Triyng to use a MPRLS 0015PA0000SAB sensor with nrf5340dk

RE: Triyng to use a MPRLS 0015PA0000SAB sensor with nrf5340dk

Kazi Afroza Sultana — Tue, 07 Jan 2025 14:40:15 GMT

Hello,

''Only other pins that I have connected to the nrf controller are those for the honeywell mpr pressure sensor that uses I2C, those pins are only connected to the I2C datalines (P103 and P102) so it shouldnt be overlapping with the SPI datalines.''

Could you please elaborate this?

The SPI shares registers and other resources with other peripherals that have the same ID as the SPI. Therefore, the user must disable all peripherals that have the same ID as the SPI before the SPI can be configured and used. So, it is not about i2c have dedicated pins but also you need to chcek if ay other peripherals share the same pins as SPI.

Disabling a peripheral that has the same ID as the SPI will not reset any of the registers that are shared with the SPI. It is therefore important to configure all relevant SPI registers explicitly to secure that it operates correctly.

Which Pins are used for SPI0 peripheral? Can you show me the pincontrol file?

This is the default pin selection of nRF5340 (nrf5340dk_nrf5340_cpunet-pinctrl.dtsi)

This is the documentation of pin assignments of nRF5340 https://docs.nordicsemi.com/bundle/ps_nrf5340/page/chapters/pin.html.

RE: Triyng to use a MPRLS 0015PA0000SAB sensor with nrf5340dk

PatTheTrickster — Mon, 23 Dec 2024 16:10:54 GMT

This is my prj.conf file

#
# Copyright (c) 2024 Nordic Semiconductor
#
# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
#

CONFIG_LOG=y
CONFIG_SERIAL=n
# Enable the ADC API and driver
CONFIG_ADC=y
CONFIG_SPI=y
# Add the I2C Drivers and Show floating points w/digits
CONFIG_I2C=y
CONFIG_PINCTRL=y 
CONFIG_CBPRINTF_FP_SUPPORT=y
CONFIG_GPIO=y
CONFIG_SENSOR=y

In my zephyr.dts file this is the definition that is generated for spi0

			spi0: spi@8000 {
				compatible = "nordic,nrf-spim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0x8000 0x1000 >;
				interrupts = < 0x8 0x1 >;
				max-frequency = < 0x7a1200 >;
				easydma-maxcnt-bits = < 0x10 >;
				status = "okay";
				pinctrl-0 = < &spi0_default >;
				pinctrl-1 = < &spi0_sleep >;
				pinctrl-names = "default", "sleep";
				cs-gpios = < &gpio0 0x19 0x1 >;
				mprls_spi: mprls_spi@0 {
					compatible = "honeywell,mprls_spi";
					reg = < 0x0 >;
					spi-max-frequency = < 0xf4240 >;
					duplex = < 0x0 >;
				};
			};

And I also wanted to the include the I2c1 that is generated since that is my other sensor

			i2c1: arduino_i2c: i2c@9000 {
				compatible = "nordic,nrf-twim";
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				reg = < 0x9000 0x1000 >;
				clock-frequency = < 0x186a0 >;
				interrupts = < 0x9 0x1 >;
				status = "okay";
				pinctrl-0 = < &i2c1_default >;
				pinctrl-1 = < &i2c1_sleep >;
				pinctrl-names = "default", "sleep";
				mprls: mprls@18 {
					compatible = "i2c-device";
					reg = < 0x18 >;
					label = "mprls";
					pinctrl-0 = < &i2c1_default >;
					pinctrl-1 = < &i2c1_sleep >;
					int_gpios = < &gpio0 0x1b 0x11 >;
					status = "okay";
					zephyr,concat-buf-size = < 0x80 >;
				};
			};

And the ADC sensor that is generated aswell

			adc: adc@e000 {
				compatible = "nordic,nrf-saadc";
				reg = < 0xe000 0x1000 >;
				interrupts = < 0xe 0x1 >;
				status = "okay";
				#io-channel-cells = < 0x1 >;
				#address-cells = < 0x1 >;
				#size-cells = < 0x0 >;
				phandle = < 0x17 >;
				channel@0 {
					reg = < 0x0 >;
					zephyr,gain = "ADC_GAIN_1";
					zephyr,reference = "ADC_REF_INTERNAL";
					zephyr,acquisition-time = < 0x0 >;
					zephyr,input-positive = < 0x1 >;
					zephyr,resolution = < 0xc >;
				};
			};

Only other pins that I have connected to the nrf controller are those for the honeywell mpr pressure sensor that uses I2C, those pins are only connected to the I2C datalines (P103 and P102) so it shouldnt be overlapping with the SPI datalines.

Let me know if this is enough information to see the problem or if there is something else that I should be checking out on, Thanks!

RE: Triyng to use a MPRLS 0015PA0000SAB sensor with nrf5340dk

Kazi Afroza Sultana — Sun, 22 Dec 2024 21:03:47 GMT

Hello,

How does your prj.conf file like? Have you checked if any other pins of other peripherals are overlapped with the SPI pins which connected to Honeywell sensors?

Can you check the zephyr.dts file from build folder if the SPI pins are defined properly?

Thanks.

BR
Kazi