I'm trying to configure UART, but it doesn't work. I really appreciate it if you help me.
here is a code.
/* main.c */
void main(void)
{
printk("Hello, World!\r\n");
uart_wifi = device_get_binding("UART_1");
if (!uart_wifi) {
printk("error\r\n"); // error happens.
}
...
}
/* nRF9160_pca10090.dts */
/dts-v1/;
#include <nordic/nrf9160_xxaa.dtsi>
{
model = "Nordic PCA10090 Dev Kit";
compatible = "nordic,pca10090-dk", "nordic,nrf9160-xxaa";
chosen {
zephyr,console = &uart0;
zephyr,wifi-uart = &uart1;
zephyr,sram = &sram0;
zephyr,flash = &flash0;
};
aliases {
led0 = &led0;
led1 = &led1;
led2 = &led2;
led3 = &led3;
sw0 = &button2;
sw1 = &button3;
sw2 = &button0;
sw3 = &button1;
};
....
&uart0 {
status = "ok";
current-speed = <115200>;
tx-pin = <29>;
rx-pin = <28>;
rts-pin = <27>;
cts-pin = <26>;
};
&uart1 {
status = "ok";
current-speed = <115200>;
tx-pin = <1>;
rx-pin = <0>;
rts-pin = <14>;
cts-pin = <15>;
};
....
/* nRF9160_pca10090.dts_complied */
/dts-v1/;
/ {
#address-cells = < 0x01 >;
#size-cells = < 0x01 >;
model = "Nordic PCA10090 Dev Kit";
compatible = "nordic,pca10090-dk", "nordic,nrf9160-xxaa";
chosen {
zephyr,console = "/soc/uart@40008000";
zephyr,wifi-uart = "/soc/uart@40009000";
zephyr,sram = "/memory@20020000";
zephyr,flash = "/flash-controller@40039000/flash@0";
zephyr,code-partition = "/flash-controller@40039000/flash@0/partitions/partition@40000";
};
aliases {
nrf-rtc1 = "/soc/rtc@40015000";
nrf-clock = "/soc/clock@40005000";
nrf-power = "/soc/power@40005000";
nvmc = "/soc/nvmc@40039000";
uart-0 = "/soc/uart@40008000";
uart-1 = "/soc/uart@40009000";
uart-2 = "/soc/uart@4000a000";
uart-3 = "/soc/uart@4000b000";
.....
};
soc {
#address-cells = < 0x01 >;
#size-cells = < 0x01 >;
compatible = "simple-bus";
interrupt-parent = < 0x01 >;
ranges;
nvic: interrupt-controller@e000e100 {
compatible = "arm,v8m-nvic";
reg = < 0xe000e100 0xc00 >;
interrupt-controller;
#interrupt-cells = < 0x02 >;
arm,num-irq-priority-bits = < 0x03 >;
phandle = < 0x01 >;
};
...
uart0: uart@40008000 {
compatible = "nordic,nrf-uarte";
reg = < 0x40008000 0x1000 >;
interrupts = < 0x08 0x01 >;
status = "ok";
label = "UART_0";
current-speed = < 0x1c200 >;
tx-pin = < 0x1d >;
rx-pin = < 0x1c >;
rts-pin = < 0x1b >;
cts-pin = < 0x1a >;
};
uart1: uart@40009000 {
compatible = "nordic,nrf-uarte";
reg = < 0x40009000 0x1000 >;
interrupts = < 0x09 0x01 >;
status = "ok";
label = "UART_1";
current-speed = < 0x1c200 >;
tx-pin = < 0x01 >;
rx-pin = < 0x00 >;
rts-pin = < 0x0e >;
cts-pin = < 0x0f >;
};
...
};
...
};
