NRF58232/SDK15 Where can I find sample code to use NRFX_UARTE ?

RE: NRF58232/SDK15 Where can I find sample code to use NRFX_UARTE ?

MPS — Tue, 24 Apr 2018 14:26:40 GMT

Many thanks for your help. I think I can do what I want now.

Ok for the compatibility, I understand.

RE: NRF58232/SDK15 Where can I find sample code to use NRFX_UARTE ?

Håkon Alseth — Tue, 24 Apr 2018 10:35:55 GMT

Glad to hear that it works now.

A general rule is that as long as you do not add or use any modules that depends on the UART peripheral, it should be fine. As you're doing a bare-metal implementation, it is _very unlikely_ that the register definitions will ever change for the current device that you are using.

However; I cannot guarantee that a module that you require in the future does not depend on the UART in some way (for logging or similar).

Best regards,

Håkon

RE: NRF58232/SDK15 Where can I find sample code to use NRFX_UARTE ?

MPS — Tue, 24 Apr 2018 10:15:59 GMT

Thank you, it seems to work now. I test it all and come back here to say if everything is ok.
I will not have compatibility problems with future SDKS?

RE: NRF58232/SDK15 Where can I find sample code to use NRFX_UARTE ?

Håkon Alseth — Tue, 24 Apr 2018 10:08:30 GMT

Could you try to remove the nrfx_uarte.c and nrfx_prs.c from your project and see if it works then?

RE: NRF58232/SDK15 Where can I find sample code to use NRFX_UARTE ?

MPS — Tue, 24 Apr 2018 10:06:51 GMT

I have :

NRFX_UARTE_ENABLED 0

NRFX_UARTE0_ENABLED 0

NRFX_UART_ENABLED 0

NRFX_UART0_ENABLED 0

UART_ENABLED 1

UART_EASY_DMA_SUPPORT 1

UART_LEGACY_SUPPORT 0

UART0_ENABLED 1

UART0_CONFIG_USE_EASY_DMA 1

NRFX_PRS_ENABLED 1

NRFX_PRS_BOX_4_ENABLED 1

RE: NRF58232/SDK15 Where can I find sample code to use NRFX_UARTE ?

Håkon Alseth — Tue, 24 Apr 2018 10:02:32 GMT

Did you set this in your sdk_config.h file and re-compile the whole project (clean first, then build)?

#define NRFX_UARTE_ENABLED 0

The first error is because nrfx_uarte.c is still enabled, and the second is due to the "nrfx_prs" library being used by nrfx_uarte is in use.

Best regards,

Håkon

RE: NRF58232/SDK15 Where can I find sample code to use NRFX_UARTE ?

MPS — Tue, 24 Apr 2018 09:07:41 GMT

Ok.

I include only "nrf_uarte.h"

and with void UARTE0_UART0_IRQHandler(void) I have an error :

1> main.o: In function `UARTE0_UART0_IRQHandler':
1> main.c:729: multiple definition of `UARTE0_UART0_IRQHandler'
1> Nordic_BLE\nRF5_SDK_15.0.0\modules\nrfx\drivers\src/nrfx_uarte.c:571: first defined here

If I keep NRFX_PRS_ENABLED = 1 and NRFX_PRS_BOX_4_ENABLED 1, I have an error :

1> main.o: In function `UARTE0_UART0_IRQHandler':
1> main.c:728: multiple definition of `UARTE0_UART0_IRQHandler'
1> Nordic_BLE\nRF5_SDK_15.0.0\modules\nrfx\drivers\src\prs/nrfx_prs.c:81: first defined here

RE: NRF58232/SDK15 Where can I find sample code to use NRFX_UARTE ?

Håkon Alseth — Tue, 24 Apr 2018 09:01:09 GMT

You need to edit your sdk_config.h file, and set:

#define NRFX_UARTE_ENABLED 0

and

#define NRFX_UART_ENABLED 0

After this, you implement your interrupt handler:

void UARTE0_UART0_IRQHandler(void)
{
    // Code
}

Best regards,

Håkon

RE: NRF58232/SDK15 Where can I find sample code to use NRFX_UARTE ?

MPS — Tue, 24 Apr 2018 08:41:57 GMT

Hi Hakon,

Thanks for your help.

For disabling nrfx, I need to modify sdk_config.h and not included nrfx_uarte.h ?

I need to include just "nrf_uarte.h" ?

How to create UARTE0_UART0_IRQ in my main software ?

Sorry for all these questions, but I feel like going round with all these UART driver ...

Best regards,

RE: NRF58232/SDK15 Where can I find sample code to use NRFX_UARTE ?

Håkon Alseth — Tue, 24 Apr 2018 08:15:21 GMT

Hi,

It looks like you are mixing bare metal implementation, and using the nrfx_uarte driver. You must disable the nrfx_uarte module in order to use the UARTE peripheral directly.

Best regards,

Håkon

RE: NRF58232/SDK15 Where can I find sample code to use NRFX_UARTE ?

MPS — Fri, 20 Apr 2018 15:30:38 GMT

I don't understand how to get all the interruption that I wish as an event in the handler.

For example, how to be informed of RXSTARTED for load another buffer as seen in Figure 95 of the nRF52832 datasheet.

If I use another way of doing this, for example :

    NRF_UARTE0->ENABLE = (UARTE_ENABLE_ENABLE_Enabled << UARTE_ENABLE_ENABLE_Pos);
    NRF_UARTE0->BAUDRATE=NRF_UARTE_BAUDRATE_115200;
    NRF_UARTE0->PSEL.RXD=RX_PIN_NUMBER;
    NRF_UARTE0->PSEL.TXD=TX_PIN_NUMBER;
    NRF_UARTE0->CONFIG=NRF_UARTE_HWFC_DISABLED;
 
    NRF_UARTE0->TXD.PTR = (uint32_t)((uint8_t *)txUarteBuffer);
    NRF_UARTE0->TXD.MAXCNT = sizeof(txUarteBuffer);
    NRF_UARTE0->TASKS_STARTTX = 0;

    NRF_UARTE0->RXD.PTR = (uint32_t)((uint8_t *) rxUarteBuffer);
    NRF_UARTE0->RXD.MAXCNT = sizeof(rxUarteBuffer);
    NRF_UARTE0->TASKS_STARTRX = 1;

How to create an handler for event ?

if I use :

    NRF_UARTE0->INTENCLR = 0xFFFFFFFF;
    NRF_UARTE0->INTENSET = NRF_UARTE_INT_ENDRX_MASK;
    NVIC_ClearPendingIRQ(UARTE0_UART0_IRQn);
    NVIC_SetPriority(UARTE0_UART0_IRQn, NRFX_UARTE_DEFAULT_CONFIG_IRQ_PRIORITY);
    NVIC_EnableIRQ(UARTE0_UART0_IRQn);

I have :

<error> app: ERROR 3735928559 [Unknown error code] at .......\modules\nrfx\drivers\src\prs\nrfx_prs.c:81

PC at: 0x0002C49F

<error> app: End of error report

Someone can help me ?

Thanks in advance.

Best regards,

RE: NRF58232/SDK15 Where can I find sample code to use NRFX_UARTE ?

Håkon Alseth — Thu, 19 Apr 2018 12:02:59 GMT

In your case, I recommend that you omit the app_uart libraries, and use nrf_drv_uart.h (which wraps around calls to nrfx_) directly, by using the functions nrf_drv_uart_rx(...) and nrf_drv_uart_tx(...). The nrf_cli and our serializers use this directly (and app_uart as well, just that it sends/receives only 1 byte at the time).

Best regards,

Håkon

RE: NRF58232/SDK15 Where can I find sample code to use NRFX_UARTE ?

MPS — Wed, 18 Apr 2018 15:38:57 GMT

Hi Häkon,

Thanks for your answer.

I'm sorry but I'm always lost. We have lots of files (app_uart, nrf_uarte,nrfx_uarte, ...)

I need to be closer to the nRF52832 datasheet to manage all I want.

In this example, how to enable or disable events for uart_error_handle ? I don't want to systematically go into the handler at every byte received, otherwise eDMA is useless ...

Many thanks for your help, I'm not sure I'm very clear.

Best regards,