Current debugging
From Wiki at Neela Nurseries
2022-11-05 SAT
[00:00:00.009,000] <err> IIS2DH: iis2dh@18: device ������rF����� is not ready [00:00:00.017,000] <err> IIS2DH: Failed to initialize interrupts *** Booting Zephyr OS build zephyr-v3.2.0 *** - scoreboard - in setter function test val holds 0, - scoreboard - setting test val to 5, - DEV 1028 - symbol ST_IIS2DH got assigned 'DT_N_S_soc_S_peripheral_50000000_S_flexcomm_8a000_S_iis2dh_18' - kd_thread_iis2dh - Success finding iis2dh device, - kd_thread_iis2dh - WARNING - sensor device 'iis2dh@18' is not ready! - kd_thread_iis2dh - INFO: device name (Zephyr compile time setting) found to be 'iis2dh@18' - kd_thread_iis2dh - INFO: boot time Zephyr init result value holds 5, - DEV 1101 - WHO_AM_I register 0x0F holds 0x33 - DEV 1101 - config register 0x22 holds 0x10 - FIFO control reg holds 0x4f - updating this value to set watermark at 16 data entries . . . - write_register() returns status of 0,./tests/subsys/pm/device_power_domains/src/main.c:14: const struct device *const reg_0 = DEVICE_DT_GET(DT_NODELABEL(test_reg_0)); ./tests/subsys/pm/device_power_domains/src/main.c:15: const struct device *const reg_1 = DEVICE_DT_GET(DT_NODELABEL(test_reg_1)); ./tests/subsys/pm/device_power_domains/src/main.c:16: const struct device *const reg_chained = DEVICE_DT_GET(DT_NODELABEL(test_reg_chained)); - following update, FIFO control reg holds 0x4f - updating FIFO ctrl register to enable FIFO mode . . . - reading back vale . . . - FIFO ctrl register now holds 0x4F. - kd_thread_iis2dh - unconditionally attempting to configure data ready (drdy-gpios) interrupt, Waiting for triggers - whoami register, ODR register, and ctrl reg 5 hold 0x33, 0x57, 0x40 - whoami register, ODR register, and ctrl reg 5 hold 0x33, 0x57, 0x40 - whoami register, ODR register, and ctrl reg 5 hold 0x33, 0x57, 0x40
^ Device Tree syntax and Undocumented DTS
Examples from Zephyr 3.2.0 of device structure pointer assignments:
./tests/subsys/pm/device_power_domains/src/main.c:14: const struct device *const reg_0 = DEVICE_DT_GET(DT_NODELABEL(test_reg_0)); ./tests/subsys/pm/device_power_domains/src/main.c:15: const struct device *const reg_1 = DEVICE_DT_GET(DT_NODELABEL(test_reg_1)); ./tests/subsys/pm/device_power_domains/src/main.c:16: const struct device *const reg_chained = DEVICE_DT_GET(DT_NODELABEL(test_reg_chained));
Excerpt from Nordic sample source code:
1 /*
2 * Copyright (c) 2019 Nordic Semiconductor ASA.
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <zephyr/drivers/gpio.h>
8 #include <zephyr/drivers/uart.h>
9 #include <zephyr/device.h>
10 #include <zephyr/devicetree.h>
11
12 #define RESET_NODE DT_NODELABEL(nrf52840_reset)
13
14 #if DT_NODE_HAS_STATUS(RESET_NODE, okay)
15
16 #define RESET_GPIO_CTRL DT_GPIO_CTLR(RESET_NODE, gpios)
17 #define RESET_GPIO_PIN DT_GPIO_PIN(RESET_NODE, gpios)
18 #define RESET_GPIO_FLAGS DT_GPIO_FLAGS(RESET_NODE, gpios)
19
20 int bt_hci_transport_setup(const struct device *h4)
21 {
22 int err;
23 char c;
24 const struct device *const port = DEVICE_DT_GET(RESET_GPIO_CTRL);
25
26 if (!device_is_ready(port)) {
27 return -EIO;
28 }
29
30 /* Configure pin as output and initialize it to inactive state. */
31 err = gpio_pin_configure(port, RESET_GPIO_PIN,
32 RESET_GPIO_FLAGS | GPIO_OUTPUT_INACTIVE);
33 if (err) {
34 return err;
35 }
36
37 /* Reset the nRF52840 and let it wait until the pin is inactive again
38 * before running to main to ensure that it won't send any data until
39 * the H4 device is setup and ready to receive.
40 */
41 err = gpio_pin_set(port, RESET_GPIO_PIN, 1);
42 if (err) {
43 return err;
44 }
45
46 /* Wait for the nRF52840 peripheral to stop sending data.
"./boards/arm/nrf9160dk_nrf9160/nrf52840_reset.c" 67L, 1609C
