Zephyr with WNC-M14A2A not compiling

[chris-schra]

Hi, it seems like there are missing defines when using WNC-M14A2A:
zephyr/include/generated/generated_dts_board.h:185:50: error: 'NORDIC_NRF_UARTE_40028000_WNCM14A2A_MDM_KEEP_AWAKE_GPIOS_PIN' undeclared here (not in a function)

(just an example)

[mike-scott]

@derchrismakaio Which board were you testing this with?

[chris-schra]

I'm porting it to nrf52_pca10040. I think it should work with CONFIG_UART_CONSOLE=n.

I've changed uart0 in nrf52_pca10040.dts:

_&uart0 {
status = "ok";
compatible = "nordic,nrf-uart";
current-speed = <115200>;

#ifdef CONFIG_MODEM_WNCM14A2A
wncm14a2a {
	compatible = "wnc,m14a2a";
	label = "wncm14a2a";
	mdm-boot-mode-sel-gpios = <&gpio0 2 0>;
	mdm-power-gpios = <&gpio0 3 0>;
	mdm-keep-awake-gpios = <&gpio0 7 0>;
	mdm-reset-gpios = <&gpio0 10 0>;
	mdm-shld-trans-ena-gpios = <&gpio0 11 0>;
	status = "ok";
};
#endif

};_

And, of course, I've enabled the modem via menu

Added to prj.conf of lwm2m_client sample:
CONFIG_CONSOLE_SHELL=n
CONFIG_UART_CONSOLE=n
CONFIG_MODEM_RECEIVER_MAX_CONTEXTS=1
CONFIG_MODEM_WNCM14A2A=y

Edit: Giving up trying to format the code for this post, sorry :/

[mike-scott]

@derchrismakaio I would follow the changes here: 65af15b#diff-115b4ae91af8f499ac18e8b572738d7a but apply them to boards/arm/nrf52_pca10040.

Specifically, the error you're seeing is related to the dts.fixup file changes in the above patch.

[mike-scott]

Ah, nevermind.. I see the issue.
You'll need to also change this in the prj.conf:
CONFIG_UART_0_NRF_UART=n
CONFIG_UART_0_NRF_UARTE=y

nrf52_pca10040 defaults to using the UART peripheral not UARTE which is how I setup the modem driver on nrf52840_pca10056.

[chris-schra]

yepp, funny, I did that ;) but now I get

Error: Aborting due to non-whitelisted Kconfig warning 'warning: the choice symbol UART_0_NRF_UARTE (defined at drivers/serial/Kconfig.nrfx:34) is selected by the following symbols, which has no effect:

• MODEM_WNCM14A2A (defined at drivers/modem/Kconfig:42)'

[chris-schra]

whooops, sorry, that was because of a change in modem's Kconfig:

from
select UART_1_NRF_UARTE if SOC_NRF52840
select UART_1_NRF_FLOW_CONTROL if SOC_NRF52840

to

select UART_1_NRF_UARTE if SOC_NRF52840
select UART_0_NRF_UARTE if SOC_NRF52832
select UART_1_NRF_FLOW_CONTROL if SOC_NRF52840
select UART_0_NRF_FLOW_CONTROL if SOC_NRF52832

Apologies, these are my first 4 hours with Zephyr ;)

[chris-schra]

still, it fails to compile because of the undefined "macros", starting with:
zephyr/include/generated/generated_dts_board.h:199:54: error: 'NORDIC_NRF_UARTE_40028000_WNCM14A2A_MDM_BOOT_MODE_SEL_GPIOS_CONTROLLER' undeclared here (not in a function)
#define CONFIG_WNCM14A2A_GPIO_MDM_BOOT_MODE_SEL_NAME NORDIC_NRF_UARTE_40028000_WNCM14A2A_MDM_BOOT_MODE_SEL_GPIOS_CONTROLLER

prj.conf lines added:

CONFIG_CONSOLE_SHELL=y
CONFIG_UART_CONSOLE=y
CONFIG_MODEM_RECEIVER_MAX_CONTEXTS=1
CONFIG_MODEM_WNCM14A2A=y
CONFIG_UART_0_NRF_UART=n
CONFIG_UART_0_NRF_UARTE=y

going to bed now, phew, maybe it's easier to program it to a nrf52840 DK tomorrow in office

[mike-scott]

@derchrismakaio I'll try your setup for nrf52_pca10040 in a bit, and see what's going on.

[chris-schra]

@mike-scott tried to flash a pca10056 but I have no idea about the pin mapping - how do I find out what pin 46 on the board is? I've looked in Nordic's HAL but they're just saying to use the pin map macro, which doesn't help in this case, obviously :)

[mike-scott]

@derchrismakaio Here's the pin mappings for nRF52840:
[P1.15/P0.47] MDM_UART2_CTS
[P1.14/P0.46] MDM_UART2_TX
[P1.13/P0.45] MDM_UART2_RX
[P1.12/P0.44] MDM_UART2_RTS
[P1.11/P0.43] SHIELD_3V3_1V8_SIG_TRANS_EN
[P1.10/P0.42] MDM_RESET
[P1.07/P0.39] MDM_WAKEUP_EN
[P1.03/P0.35] MDM_POWER_ON
[P1.02/P0.34] MDM_BOOT_MODE_SEL (on powerup, 0 = boot mode, 1 = normal boot)

You'll note that there are both P0 and P1 pin #'s as technically the pins are the P1 GPIO block, but the way the GPIO driver is setup, you can access them via P0 by using #'s higher than pin 31.

[mike-scott]

@derchrismakaio I was able to get the nrf52_pca10040 working with JLinkRTTClient and this diff:
https://hastebin.com/ijunafeqex.diff

Here's a boot log: https://hastebin.com/oquleruzuf.log

NOTE: I found that we have a bug when using uart_fifo_fill() on the nRF52. I'll need to debug that and see what I'm doing wrong there. It works on the FRDM_K64F.

[mike-scott]

Oh and I applied a local patch that I have yet to submit to the master branch:
https://hastebin.com/ematojiqet.patch