -Wno-format-zero-length -imacros /Users/Watt/Documents/Switch_That/Nordic_Semi_Code/ADC_Test/build/zephyr/include/generated/autoconf.h -ffreestanding -Wno-main -fno-common -mthumb -mcpu=cortex-m33 -fno-asynchronous-unwind-tables -fno-pie -fno-pic -fno-strict-overflow -Wno-pointer-sign -Wno-unused-but-set-variable -fno-reorder-functions -fno-defer-pop -Werror=implicit-int -Wpointer-arith -ffunction-sections -fdata-sections -mabi=aapcs -march=armv8-m.main+dsp -std=c99 -MD -MT CMakeFiles/app.dir/src/main.c.obj -MF CMakeFiles/app.dir/src/main.c.obj.d -o CMakeFiles/app.dir/src/main.c.obj -c ../src/main.c

../src/main.c:36:10: error: 'ADC_GAIN' undeclared here (not in a function); did you mean 'ADC_GAIN_8'?

.gain = ADC_GAIN,

^~~~~~~~

ADC_GAIN_8

../src/main.c:37:15: error: 'ADC_REFERENCE' undeclared here (not in a function); did you mean 'ADC_REF_VDD_1'?

.reference = ADC_REFERENCE,

   ^~~~~~~~~~~~~

   ADC_REF_VDD_1

../src/main.c:38:22: error: 'ADC_ACQUISITION_TIME' undeclared here (not in a function); did you mean 'ADC_ACQ_TIME'?

.acquisition_time = ADC_ACQUISITION_TIME,

^~~~~~~~~~~~~~~~~~~~

ADC_ACQ_TIME

../src/main.c:39:16: error: 'ADC_1ST_CHANNEL_ID' undeclared here (not in a function)

.channel_id = ADC_1ST_CHANNEL_ID,

^~~~~~~~~~~~~~~~~~

../src/main.c:41:20: error: 'ADC_1ST_CHANNEL_INPUT' undeclared here (not in a function); did you mean 'ADC_1ST_CHANNEL_ID'?

.input_positive = ADC_1ST_CHANNEL_INPUT,

^~~~~~~~~~~~~~~~~~~~~

ADC_1ST_CHANNEL_ID

../src/main.c: In function 'adc_sample':

../src/main.c:56:17: error: 'ADC_RESOLUTION' undeclared (first use in this function)

   .resolution = ADC_RESOLUTION,

   ^~~~~~~~~~~~~~

../src/main.c:56:17: note: each undeclared identifier is reported only once for each function it appears in

ninja: build stopped: subcommand failed.

Watts-MacBook-Pro:build Watt$

Again, looks like eIm pointing to an incorrect .h file?

I went through the errors and replaced the definitions .n the adc code, for example, replaced ADC_1ST_CHANNEL_INPUT with ADC_1ST_CHANNEL_ID. I can get the code to build but get the bus error again, but I guess Im just working round the main problem of my include files?

Sorry for being stupid here, Im a h/w guy trying to make it in a s/w world!

Rod
0 Martin Lesund over 6 years ago in reply to RodWatt

Hi Rod,

Have you sourced the zephyr-env.sh in the https://github.com/NordicPlayground/fw-nrfconnect-zephyr repo, since it looks like compiler struggles with finding the definitions which are in https://github.com/NordicPlayground/fw-nrfconnect-zephyr/tree/master/ext/hal/nordic/nrfx/mdk file.

You should have this structure:
0 RodWatt over 6 years ago in reply to Martin Lesund

Hi Martin, I am pretty sure I have this set up OK, I cant be sure as Im away on business away from my development machine at this minute but will check on my return. If not, I will reinstall

Regards,

Rod