Running CAN-BUS Sample with different shield (NRF52840DK & Seeed CAN BUS Shield V2.0)

[ejromero2]

Hi All, 

Im very new to this how firmware space and would love some help.

Currently i have a NRF52840 DK Board with a Seeed Canbus shield. (CAN-BUS Shield V2.0 | Seeed Studio Wiki)

From what i have read is very similar to the DFROBOT CanBus Shield. (Only changing the default pinout for the CS from D10 to D9)

- I have been able to succesfully comple and flash the firmware but i get the following error :

Error starting CAN controller [-5]

I have tried modifying the dfrobot_can_bus_v2_0.overlay to make it work with my seeed shield.  (changing the CS-GPIOS to 15 (D9) instead of 16 (D10).

The error remains the same, and i dont really know how to get a little bit more information to progress on this.

Im trying to run this sample: zephyr/samples/drivers/can/counter at main · zephyrproject-rtos/zephyr (github.com)

[ovrebekk]

Hi Efrain

Error -5 means there is some communication issue with the board. 

Do you know if the board is able to run at 3V? 
The supply and GPIO voltage of the nRF52840DK is around 3V, while many Arduino shields require 5V supply. 

Have you probed the SPI lines to see if there is any activity when the code runs? 
If not it could point to some configuration issue in your project. 

Could you share the overlay with me? 

Best regards
Torbjørn

[ejromero2]

Hi there,

Thanks for the answer:

I only changed the cs-pios to 15 to make it in line with the seeed information.

/*
 * Copyright (c) 2019 Karsten Koenig
 *
 * SPDX-License-Identifier: Apache-2.0
 */

&arduino_spi {
	status = "okay";
	cs-gpios = <&arduino_header 15 GPIO_ACTIVE_LOW>; /* D9 */

	mcp2515_dfrobot_can_bus_v2_0: can@0 {
		compatible = "microchip,mcp2515";
		spi-max-frequency = <1000000>;
		int-gpios = <&arduino_header 8 GPIO_ACTIVE_LOW>; /* D2 */
		status = "okay";
		reg = <0x0>;
		osc-freq = <16000000>;
		bus-speed = <125000>;
		sjw = <1>;
		sample-point = <875>;

		can-transceiver {
			max-bitrate = <1000000>;
		};
	};
};




/ {
	chosen {
		zephyr,canbus = &mcp2515_dfrobot_can_bus_v2_0;
	};
};

I get the following logging info:

[00:00:00.476,654] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/0
uart:~$ Error starting CAN control--- 431 messages dropped ---
[00:00:00.499,145] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len 0x2000487f/1
[00:00:00.499,176] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/0
[00:00:00.499,206] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len (nil)/0
[00:00:00.499,237] <dbg> spi_nrfx_spi: finish_transaction: Transaction finished with status 0
[00:00:00.499,389] <dbg> spi_nrfx_spi: spi_context_buffers_setup: tx_bufs 0x20004838 - rx_bufs 0x20004840 - 1
[00:00:00.499,420] <dbg> spi_nrfx_spi: spi_context_buffers_setup: current_tx 0x20004848 (2), current_rx 0x20004858 (2), tx buf/len 0x20004834/2, rx buf/len (nil)/2
[00:00:00.499,481] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/1
[00:00:00.499,511] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len 0x2000487f/1
[00:00:00.499,542] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/0
[00:00:00.499,572] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len (nil)/0
[00:00:00.499,603] <dbg> spi_nrfx_spi: finish_transaction: Transaction finished with status 0
[00:00:00.499,755] <dbg> spi_nrfx_spi: spi_context_buffers_setup: tx_bufs 0x20004838 - rx_bufs 0x20004840 - 1
[00:00:00.499,786] <dbg> spi_nrfx_spi: spi_context_buffers_setup: current_tx 0x20004848 (2), current_rx 0x20004858 (2), tx buf/len 0x20004834/2, rx buf/len (nil)/2
[00:00:00.499,847] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/1
[00:00:00.499,877] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len 0x2000487f/1
[00:00:00.499,908] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/0
[00:00:00.499,938] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len (nil)/0
[00:00:00.499,969] <dbg> spi_nrfx_spi: finish_transaction: Transaction finished with status 0
[00:00:00.500,122] <dbg> spi_nrfx_spi: spi_context_buffers_setup: tx_bufs 0x20004838 - rx_bufs 0x20004840 - 1
[00:00:00.500,152] <dbg> spi_nrfx_spi: spi_context_buffers_setup: current_tx 0x20004848 (2), current_rx 0x20004858 (2), tx buf/len 0x20004834/2, rx buf/len (nil)/2
[00:00:00.500,213] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/1
[00:00:00.500,244] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len 0x2000487f/1
[00:00:00.500,274] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/0
[00:00:00.500,305] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len (nil)/0
[00:00:00.500,335] <dbg> spi_nrfx_spi: finish_transaction: Transaction finished with status 0
[00:00:00.500,518] <dbg> spi_nrfx_spi: spi_context_buffers_setup: tx_bufs 0x20004838 - rx_bufs 0x20004840 - 1
[00:00:00.500,549] <dbg> spi_nrfx_spi: spi_context_buffers_setup: current_tx 0x20004848 (2), current_rx 0x20004858 (2), tx buf/len 0x20004834/2, rx buf/len (nil)/2
[00:00:00.500,579] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/1
[00:00:00.500,610] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len 0x2000487f/1
[00:00:00.500,640] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/0
[00:00:00.500,671] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len (nil)/0
[00:00:00.500,701] <dbg> spi_nrfx_spi: finish_transaction: Transaction finished with status 0
[00:00:00.500,885] <dbg> spi_nrfx_spi: spi_context_buffers_setup: tx_bufs 0x20004838 - rx_bufs 0x20004840 - 1
[00:00:00.500,915] <dbg> spi_nrfx_spi: spi_context_buffers_setup: current_tx 0x20004848 (2), current_rx 0x20004858 (2), tx buf/len 0x20004834/2, rx buf/len (nil)/2
[00:00:00.500,946] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/1
[00:00:00.500,976] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len 0x2000487f/1
[00:00:00.501,037] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/0
[00:00:00.501,037] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len (nil)/0
[00:00:00.501,068] <dbg> spi_nrfx_spi: finish_transaction: Transaction finished with status 0
[00:00:00.501,251] <dbg> spi_nrfx_spi: spi_context_buffers_setup: tx_bufs 0x20004838 - rx_bufs 0x20004840 - 1
[00:00:00.501,281] <dbg> spi_nrfx_spi: spi_context_buffers_setup: current_tx 0x20004848 (2), current_rx 0x20004858 (2), tx buf/len 0x20004834/2, rx buf/len (nil)/2
[00:00:00.501,312] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/1
[00:00:00.501,342] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len 0x2000487f/1
[00:00:00.501,403] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/0
[00:00:00.501,403] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len (nil)/0
[00:00:00.501,434] <dbg> spi_nrfx_spi: finish_transaction: Transaction finished with status 0
[00:00:00.501,617] <dbg> spi_nrfx_spi: spi_context_buffers_setup: tx_bufs 0x20004838 - rx_bufs 0x20004840 - 1
[00:00:00.501,647] <dbg> spi_nrfx_spi: spi_context_buffers_setup: current_tx 0x20004848 (2), current_rx 0x20004858 (2), tx buf/len 0x20004834/2, rx buf/len (nil)/2
[00:00:00.501,678] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/1
[00:00:00.501,708] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len 0x2000487f/1
[00:00:00.501,770] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/0
[00:00:00.501,770] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len (nil)/0
[00:00:00.501,800] <dbg> spi_nrfx_spi: finish_transaction: Transaction finished with status 0
[00:00:00.501,983] <dbg> spi_nrfx_spi: spi_context_buffers_setup: tx_bufs 0x20004838 - rx_bufs 0x20004840 - 1
[00:00:00.502,014] <dbg> spi_nrfx_spi: spi_context_buffers_setup: current_tx 0x20004848 (2), current_rx 0x20004858 (2), tx buf/len 0x20004834/2, rx buf/len (nil)/2
[00:00:00.502,075] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/1
[00:00:00.502,105] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len 0x2000487f/1
[00:00:00.502,136] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/0
[00:00:00.502,166] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len (nil)/0
[00:00:00.502,197] <dbg> spi_nrfx_spi: finish_transaction: Transaction finished with status 0
[00:00:00.502,349] <dbg> spi_nrfx_spi: spi_context_buffers_setup: tx_bufs 0x20004838 - rx_bufs 0x20004840 - 1
[00:00:00.502,410] <dbg> spi_nrfx_spi: spi_context_buffers_setup: current_tx 0x20004848 (2), current_rx 0x20004858 (2), tx buf/len 0x20004834/2, rx buf/len (nil)/2
[00:00:00.502,441] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/1
[00:00:00.502,471] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len 0x2000487f/1
[00:00:00.502,502] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/0
[00:00:00.502,532] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len (nil)/0
[00:00:00.502,563] <dbg> spi_nrfx_spi: finish_transaction: Transaction finished with status 0
[00:00:00.502,777] <dbg> spi_nrfx_spi: spi_context_buffers_setup: tx_bufs 0x20004838 - rx_bufs 0x20004840 - 1
[00:00:00.502,807] <dbg> spi_nrfx_spi: spi_context_buffers_setup: current_tx 0x20004848 (2), current_rx 0x20004858 (2), tx buf/len 0x20004834/2, rx buf/len (nil)/2
[00:00:00.502,838] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/1
[00:00:00.502,868] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len 0x2000487f/1
[00:00:00.502,899] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/0
[00:00:00.502,929] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len (nil)/0
[00:00:00.502,960] <dbg> spi_nrfx_spi: finish_transaction: Transaction finished with status 0
[00:00:00.503,112] <dbg> spi_nrfx_spi: spi_context_buffers_setup: tx_bufs 0x20004838 - rx_bufs 0x20004840 - 1
[00:00:00.503,173] <dbg> spi_nrfx_spi: spi_context_buffers_setup: current_tx 0x20004848 (2), current_rx 0x20004858 (2), tx buf/len 0x20004834/2, rx buf/len (nil)/2
[00:00:00.503,204] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/1
[00:00:00.503,234] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len 0x2000487f/1
[00:00:00.503,265] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/0
[00:00:00.503,295] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len (nil)/0
[00:00:00.503,326] <dbg> spi_nrfx_spi: finish_transaction: Transaction finished with status 0
[00:00:00.503,540] <dbg> spi_nrfx_spi: spi_context_buffers_setup: tx_bufs 0x20004838 - rx_bufs 0x20004840 - 1
[00:00:00.503,570] <dbg> spi_nrfx_spi: spi_context_buffers_setup: current_tx 0x20004848 (2), current_rx 0x20004858 (2), tx buf/len 0x20004834/2, rx buf/len (nil)/2
[00:00:00.503,601] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/1
[00:00:00.503,631] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len 0x2000487f/1
[00:00:00.503,662] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/0
[00:00:00.503,692] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len (nil)/0
[00:00:00.503,723] <dbg> spi_nrfx_spi: finish_transaction: Transaction finished with status 0
[00:00:00.503,875] <dbg> spi_nrfx_spi: spi_context_buffers_setup: tx_bufs 0x20004838 - rx_bufs 0x20004840 - 1
[00:00:00.503,936] <dbg> spi_nrfx_spi: spi_context_buffers_setup: current_tx 0x20004848 (2), current_rx 0x20004858 (2), tx buf/len 0x20004834/2, rx buf/len (nil)/2
[00:00:00.503,967] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/1
[00:00:00.503,997] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len 0x2000487f/1
[00:00:00.504,058] <dbg> spi_nrfx_spi: spi_context_update_tx: tx buf/len (nil)/0
[00:00:00.504,089] <dbg> spi_nrfx_spi: spi_context_update_rx: rx buf/len (nil)/0
[00:00:00.504,089] <dbg> spi_nrfx_spi: finish_transaction: Transaction finished with status 0
[00:00:00.504,150] <err> can_mcp2515: Timeout trying to set MCP2515 operation mode
[00:00:00.504,180] <err> can_mcp2515: Failed to set the mode [-5]
uart:~$

im not quite sure about the power question.  i have tried to put some extra sensors on the 3.3 output of the shield and that sensor works just fine. (but then again im guessing is just the direct line from the nrf).

[ovrebekk]

Hi Sofia

Sorry for the missing response from my side. I see similar issues on my side, but unfortunately I haven't really had time to investigate it further. Next week I am on travel, so I will have to follow this up when I'm back in office the second week of June. 

Again sorry for the delay, and if you discover anything interesting in the mean time please update the case. 

Best regards
Torbjørn

[smh02]

Hi Torbjørn

Don't worry, I appreciate your time and I'll be waiting for you when you get back. If I get a new result I will be commenting to you.

Regards

[Elfving]

Hello Sofia,

Unfortunately Tobjørn won't have the time to continue the case, but I will take over. 

I see its been 3 months since you last spoke. Has there any update on this case from your side?

Regards,

Elfving

[ejromero2]

hi there. yes. while i dont have the exact details, Sofia managed to get it working. As Tobjørn mentioned the issue was input voltage between the NRF and the CanBus Shield. so the solution if im not mistaken was to indivisually power both devices and use a voltage control to make sure the signals where on the expected  numbers

[Elfving]

Great! Glad to hear it! Sorry about the lack of responsiveness from us on this case.

Feel free to create a new ticket if anything else pops up, and hopefully the responsiveness will be better then.

Regards and have a good week-end!

Elfving