Device tree setting problem

RE: Device tree setting problem

Simonr — Mon, 15 Apr 2024 13:35:07 GMT

Hi Tina

You should be able to use any similar SPI driver as a template for your new one and look at how SPIOP is set up in other SPI sensors. I'm not intimately familiar with this specific device, but this define looks okay. Some trial and error must be expected when creating a new sensor for a project from scratch though. Please give it a shot and let me know if you run into any specific issues.

Best regards,

Simon

RE: Device tree setting problem

yithwe — Fri, 12 Apr 2024 08:55:21 GMT

Hi Simonr

Thanks for your reply, now I use upper ticket you provide, connect new sensor, for this how can I know the defult setting for SPI mode or SPI_MODE_CPOL and SPI_MODE_CPHA value? how can I config for SPI mode as 3?

can I set as below?

#define SPIOP SPI_WORD_SET(8) | SPI_TRANSFER_MSB | SPI_MODE_CPOL | SPI_MODE_CPHA

Best Regards

Tina

RE: Device tree setting problem

Simonr — Fri, 12 Apr 2024 07:37:12 GMT

Hi Tina

Please check out the answer from Raoul in this ticket on how to add a new sensor to a sample project.

Best regards,

Simon

RE: Device tree setting problem

yithwe — Thu, 11 Apr 2024 08:35:49 GMT

Hi Simonr

Thanks for your suggestion, For new sensor or other board how to create for *.yaml file? do you have any training course for this parts?

If I want to create for ST-F412ZG board's *.yaml, what details I need to precaution?

Best Regards

Tina

RE: Device tree setting problem

Simonr — Thu, 11 Apr 2024 08:02:43 GMT

I'm not sure I understand the question here, the default settings for the secure and non-secure builds should be the same in terms on pin configs. To see all pin configs I would recommend opening the nRF DeviceTree extension in VS Code to get a visual editor showing you what every pin is configured as.

Best regards,

Simon

RE: Device tree setting problem

yithwe — Wed, 10 Apr 2024 08:35:23 GMT

Hi Simonr

Thanks for your reply, another question is where can I get the all SPI4 gpio pin default setting detail and on the vscode "Edit Build Confirguration" for board nrf7002_nrf5340_cpuapp_ns detail?As below picture.I want to config CPOL and CPHA for SPI4, need some reference.Others I want to compare for difference between board selection for nrf7002_nrf5340_cpuapp & nrf7002_nrf5340_cpuapp_ns.

Best Regards

Tina

RE: Device tree setting problem

Simonr — Wed, 10 Apr 2024 06:36:41 GMT

If you don't see any activity on P0.08 specifically I would double check that SB11 on the DK is properly shorted, as I don't see what the problem should be if you otherwise follow the SPI lesson on the DevAcademy.

Best regards,

Simon

RE: Device tree setting problem

yithwe — Tue, 09 Apr 2024 01:10:41 GMT

Hi Simonr

wasn't the point to have the SPI4 at a higher frequency than the standard SPI speed?

Now is testing with ST:LIS2HH12 sensor connection and transmit/recieve , for this sensor the max frequency is 8MHz, but we will try to use high speed with other device connection in future, so need to testing spi4 with low frequency temporary.

For the picture I meant a photo of the physical connection so I could make sure it looks like it's connected correctly.

Connection is correct, but the pin function is not work correctly.For P0.08(SCK) no any waveforms when the activity is start, but the (CS)P0.11 has waveforms by use oscilloscope and logic analyzer.So the result of read/write byte for sensor is no any values as upper, What configuration or detail did I miss for this case?

Best Regards

Tina

RE: Device tree setting problem

Simonr — Mon, 08 Apr 2024 13:55:54 GMT

I see you've set the SPI max frequency to 8MHz here, wasn't the point to have the SPI4 at a higher frequency than the standard SPI speed? That being said I don't see a specific issue with this overlay file. For the picture I meant a photo of the physical connection so I could make sure it looks like it's connected correctly.

Best regards,

Simon

RE: Device tree setting problem

yithwe — Sat, 06 Apr 2024 06:25:41 GMT

Hi Simonr

Attached file is for my overlay file, and chip visual picture, Thanks.

devzone.nordicsemi.com/.../2570.nrf7002dk_5F00_nrf5340_5F00_cpuapp.overlay

Best Regards

Tina

RE: Device tree setting problem

Simonr — Thu, 04 Apr 2024 06:48:39 GMT

How have you added the SPI pins you're using in your overlay file? You should use pins (P0.08-P0.12) to take advantage of the SPIM4 instance, and that needs to be reflected in your overlay file as explained in steps 2.1 and 2.2 of the Academy course you're referring to. Also, please show me a picture of how you have connected the BMP sensor to your nRF7002DK exactly, as something isn't set up correctly if you're not able to write the addresses correctly.

Best regards,

Simon

RE: Device tree setting problem

yithwe — Wed, 03 Apr 2024 07:05:44 GMT

Hi Simonr

For this log,I really to write value to register as below.but when write to registers no any error message for write fail info.sometime registers value is "Zero" when I was solid connection the board and sensor.

Define register

#define CTRL3 0x22

#define CTRL4 0x23

#define CTRL5 0x24

#define CTRL6 0x25

#define CTRL7 0x26

Write function

static int lis_write_reg(uint8_t reg, uint8_t value)
{
int err;

/* STEP 5.1 - declare a tx buffer having register address and data */
uint8_t tx_buf[] = {(reg & 0x7F), value};
struct spi_buf tx_spi_buf = {.buf = tx_buf, .len = sizeof(tx_buf)};
struct spi_buf_set tx_spi_buf_set = {.buffers = &tx_spi_buf, .count = 1};
/* STEP 5.2 - call the spi_write_dt function with SPISPEC to write buffers */
err = spi_write_dt(&spispec, &tx_spi_buf_set);
if (err < 0) {
LOG_ERR("spi_write_dt() failed, err %d", err);
return err;
}
LOG_ERR("spi_write_dt() SUCCESS, err %d", err);
return 0;
}

In main

{

lis_write_reg(CTRL3, 0x9F);

lis_write_reg(CTRL4, 0x9F);

lis_write_reg(CTRL7, 0x9F);

}

Log for solid connection the board and sensor

*** Booting nRF Connect SDK v2.5.2 ***
[00:00:00.250,366] <inf> Lesson5_Exercise1: -------------------------------------------------------------
[00:00:00.250,366] <inf> Lesson5_Exercise1: lis_read_calibrationdata: Reading from calibration registers:
[00:00:00.250,396] <inf> Lesson5_Exercise1: Reg[0x0b] 2 Bytes read: Param T1 = 0
[00:00:00.300,842] <inf> Lesson5_Exercise1: Reg[0x0f] = 0x00
[00:00:00.321,044] <inf> Lesson5_Exercise1: Reg[0x1e] = 0x00
[00:00:00.341,217] <inf> Lesson5_Exercise1: Reg[0x1f] = 0x00
[00:00:00.361,389] <inf> Lesson5_Exercise1: Reg[0x20] = 0x00
[00:00:00.381,591] <inf> Lesson5_Exercise1: Reg[0x21] = 0x00
[00:00:00.401,763] <inf> Lesson5_Exercise1: Reg[0x22] = 0x00
[00:00:00.421,936] <inf> Lesson5_Exercise1: Reg[0x23] = 0x00
[00:00:00.442,108] <inf> Lesson5_Exercise1: Reg[0x24] = 0x00
[00:00:00.462,310] <inf> Lesson5_Exercise1: Reg[0x25] = 0x00
[00:00:00.482,482] <inf> Lesson5_Exercise1: Reg[0x26] = 0x00
[00:00:00.502,655] <inf> Lesson5_Exercise1: Reg[0x27] = 0x00
[00:00:00.522,827] <inf> Lesson5_Exercise1: Reg[0x28] = 0x00
[00:00:00.543,029] <inf> Lesson5_Exercise1: Reg[0x26] = 0x00
[00:00:00.563,201] <inf> Lesson5_Exercise1: Reg[0x27] = 0x00
[00:00:00.583,404] <inf> Lesson5_Exercise1: Reg[0x28] = 0x00
[00:00:00.603,546] <inf> Lesson5_Exercise1: Reg[0x29] = 0x00
[00:00:00.623,748] <inf> Lesson5_Exercise1: Reg[0x2a] = 0x00
[00:00:00.643,920] <inf> Lesson5_Exercise1: Reg[0x2b] = 0x00
[00:00:00.664,093] <inf> Lesson5_Exercise1: Reg[0x2c] = 0x00
[00:00:00.684,265] <inf> Lesson5_Exercise1: Reg[0x2d] = 0x00
[00:00:00.704,467] <inf> Lesson5_Exercise1: Reg[0x2e] = 0x00
[00:00:00.724,548] <inf> Lesson5_Exercise1: -------------------------------------------------------------
[00:00:00.724,578] <inf> Lesson5_Exercise1: Continuously read sensor samples, compensate, and display
[00:00:00.724,639] <inf> Lesson5_Exercise1: uncomp = 0 C
[00:00:01.724,761] <inf> Lesson5_Exercise1: uncomp = 0 C
[00:00:02.724,884] <inf> Lesson5_Exercise1: uncomp = 0 C
[00:00:03.725,097] <inf> Lesson5_Exercise1: uncomp = 0 C

Best Regards

Tina

RE: Device tree setting problem

Simonr — Wed, 03 Apr 2024 06:30:29 GMT

It seems like the registers you're reading are empty, so if nothing is written to these registers, what you're seeing is perfectly normal. What are you writing to the sensor exactly?

Best regards,

Simon

RE: Device tree setting problem

yithwe — Tue, 02 Apr 2024 14:42:50 GMT

Hi Simon

Ｉshort SB11-SB14 and I use https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-5-serial-peripheral-interface-spi/topic/exercise-1-10/ sample code :Interfacing with a sensor over SPI, for connect ST:LIS2HH12 sensor, after I write register and print the registers in main, the result is as below, isn't normal?

[00:00:00.300,811] <inf> Lesson5_Exercise1: bmp_print_registers: Reading all BME280 registers (one by one)
[00:00:00.300,872] <inf> Lesson5_Exercise1: Reg[0x0f] = 0xff
[00:00:00.321,044] <inf> Lesson5_Exercise1: Reg[0x1e] = 0xff
[00:00:00.341,186] <inf> Lesson5_Exercise1: Reg[0x1f] = 0xff
[00:00:00.361,328] <inf> Lesson5_Exercise1: Reg[0x20] = 0xff
[00:00:00.381,469] <inf> Lesson5_Exercise1: Reg[0x21] = 0xff
[00:00:00.401,611] <inf> Lesson5_Exercise1: Reg[0x22] = 0xff
[00:00:00.421,752] <inf> Lesson5_Exercise1: Reg[0x23] = 0xff
[00:00:00.441,894] <inf> Lesson5_Exercise1: Reg[0x24] = 0xff
[00:00:00.462,036] <inf> Lesson5_Exercise1: Reg[0x25] = 0xff
[00:00:00.482,177] <inf> Lesson5_Exercise1: Reg[0x26] = 0xff
[00:00:00.502,349] <inf> Lesson5_Exercise1: Reg[0x27] = 0xff
[00:00:00.522,491] <inf> Lesson5_Exercise1: Reg[0x28] = 0xff
[00:00:00.542,633] <inf> Lesson5_Exercise1: Reg[0x26] = 0xff
[00:00:00.562,774] <inf> Lesson5_Exercise1: Reg[0x27] = 0xff
[00:00:00.582,916] <inf> Lesson5_Exercise1: Reg[0x28] = 0xff
[00:00:00.603,057] <inf> Lesson5_Exercise1: Reg[0x29] = 0xff
[00:00:00.623,199] <inf> Lesson5_Exercise1: Reg[0x2a] = 0xff
[00:00:00.643,341] <inf> Lesson5_Exercise1: Reg[0x2b] = 0x00
[00:00:00.663,482] <inf> Lesson5_Exercise1: Reg[0x2c] = 0x00
[00:00:00.683,624] <inf> Lesson5_Exercise1: Reg[0x2d] = 0x00
[00:00:00.703,796] <inf> Lesson5_Exercise1: Reg[0x2e] = 0x00

Best Regards

Tina

RE: Device tree setting problem

Simonr — Wed, 27 Mar 2024 08:39:20 GMT

Note that there are some specific pins dedicated for high-speed SPI4 (P0.08-P0.12). By default, these are connected to the Flash memory on the nRF7002DK, so you will need to short SB11-SB14 to have these pins available for your sensor when using the DK. Note that this will leave the MX25 disconnected though so it won't be usable unless you get inventive with soldering it onto some other pins on the DK.

Best regards,

Simon

RE: Device tree setting problem

yithwe — Tue, 26 Mar 2024 13:59:04 GMT

Hi Simonr

Thanks for your reply, I need high speed spi4 for my sensor,I try to move Mx25 to spi3, isn't need any precaution?

Best Reagrds

Tina

RE: Device tree setting problem

Simonr — Tue, 26 Mar 2024 13:09:44 GMT

Hi Tina

Yes, it's possible to switch the SPI instance the MX25 uses if you'd like. But is there a specific reason you want the SPI4 instance for the BMP280 sensor? The app core has 5 SPI instances available (SPI0-SPI4) and either of these can be used for the BMP280. If you run both on the same instance, they won't be able to operate at the speed you'd like, so I'd strongly recommend moving either the MX25 or the BMP280 to its own SPI instance.

Best regards,

Simon