I have a custom board with a GPS chip and trying to communicate via UART2 on a nRF9160 using NCS 2.1.2.
When I try to write to the UART, the board reboots with no error messages. This was working when I had it set to
UART0 but changing to UART2 started this issue. Any thoughts would be appreciated.
DTS:
&uart0 {
status = "okay";
current-speed = <115200>;
pinctrl-0 = <&uart0_default>;
pinctrl-1 = <&uart0_sleep>;
pinctrl-names = "default", "sleep";
};
&uart2 {
status = "okay";
current-speed = <9600>;
label = "UART_2";
pinctrl-0 = <&uart2_default>;
pinctrl-1 = <&uart2_sleep>;
pinctrl-names = "default", "sleep";
};
prj.conf
CONFIG_SERIAL=y CONFIG_CONSOLE=y CONFIG_UART_CONSOLE=y # UART CONFIG_UART_INTERRUPT_DRIVEN=y CONFIG_UART_LINE_CTRL=n CONFIG_UART_2_ASYNC=n CONFIG_UART_ASYNC_API=n CONFIG_UART_2_NRF_HW_ASYNC=n CONFIG_NRFX_UARTE2=y
Basic UART code:
void initUart() {
uart = device_get_binding("UART_2");
__ASSERT(uart, "Failed to get UART device");
interrupt_driven(uart);
}
uint16_t writeUARTblock(const uint8_t *buf_block, uint16_t len) {
uint16_t written = 0;
while (written < len) {
if (k_fifo_is_empty(&tx_fifo)) {
struct tx_uart_data_t *fifo_buf = k_malloc(sizeof(struct tx_uart_data_t));
if (len - written < UART_BUF_SIZE) {
fifo_buf->len = len - written;
} else
fifo_buf->len = UART_BUF_SIZE;
memcpy(fifo_buf->data, &buf_block[written], fifo_buf->len);
written += fifo_buf->len;
k_fifo_put(&tx_fifo, fifo_buf);
uart_irq_tx_enable(uart);
k_msleep(BUF_DELAY);
} else
k_msleep(BUF_DELAY);
}
return written;
}
Program output:
*** Booting Zephyr OS build v3.1.99-ncs1-1 *** SerialTest has started LEDs Enabled HIGH [00:00:00.488,342] <inf> regulator_fixed: gps-hw-s onoff: 0 [00:00:00.494,689] <inf> regulator_fixed: gps-hw-r onoff: 0 [00:00:00.501,037] <inf> regulator_fixed: gps-pwr-en onoff: 0 [00:00:00.510,070] <inf> lis2dh: lis2dh@18: int1 on [email protected] [00:00:00.517,059] <inf> lis2dh: lis2dh@18: int2 on [email protected] [00:00:00.526,428] <inf> lis2dh: fs=2, odr=0x4 lp_en=0x0 scale=9576 *** Booting Zephyr OS build v3.1.99-ncs1-1 *** SerialTest has started LEDs Enabled HIGH [00:00:00.488,677] <inf> regulator_fixed: gps-hw-s onoff: 0 [00:00:00.495,025] <inf> regulator_fixed: gps-hw-r onoff: 0 [00:00:00.501,373] <inf> regulator_fixed: gps-pwr-en onoff: 0 [00:00:00.510,437] <inf> lis2dh: lis2dh@18: int1 on [email protected] [00:00:00.517,425] <inf> lis2dh: lis2dh@18: int2 on [email protected] [00:00:00.526,824] <inf> lis2dh: fs=2, odr=0x4 lp_en=0x0 scale=9576 *** Booting Zephyr OS build v3.1.99-ncs1-1 *** SerialTest has started LEDs Enabled HIGH
