Hello folks
I have been struggling for some time with the driver for the MCP23S17 in Zephyr.
I have already tried this code:
https://devzone.nordicsemi.com/f/nordic-q-a/64024/sample-mcp23s17-driver
But for me its not working!
I receive the following error:
/home/trug/zephyrproject/zephyr/include/devicetree.h:158:36: error: 'DT_N_NODELABEL_spi2gpio_P_label' undeclared (first use in this function); did you mean 'DT_N_NODELABEL_gpiote'?
158 | #define DT_NODELABEL(label) DT_CAT(DT_N_NODELABEL_, label)
| ^~~~~~~~~~~~~~~
/home/trug/zephyrproject/zephyr/include/devicetree.h:1526:38: note: in definition of macro 'DT_CAT'
1526 | #define DT_CAT(node_id, prop_suffix) node_id##prop_suffix
| ^~~~~~~
/home/trug/zephyrproject/zephyr/include/devicetree.h:390:27: note: in expansion of macro 'DT_PROP'
390 | #define DT_LABEL(node_id) DT_PROP(node_id, label)
| ^~~~~~~
../src/main.c:80:27: note: in expansion of macro 'DT_LABEL'
80 | #define MCP23S17_DEV_NAME DT_LABEL(DT_NODELABEL(spi2gpio))
| ^~~~~~~~
/home/trug/zephyrproject/zephyr/include/devicetree.h:158:29: note: in expansion of macro 'DT_CAT'
158 | #define DT_NODELABEL(label) DT_CAT(DT_N_NODELABEL_, label)
| ^~~~~~
../src/main.c:80:36: note: in expansion of macro 'DT_NODELABEL'
80 | #define MCP23S17_DEV_NAME DT_LABEL(DT_NODELABEL(spi2gpio))
...
...
...
| ^~~~~~~~~~~~
../src/main.c:106:51: note: in expansion of macro 'MCP23S17_DEV_NAME'
106 | struct device *mcp23s17_dev = device_get_binding(MCP23S17_DEV_NAME);
This is my main.c
#include <zephyr.h>
#include <device.h>
#include <devicetree.h>
#include <drivers/gpio.h>
#include <sys/printk.h>
#include <drivers/uart.h>
#include <logging/log.h>
#include "CustomBoard.h"
LOG_MODULE_REGISTER(net_google_iot_mqtt, LOG_LEVEL_DBG);
/* This comes from newlib. */
#include <time.h>
#include <inttypes.h>
#define MCP23S17_DEV_NAME DT_LABEL(DT_NODELABEL(spi2gpio))
void main(void)
{
int ret;
LOG_INF(">>> Test: Driver MCP23S17 <<<");
// MCP23S17
struct device *mcp23s17_dev = device_get_binding(MCP23S17_DEV_NAME);
if (!mcp23s17_dev) {
LOG_INF("Cannot find mcp23s17!\n");
return;
}
ret = gpio_pin_configure(mcp23s17_dev, 1, GPIO_OUTPUT_ACTIVE);
...
...
...
while (1) {
gpio_pin_set(mcp23s17_dev, 1, (int)true);
k_msleep(125);
gpio_pin_set(mcp23s17_dev, 1, (int)false);
}
}
I compared it to some other drivers in zephyr and also tried the following defines in the main.c (but no of them are working)
//#define MCP23S17_DEV_NAME DT_LABEL(DT_NODELABEL("spi2gpio"))
//#define MCP23S17_DEV_NAME DT_LABEL(DT_NODELABEL(mcp23s17))
//#define MCP23S17_DEV_NAME DT_INST(0, spi2gpio)
//#define MCP23S17_DEV_NAME DT_LABEL(DT_INST(0, microchip_mcp23s17)
//#define MCP23S17_DEV_NAME DT_LABEL(DT_INST(0, mcp23s17)
//#define MCP23S17_DEV_NAME "GPIO_MCP23S17"
//#define MCP23S17_DEV_NAME "microchip_mcp23s17"
Here is my .overlay file:
/* GPIO Expander */
&spi2 {
label="SPI2";
status = "okay";
sck-pin = <22>;
mosi-pin = <23>;
miso-pin = <24>;
cs-gpios = <&gpio1 1 0>;
spi2gpio: gpio@0 {
label="mcp23s17";
compatible="microchip,mcp23s17";
gpio-controller;
#gpio-cells = <2>;
spi-max-frequency = <800000>;
reg = <0>;
#ngpios = <16>;
};
};
Here are my configs from my prj.confg
# Driver: GPIO
CONFIG_GPIO=y
CONFIG_GPIO_MCP23S17=y
# SPI
CONFIG_SPI=y
CONFIG_SPI_2=y
# UART support
CONFIG_SERIAL=y
CONFIG_UART_CONSOLE=n
# Print
CONFIG_PRINTK=y
# RTT Segger Debugger
CONFIG_USE_SEGGER_RTT=y
CONFIG_RTT_CONSOLE=y
What am I doing wrong? Can anyone help me or give me an example?
Regards
Dominique
