nRF52810 uart RX issue

RE: nRF52810 uart RX issue

Simonr — Thu, 28 Nov 2019 08:54:52 GMT

Hi Vasa

I'm sorry, but I'm not able to see what's wrong just looking at your functions like this. What does the uartStartRX(); function do different than nrf_drv_uart_rx();? You should be able to see an error message of some kind while debugging. What happens if you put uartStartRX(); in uart_init instead of nrf_drv_uart_rx?

Best regards,

Simon

RE: nRF52810 uart RX issue

Vasa — Wed, 27 Nov 2019 10:25:56 GMT

Hi, on the first snippet the line before last if() and on the second snippet the function uartStartRx(). Inside this function uartStartRx() there is another call of nrf_drv_uart_rx(). As a relult this works, but it wierd.

RE: nRF52810 uart RX issue

Simonr — Wed, 27 Nov 2019 10:15:42 GMT

I'm not able to see where the nrf_drv_uart_rx function is called within your uart_init function. Can you please try to clarify?

Best regards,

Simon

RE: nRF52810 uart RX issue

Vasa — Tue, 26 Nov 2019 16:27:27 GMT

I used SDK15.3

mcu_status_t application_init(){
m_system.bF.gpio_state = mcu_gpio_init(kGpioPortA, kGpioPin12, kGpioPin14);
mcu_set_boot_mode();
mcu_reset();

nrf_delay_ms(50);
m_system.bF.uart_state = uart_init(UART0, kPortA, kPin5, kPortA, kPin4, DISABLE, INCLUDE, BAUD_115200);
nrf_delay_ms(50);
uartStartRx();

m_system.bF.protocol_state = mcu_protocol_init();

m_system.bF.gpio_state = 0;

#ifdef DEBUG_LOG
PRINTF(TEXT_CYAN_BOLD "Application started..." TEXT_DEFAULT "\r\n");
#endif

I wrapped nrf_drv_uart_rx() function into uartStartRx() (located after nrf_delay_ms(50);)

RE: nRF52810 uart RX issue

Simonr — Tue, 26 Nov 2019 13:22:49 GMT

Can you show me a snippet of your code showing me your uart_init(); and where you put the nrf_drv_uart_rx(); call outside of uart_init();? Also, what SDK version are you using?

Best regards,

Simon

RE: nRF52810 uart RX issue

Vasa — Tue, 26 Nov 2019 07:43:25 GMT

Thanks for information, but i've already made all the necessary changes. The only thing that helped me is the second call of this function nrf_drv_uart_rx(&m_uart, m_rx_buffer, 1), so the first call I mde inside uart_init() function (as usual) and the second call I made outside uart_init() function. And this is works, but I can't explane why. Any ideas?

RE: nRF52810 uart RX issue

Simonr — Mon, 25 Nov 2019 14:02:41 GMT

In order for a project to work on an nRF52810, please follow the steps described in Transferring the project to nRF52810 hardware on the Infocenter. Keep in mind that you have to remove the nRF52840 defnes and startup/system files from the project if the project is a 52840 project by default.

Best regards,

Simon

RE: nRF52810 uart RX issue

Vasa — Mon, 25 Nov 2019 11:27:35 GMT

The biggest misunderstanding for me is that the similar code works fine on nRF52840. I just port the same code from nRF52840 to nRF52810. It seems to me that there is should not be difference between UART init function for 840 and 810.

RE: nRF52810 uart RX issue

Vasa — Mon, 25 Nov 2019 11:22:08 GMT

Hi, here is my inti function for UART

static uint8_t m_tx_buffer[1] = { 0 };
static uint8_t m_rx_buffer[1] = { 0 };

uart_status_t uart_init(uart_t uart, port_t portTx, pin_t pinTx, port_t portRx, pin_t pinRx, hwfc_t flow, parity_t parity, baud_rate_t baud){
//static nrf_drv_uart_t l_uart = NRF_DRV_UART_INSTANCE(0);
//memcpy(&m_uart, &l_uart, sizeof(m_uart));

nrf_drv_uart_config_t l_uart_cfg = NRF_DRV_UART_DEFAULT_CONFIG;
uint32_t l_pin_rx_map = NRF_UART_PSEL_DISCONNECTED;
uint32_t l_pin_tx_map = NRF_UART_PSEL_DISCONNECTED;
uint32_t l_pin_cts_map = NRF_UART_PSEL_DISCONNECTED;
uint32_t l_pin_rts_map = NRF_UART_PSEL_DISCONNECTED;
nrf_uart_hwfc_t l_flow = NRF_UART_HWFC_DISABLED;
nrf_uart_parity_t l_parity = NRF_UART_PARITY_EXCLUDED;
nrf_uart_baudrate_t l_baud = NRF_UART_BAUDRATE_115200;

l_pin_tx_map = NRF_GPIO_PIN_MAP(portTx, pinTx);
l_pin_rx_map = NRF_GPIO_PIN_MAP(portRx, pinRx);

if(flow == ENABLE){
l_flow = NRF_UART_HWFC_ENABLED;
}

if(parity == INCLUDE){
l_parity = NRF_UART_PARITY_INCLUDED;
}

switch(baud){
case BAUD_1200:
l_baud = NRF_UART_BAUDRATE_1200;
break;
case BAUD_2400:
l_baud = NRF_UART_BAUDRATE_2400;
break;
case BAUD_4800:
l_baud = NRF_UART_BAUDRATE_4800;
break;
case BAUD_9600:
l_baud = NRF_UART_BAUDRATE_9600;
break;
case BAUD_19200:
l_baud = NRF_UART_BAUDRATE_19200;
break;
case BAUD_38400:
l_baud = NRF_UART_BAUDRATE_38400;
break;
case BAUD_57600:
l_baud = NRF_UART_BAUDRATE_57600;
break;
case BAUD_115200:
l_baud = NRF_UART_BAUDRATE_115200;
break;
}

l_uart_cfg.interrupt_priority = UART_DEFAULT_CONFIG_IRQ_PRIORITY;
l_uart_cfg.use_easy_dma = true;

l_uart_cfg.pseltxd = l_pin_tx_map;
l_uart_cfg.pselrxd = l_pin_rx_map;
l_uart_cfg.hwfc = l_flow;
l_uart_cfg.parity = NRF_UART_PARITY_INCLUDED;
l_uart_cfg.baudrate = l_baud;

nrf_drv_uart_init(&m_uart, &l_uart_cfg, uart_handler);

fifo_init(&m_fifo, FIFO_SIZE);
ring_init(&m_ring, RING_SIZE);

m_uart_init_state = true;


ret = nrf_drv_uart_rx(&m_uart, m_rx_buffer, 1);

if(ret != NRF_SUCCESS){
ERROR_HANDLER();
}
return UART_OK;
}

RE: nRF52810 uart RX issue

Simonr — Mon, 25 Nov 2019 10:20:50 GMT

What have you set the UART RX buffer length as in your application? Keep in mind that the size of UART buffers needs to be in a power of 2. Can you upload a snippet of your uart_init(); function so I can have a better look at what's going on here?

Best regards,

Simon