Hello, I am trying to read data from the sensor using I2C, I have the nrf9160 on an Icarus board https://www.actinius.com/icarus.
I tried following this guide: https://devzone.nordicsemi.com/guides/nrf-connect-sdk-guides/b/peripherals/posts/twi-ic2-implementation-with-nrfx-twis-driver
but I ended up with a lot of errors when building
main.c
#include <device.h>
#include <devicetree.h>
#include <drivers/gpio.h>
#include <drivers/i2c.h>
#include <sys/printk.h>
#include <zephyr.h>
/* 1000 msec = 1 sec */
#define SLEEP_TIME_MS 1000
/* The devicetree node identifier for the "led0" alias. */
#define LED0_NODE DT_ALIAS(led0)
const struct device *led_dev;
#if DT_NODE_HAS_STATUS(LED0_NODE, okay)
#define LED0 DT_GPIO_LABEL(LED0_NODE, gpios)
#define PIN DT_GPIO_PIN(LED0_NODE, gpios)
#define FLAGS DT_GPIO_FLAGS(LED0_NODE, gpios)
#else
/* A build error here means your board isn't set up to blink an LED. */
#error "Unsupported board: led0 devicetree alias is not defined"
#define LED0 ""
#define PIN 0
#define FLAGS 0
#endif
////////////////////////////////////////////////////////////
// TWI Test Configuration
////////////////////////////////////////////////////////////
#define ECHO_WRITES false
#define MSG_EXCHANGE_CNT 5
#define INFINITE_MSG_EXCHANGE false
#define TWI_LOOPBACK false
// In non-loopback mode, the tx message is unchanged.
// In loopback mode the rx buffer acts as both the tx and rx buffer. The rx buffer is updated with each read.
////////////////////////////////////////////////////////////
// Adding TWI Functionality
////////////////////////////////////////////////////////////
#define TWI_BUFFER_SIZE 14
/* static unsigned char i2c_tx_buffer[TWI_BUFFER_SIZE] = {'M', 'S', 'G', ' ', 'F', 'R', 'O', 'M', ' ', 'T', 'W', 'I', 'M', '\0'};
*/static unsigned char i2c_rx_buffer[TWI_BUFFER_SIZE] = "Begin Loopback";
// TWI Master Setup
#define MY_TWIM DT_NODELABEL(i2c2)
const struct device *nrfx_twis_dev1;
static void twim_init(void)
{
int config_result = false;
nrfx_twis_dev1 = device_get_binding(DT_LABEL(MY_TWIM));
if (nrfx_twis_dev1 == NULL)
{
printk("\n\nI2C Slave: Device driver not found.\n");
}
else
{
printk("\nI2C device 1: %s\n", DT_PROP(DT_NODELABEL(twis_device1), label));
config_result = i2c_configure(nrfx_twis_dev1, I2C_SPEED_SET(I2C_SPEED_FAST) | I2C_MODE_MASTER);
if (!config_result)
{
printk("I2C Master: Slave ADDR: 0x%x SCL: %d, SDA: %d, CLK(Hz): %u\n\n",
DT_REG_ADDR(DT_NODELABEL(twis_device1)),
DT_PROP(MY_TWIM, scl_pin),
DT_PROP(MY_TWIM, sda_pin),
DT_PROP(MY_TWIM, clock_frequency));
}
else
printk("\n\nI2C: Configuration error code: %d\n", config_result);
}
}
// TWI Master Write
/* void twi_write_tst(void)
{
int rtn_code = 0;
uint8_t incr = 0;
bool loopback = TWI_LOOPBACK;
if (nrfx_twis_dev1 != NULL)
{
// printk("\nTWIM TX/writing.");
if (!loopback)
{ // write repeated default message
rtn_code = i2c_write(nrfx_twis_dev1, i2c_tx_buffer, sizeof(i2c_tx_buffer), DT_REG_ADDR(DT_NODELABEL(twis_device1)));
}
else
{ // use read buffer as write buffer
rtn_code = i2c_write(nrfx_twis_dev1, i2c_rx_buffer, sizeof(i2c_rx_buffer), DT_REG_ADDR(DT_NODELABEL(twis_device1)));
}
if (ECHO_WRITES && (rtn_code == 0))
{
printk("\nTWIM TX:");
while (incr < TWI_BUFFER_SIZE)
printk("%c", i2c_rx_buffer[incr++]);
printk("\n");
} // rtn_code == 0
if (rtn_code)
{
printk("twi return code %u\n\n", rtn_code);
}
}
else // twis_dev1 == NULL
printk("TWIS device is not initialized correctly.\n");
} */
void twi_read_tst(void)
{
int rtn_code = 0;
uint8_t incr = 0;
if (nrfx_twis_dev1 != NULL)
{
// printk("\nTWIM RX/reading -->");
rtn_code = i2c_read(nrfx_twis_dev1, i2c_rx_buffer, sizeof(i2c_rx_buffer),DT_REG_ADDR( DT_PATH(i2c2,cd30_61) ) );
if (rtn_code == 0)
{
printk("TWIM RX:");
while (incr < TWI_BUFFER_SIZE)
{
printk("%c", i2c_rx_buffer[incr++]);
};
printk("\n");
}
if (rtn_code)
printk("twi return code %u\n\n", rtn_code);
}
else // twim_dev1 == NULL
printk("TWI is not initialized correctly.\n");
}
void main(void)
{
uint16_t twi_test_cnt = MSG_EXCHANGE_CNT;
bool led_is_on = true;
uint32_t ret;
led_dev = device_get_binding(LED0);
if (led_dev == NULL)
{
return;
}
ret = gpio_pin_configure(led_dev, PIN, GPIO_OUTPUT_ACTIVE | FLAGS);
if (ret < 0)
{
return;
}
twim_init();
while (1)
{
gpio_pin_set(led_dev, PIN, (int)led_is_on);
led_is_on = !led_is_on;
if ((twi_test_cnt) || (INFINITE_MSG_EXCHANGE))
{
twi_read_tst();
if (twi_test_cnt)
{
twi_test_cnt--;
}
if ((!twi_test_cnt) && (!INFINITE_MSG_EXCHANGE))
{
printk("\n\nTo rerun this test, reset the master.\n\n");
}
}
k_msleep(SLEEP_TIME_MS);
}
}
actinuos_icarus_ns.overlay
&i2c2 {
compatible = "nordic,nrf-twim";
status = "okay";
clock-frequency = <I2C_BITRATE_STANDARD>;
/* other property settings can go here */
twis_device1: scd30@61 { /* e */
// device compatible /* f */
label = "scd30"; /* g */
reg = <0x61>; /* h */
};
};
log:
C:\Users\alnag\Desktop\Work\blinky-TWIM>west build -b actinius_icarus_ns
[0/1] Re-running CMake...
Including boilerplate (Zephyr base (cached)): C:/Users/alnag/ncs/v1.9.1/zephyr/cmake/app/boilerplate.cmake
-- Application: C:/Users/alnag/Desktop/Work/blinky-TWIM
-- Zephyr version: 2.7.99 (C:/Users/alnag/ncs/v1.9.1/zephyr), build: v2.7.99-ncs1-1
-- Found west (found suitable version "0.12.0", minimum required is "0.7.1")
-- Board: actinius_icarus_ns
-- Cache files will be written to: C:/Users/alnag/ncs/v1.9.1/zephyr/.cache
-- Found dtc: C:/Users/alnag/ncs/v1.9.1/toolchain/opt/bin/dtc.exe (found suitable version "1.4.7", minimum required is "1.4.6")
-- Found toolchain: gnuarmemb (c:/Users/alnag/ncs/v1.9.1/toolchain/opt)
-- Found BOARD.dts: C:/Users/alnag/ncs/v1.9.1/zephyr/boards/arm/actinius_icarus/actinius_icarus_ns.dts
-- Found devicetree overlay: c:/Users/alnag/Desktop/Work/blinky-TWIM/actinius_icarus_ns.overlay
-- Generated zephyr.dts: C:/Users/alnag/Desktop/Work/blinky-TWIM/build/zephyr/zephyr.dts
-- Generated devicetree_unfixed.h: C:/Users/alnag/Desktop/Work/blinky-TWIM/build/zephyr/include/generated/devicetree_unfixed.h
-- Generated device_extern.h: C:/Users/alnag/Desktop/Work/blinky-TWIM/build/zephyr/include/generated/device_extern.h
-- Including generated dts.cmake file: C:/Users/alnag/Desktop/Work/blinky-TWIM/build/zephyr/dts.cmake
Parsing C:/Users/alnag/ncs/v1.9.1/zephyr/Kconfig
Loaded configuration 'C:/Users/alnag/Desktop/Work/blinky-TWIM/build/zephyr/.config'
No change to configuration in 'C:/Users/alnag/Desktop/Work/blinky-TWIM/build/zephyr/.config'
No change to Kconfig header in 'C:/Users/alnag/Desktop/Work/blinky-TWIM/build/zephyr/include/generated/autoconf.h'
C:\Users\alnag\ncs\v1.9.1\toolchain\opt\bin\arm-none-eabi-gdb.exe: warning: Couldn't determine a path for the index cache directory.
Changed board to secure actinius_icarus (NOT NS)
=== child image spm - begin ===
loading initial cache file C:/Users/alnag/Desktop/Work/blinky-TWIM/build/spm/child_image_preload.cmake
Including boilerplate (Zephyr base (cached)): C:/Users/alnag/ncs/v1.9.1/zephyr/cmake/app/boilerplate.cmake
-- Application: C:/Users/alnag/ncs/v1.9.1/nrf/samples/spm
-- Zephyr version: 2.7.99 (C:/Users/alnag/ncs/v1.9.1/zephyr), build: v2.7.99-ncs1-1
-- Found west (found suitable version "0.12.0", minimum required is "0.7.1")
-- Board: actinius_icarus
-- Cache files will be written to: C:/Users/alnag/ncs/v1.9.1/zephyr/.cache
-- Found dtc: C:/Users/alnag/ncs/v1.9.1/toolchain/opt/bin/dtc.exe (found suitable version "1.4.7", minimum required is "1.4.6")
-- Found toolchain: gnuarmemb (c:/Users/alnag/ncs/v1.9.1/toolchain/opt)
-- Found BOARD.dts: C:/Users/alnag/ncs/v1.9.1/zephyr/boards/arm/actinius_icarus/actinius_icarus.dts
-- Generated zephyr.dts: C:/Users/alnag/Desktop/Work/blinky-TWIM/build/spm/zephyr/zephyr.dts
-- Generated devicetree_unfixed.h: C:/Users/alnag/Desktop/Work/blinky-TWIM/build/spm/zephyr/include/generated/devicetree_unfixed.h
-- Generated device_extern.h: C:/Users/alnag/Desktop/Work/blinky-TWIM/build/spm/zephyr/include/generated/device_extern.h
-- Including generated dts.cmake file: C:/Users/alnag/Desktop/Work/blinky-TWIM/build/spm/zephyr/dts.cmake
Parsing C:/Users/alnag/ncs/v1.9.1/zephyr/Kconfig
Loaded configuration 'C:/Users/alnag/Desktop/Work/blinky-TWIM/build/spm/zephyr/.config'
No change to configuration in 'C:/Users/alnag/Desktop/Work/blinky-TWIM/build/spm/zephyr/.config'
No change to Kconfig header in 'C:/Users/alnag/Desktop/Work/blinky-TWIM/build/spm/zephyr/include/generated/autoconf.h'
C:\Users\alnag\ncs\v1.9.1\toolchain\opt\bin\arm-none-eabi-gdb.exe: warning: Couldn't determine a path for the index cache directory.
CMake Warning at C:/Users/alnag/ncs/v1.9.1/zephyr/CMakeLists.txt:1687 (message):
__ASSERT() statements are globally ENABLED
-- Configuring done
-- Generating done
-- Build files have been written to: C:/Users/alnag/Desktop/Work/blinky-TWIM/build/spm
=== child image spm - end ===
Dropping partition 'nrf_modem_lib_trace' since its size is 0.
-- Configuring done
-- Generating done
-- Build files have been written to: C:/Users/alnag/Desktop/Work/blinky-TWIM/build
[0/136] Performing build step for 'spm_subimage'
[213/221] Linking C executable zephyr\zephyr_pre0.elf
[216/221] Linking C executable zephyr\zephyr_pre1.elf
[221/221] Linking C executable zephyr\zephyr.elf
Memory region Used Size Region Size %age Used
FLASH: 64 KB 64 KB 100.00%
SRAM: 12008 B 32 KB 36.65%
IDT_LIST: 0 GB 2 KB 0.00%
[44/134] Building C object CMakeFiles/app.dir/src/main.c.obj
FAILED: CMakeFiles/app.dir/src/main.c.obj
C:\Users\alnag\ncs\v1.9.1\toolchain\opt\bin\arm-none-eabi-gcc.exe -DBUILD_VERSION=v2.7.99-ncs1-1 -DEXT_API_MAGIC=0x281ee6de,0xb845acea,23298 -DFIRMWARE_INFO_MAGIC=0x281ee6de,0x8fcebb4c,23298 -DKERNEL -DNRF9160_XXAA -DNRF_SKIP_FICR_NS_COPY_TO_RAM -DNRF_TRUSTZONE_NONSECURE -DUSE_PARTITION_MANAGER=1 -D_FORTIFY_SOURCE=2 -D__PROGRAM_START -D__ZEPHYR__=1 -IC:/Users/alnag/ncs/v1.9.1/zephyr/include -Izephyr/include/generated -IC:/Users/alnag/ncs/v1.9.1/zephyr/soc/arm/nordic_nrf/nrf91 -IC:/Users/alnag/ncs/v1.9.1/zephyr/soc/arm/nordic_nrf/common/. -IC:/Users/alnag/ncs/v1.9.1/nrf/include -IC:/Users/alnag/ncs/v1.9.1/modules/hal/cmsis/CMSIS/Core/Include -IC:/Users/alnag/ncs/v1.9.1/modules/hal/nordic/nrfx -IC:/Users/alnag/ncs/v1.9.1/modules/hal/nordic/nrfx/drivers/include -IC:/Users/alnag/ncs/v1.9.1/modules/hal/nordic/nrfx/mdk -IC:/Users/alnag/ncs/v1.9.1/zephyr/modules/hal_nordic/nrfx/. -IC:/Users/alnag/ncs/v1.9.1/nrfxlib/nrf_modem/include -isystem C:/Users/alnag/ncs/v1.9.1/zephyr/lib/libc/minimal/include -isystem c:/users/alnag/ncs/v1.9.1/toolchain/opt/bin/../lib/gcc/arm-none-eabi/9.2.1/include -isystem c:/users/alnag/ncs/v1.9.1/toolchain/opt/bin/../lib/gcc/arm-none-eabi/9.2.1/include-fixed -Os -imacros C:/Users/alnag/Desktop/Work/blinky-TWIM/build/zephyr/include/generated/autoconf.h -ffreestanding -fno-common -g -gdwarf-4 -fdiagnostics-color=always -mcpu=cortex-m33 -mthumb -mabi=aapcs -mfp16-format=ieee -imacros C:/Users/alnag/ncs/v1.9.1/zephyr/include/toolchain/zephyr_stdint.h -Wall -Wformat -Wformat-security -Wno-format-zero-length -Wno-main -Wno-pointer-sign -Wpointer-arith -Wexpansion-to-defined -Wno-unused-but-set-variable -Werror=implicit-int -fno-asynchronous-unwind-tables -fno-pie -fno-pic -fno-strict-overflow -fno-reorder-functions -fno-defer-pop -fmacro-prefix-map=C:/Users/alnag/Desktop/Work/blinky-TWIM=CMAKE_SOURCE_DIR -fmacro-prefix-map=C:/Users/alnag/ncs/v1.9.1/zephyr=ZEPHYR_BASE -fmacro-prefix-map=C:/Users/alnag/ncs/v1.9.1=WEST_TOPDIR -ffunction-sections -fdata-sections -std=c99 -nostdinc -MD -MT CMakeFiles/app.dir/src/main.c.obj -MF CMakeFiles\app.dir\src\main.c.obj.d -o CMakeFiles/app.dir/src/main.c.obj -c ../src/main.c
In file included from C:/Users/alnag/ncs/v1.9.1/zephyr/include/arch/arm/aarch32/arch.h:20,
from C:/Users/alnag/ncs/v1.9.1/zephyr/include/arch/cpu.h:19,
from C:/Users/alnag/ncs/v1.9.1/zephyr/include/kernel_includes.h:33,
from C:/Users/alnag/ncs/v1.9.1/zephyr/include/kernel.h:17,
from C:/Users/alnag/ncs/v1.9.1/zephyr/include/init.h:11,
from C:/Users/alnag/ncs/v1.9.1/zephyr/include/device.h:29,
from ../src/main.c:7:
../src/main.c: In function 'twi_read_tst':
C:/Users/alnag/ncs/v1.9.1/zephyr/include/devicetree.h:81:17: error: 'DT_N_S_i2c2_S_cd30_61_REG_IDX_0_VAL_ADDRESS' undeclared (first use in this function); did you mean 'DT_N_S_cpus_S_cpu_0_REG_IDX_0_VAL_ADDRESS'?
81 | #define DT_ROOT DT_N
| ^~~~
C:/Users/alnag/ncs/v1.9.1/zephyr/include/devicetree.h:3022:24: note: in definition of macro 'DT_CAT'
3022 | #define DT_CAT(a1, a2) a1 ## a2
| ^~
C:/Users/alnag/ncs/v1.9.1/zephyr/include/devicetree.h:1717:30: note: in expansion of macro 'DT_REG_ADDR_BY_IDX'
1717 | #define DT_REG_ADDR(node_id) DT_REG_ADDR_BY_IDX(node_id, 0)
| ^~~~~~~~~~~~~~~~~~
../src/main.c:136:76: note: in expansion of macro 'DT_REG_ADDR'
136 | rtn_code = i2c_read(nrfx_twis_dev1, i2c_rx_buffer, sizeof(i2c_rx_buffer),DT_REG_ADDR( DT_PATH(i2c2,cd30_61) ) );
| ^~~~~~~~~~~
C:/Users/alnag/ncs/v1.9.1/zephyr/include/sys/util_internal.h:98:26: note: in expansion of macro 'UTIL_PRIMITIVE_CAT'
98 | #define UTIL_CAT(a, ...) UTIL_PRIMITIVE_CAT(a, __VA_ARGS__)
| ^~~~~~~~~~~~~~~~~~
C:/Users/alnag/ncs/v1.9.1/zephyr/include/devicetree.h:3004:2: note: in expansion of macro 'UTIL_CAT'
3004 | UTIL_CAT(DT_ROOT, MACRO_MAP_CAT(DT_S_PREFIX, __VA_ARGS__))
| ^~~~~~~~
C:/Users/alnag/ncs/v1.9.1/zephyr/include/devicetree.h:3004:11: note: in expansion of macro 'DT_ROOT'
3004 | UTIL_CAT(DT_ROOT, MACRO_MAP_CAT(DT_S_PREFIX, __VA_ARGS__))
| ^~~~~~~
C:/Users/alnag/ncs/v1.9.1/zephyr/include/devicetree.h:129:22: note: in expansion of macro 'DT_PATH_INTERNAL'
129 | #define DT_PATH(...) DT_PATH_INTERNAL(__VA_ARGS__)
| ^~~~~~~~~~~~~~~~
../src/main.c:136:89: note: in expansion of macro 'DT_PATH'
136 | rtn_code = i2c_read(nrfx_twis_dev1, i2c_rx_buffer, sizeof(i2c_rx_buffer),DT_REG_ADDR( DT_PATH(i2c2,cd30_61) ) );
| ^~~~~~~
C:/Users/alnag/ncs/v1.9.1/zephyr/include/devicetree.h:81:17: note: each undeclared identifier is reported only once for each function it appears in
81 | #define DT_ROOT DT_N
| ^~~~
C:/Users/alnag/ncs/v1.9.1/zephyr/include/devicetree.h:3022:24: note: in definition of macro 'DT_CAT'
3022 | #define DT_CAT(a1, a2) a1 ## a2
| ^~
C:/Users/alnag/ncs/v1.9.1/zephyr/include/devicetree.h:1717:30: note: in expansion of macro 'DT_REG_ADDR_BY_IDX'
1717 | #define DT_REG_ADDR(node_id) DT_REG_ADDR_BY_IDX(node_id, 0)
| ^~~~~~~~~~~~~~~~~~
../src/main.c:136:76: note: in expansion of macro 'DT_REG_ADDR'
136 | rtn_code = i2c_read(nrfx_twis_dev1, i2c_rx_buffer, sizeof(i2c_rx_buffer),DT_REG_ADDR( DT_PATH(i2c2,cd30_61) ) );
| ^~~~~~~~~~~
C:/Users/alnag/ncs/v1.9.1/zephyr/include/sys/util_internal.h:98:26: note: in expansion of macro 'UTIL_PRIMITIVE_CAT'
98 | #define UTIL_CAT(a, ...) UTIL_PRIMITIVE_CAT(a, __VA_ARGS__)
| ^~~~~~~~~~~~~~~~~~
C:/Users/alnag/ncs/v1.9.1/zephyr/include/devicetree.h:3004:2: note: in expansion of macro 'UTIL_CAT'
3004 | UTIL_CAT(DT_ROOT, MACRO_MAP_CAT(DT_S_PREFIX, __VA_ARGS__))
| ^~~~~~~~
C:/Users/alnag/ncs/v1.9.1/zephyr/include/devicetree.h:3004:11: note: in expansion of macro 'DT_ROOT'
3004 | UTIL_CAT(DT_ROOT, MACRO_MAP_CAT(DT_S_PREFIX, __VA_ARGS__))
| ^~~~~~~
C:/Users/alnag/ncs/v1.9.1/zephyr/include/devicetree.h:129:22: note: in expansion of macro 'DT_PATH_INTERNAL'
129 | #define DT_PATH(...) DT_PATH_INTERNAL(__VA_ARGS__)
| ^~~~~~~~~~~~~~~~
../src/main.c:136:89: note: in expansion of macro 'DT_PATH'
136 | rtn_code = i2c_read(nrfx_twis_dev1, i2c_rx_buffer, sizeof(i2c_rx_buffer),DT_REG_ADDR( DT_PATH(i2c2,cd30_61) ) );
| ^~~~~~~
[53/134] Building C object zephyr/kernel/CMakeFiles/kernel.dir/sched.c.obj
ninja: build stopped: subcommand failed.
FATAL ERROR: command exited with status 1: 'C:\Users\alnag\ncs\v1.9.1\toolchain\opt\bin\cmake.EXE' --build 'C:\Users\alnag\Desktop\Work\blinky-TWIM\build'
here is the project if someone to try bulding for themself.
