nrf52dk not able to build the SPI project.

Question

Hello, 
 We are using nrf52dk, with zephyr OS also we have done the setup in VS code with extension. 
 Toolchain version: v2.9.0 
 SDK version: 3.7.99-ncs2, these all came in extension of nrf connect in vs code. 
 Expectation: We need to communicate the sensor over SPI1 with MAX30001 device. 
 Problem: I am not able to build the project. getting error of SPI node. 
 Build error logs: 
 // FATAL ERROR: command exited with status 1: 'C:
cs	oolchains\b620d30767\opt\bin\cmake.EXE' --build C:/nrf52/my_sample/sample_SPI/build 
 Can anyone please help me on this. As I am new on this. Please guide us how to solve this issue.

Sagar Patel · Accepted Answer

I have attached the logs 
 FAILED: CMakeFiles/app.dir/src/main.c.obj 
C:/nrf52/my_sample/sample_SPI/build/sample_SPI/zephyr/include/generated/zephyr/devicetree_generated.h:12836:42: error: 'DT_N_S_soc_S_spi_40004000_S_spi_dev_a_0_P_frame_format' undeclared here (not in a function); did you mean 'DT_N_S_soc_S_spi_40004000_S_spi_dev_a_0_P_reg'?
12836 | #define DT_N_NODELABEL_reg_my_spi_master DT_N_S_soc_S_spi_40004000_S_spi_dev_a_0
 | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
C:/ncs/v2.9.0/zephyr/include/zephyr/devicetree.h:4879:29: note: in definition of macro 'DT_CAT3'
 4879 | #define DT_CAT3(a1, a2, a3) a1 ## a2 ## a3
 | ^~
C:/ncs/v2.9.0/zephyr/include/zephyr/drivers/spi.h:352:25: note: in expansion of macro 'DT_PROP'
 352 | DT_PROP(node_id, frame_format) | \
 | ^~~~~~~
C:/ncs/v2.9.0/zephyr/include/zephyr/drivers/spi.h:404:27: note: in expansion of macro 'SPI_CONFIG_DT'
 404 | .config = SPI_CONFIG_DT(node_id, operation_, delay_) \
 | ^~~~~~~~~~~~~
C:/nrf52/my_sample/sample_SPI/src/main.c:10:45: note: in expansion of macro 'SPI_DT_SPEC_GET'
 10 | static const struct spi_dt_spec spi1_spec = SPI_DT_SPEC_GET(
 | ^~~~~~~~~~~~~~~
C:/ncs/v2.9.0/zephyr/include/zephyr/devicetree.h:4877:24: note: in expansion of macro 'DT_N_NODELABEL_reg_my_spi_master'
 4877 | #define DT_CAT(a1, a2) a1 ## a2
 | ^~
C:/ncs/v2.9.0/zephyr/include/zephyr/devicetree.h:200:29: note: in expansion of macro 'DT_CAT'
 200 | #define DT_NODELABEL(label) DT_CAT(DT_N_NODELABEL_, label)
 | ^~~~~~
C:/nrf52/my_sample/sample_SPI/src/main.c:11:5: note: in expansion of macro 'DT_NODELABEL'
 11 | DT_NODELABEL(reg_my_spi_master), // Device tree node label
 | ^~~~~~~~~~~~
[47/148] Building C object zephyr/arch/arch/arm/core/cortex_m/CMakeFiles/arch__arm__core__cortex_m.dir/scb.c.obj
ninja: build stopped: subcommand failed.
FAILED: _sysbuild/sysbuild/images/sample_SPI-prefix/src/sample_SPI-stamp/sample_SPI-build C:/nrf52/my_sample/sample_SPI/build/_sysbuild/sysbuild/images/sample_SPI-prefix/src/sample_SPI-stamp/sample_SPI-build

Sagar Patel · Answer

#include #include #include #include static const struct spi_dt_spec spi1_spec = SPI_DT_SPEC_GET( DT_NODELABEL(reg_my_spi_master), // Device tree node label SPI_WORD_SET(8), // 8-bit word size 0 // CS release delay ); static void readRegister() { int err; uint8_t chip_id[3]; uint8_t spiTxCommand[1]; spiTxCommand[0] = ((0x0F << 1) | 0x01); const struct spi_buf tx_buf = { .buf = &spiTxCommand, .len = sizeof(spiTxCommand) }; const struct spi_buf_set tx = { .buffers = &tx_buf, .count = 1 }; struct spi_buf rx_buf[2] = { { .buf = NULL, .len = 1 }, { .buf = chip_id, .len = 3 } }; // 24 bit register + 1 dummy byte const struct spi_buf_set rx = { .buffers = rx_buf, .count = 2 }; do { err = spi_transceive_dt(&spi1_spec, &tx, &rx); if (err < 0) { break; } } while (false); printk("MAX30001 ID: 0x%02X 0x%02X 0x%02X ", (uint8_t)chip_id[0], (uint8_t)chip_id[1], (uint8_t)chip_id[2]); } int main(void) { if (!spi_is_ready_dt(&spi1_spec)) { printf("SPI1 DEV NOT READY "); return 0; } readRegister(); while (1) { readRegister(); k_msleep(1000); } return 0; }

Sagar Patel · Answer

&spi1 { compatible = "nordic,nrf-spi"; status = "okay"; pinctrl-0 = <&spi1_default>; pinctrl-1 = <&spi1_sleep>; pinctrl-names = "default", "sleep"; cs-gpios = <&gpio0 28 GPIO_ACTIVE_LOW>; reg_my_spi_master: spi-dev-a@0 { reg = <0>; spi-max-frequency = <4000000>; // Set frequency to 4 MHz }; }; Overlay file

Sigurd Hellesvik · Answer

Hi, 
 There are three alternatives as I see it: 
 1. I see that zephyr has drivers for some different max chips. See sensor samples . While this is not the exact sensor you got, sometimes the interface is similar enough so that you can just use the same driver. Worth a try. 
 2. Learn how to use SPI in our DevAcademy lesson on SPI . 
 3. If you want to integrate the sensor more properly, but wich requires some more work: see DevAcademy Intermediate: Lesson 7 – Device driver model . 
 Regards, Sigurd Hellesvik

nrf52dk not able to build the SPI project.

Top Replies