ncs1.61 peripheral_uart : enable uart when connected and disable uart when disconnected

RE: ncs1.61 peripheral_uart : enable uart when connected and disable uart when disconnected

Kazi Afroza Sultana — Fri, 19 Nov 2021 18:40:44 GMT

Hello Robert,

That's nice to hear. Both of the issues (Advertising and off and on UART during Runtime) are solved.

Best Regards,

Kazi Afroza Sultana

RE: ncs1.61 peripheral_uart : enable uart when connected and disable uart when disconnected

RHeine — Fri, 19 Nov 2021 14:45:24 GMT

Hi Kazi,

I found the error, I wrote "pm_device_state_set(uart, PM_STATE_ACTIVE, NULL, NULL);"

instead of "pm_device_state_set(uart, PM_DEVICE_STATE_ACTIVE, NULL, NULL);"

Now it's working.

Regards,

Rob.

RE: ncs1.61 peripheral_uart : enable uart when connected and disable uart when disconnected

Kazi Afroza Sultana — Fri, 19 Nov 2021 11:08:00 GMT

Internet connection was going online and offline simultaneously. It shows my replies did not send so I pressed reply 2 times. and you got the 2 same replies.

RE: ncs1.61 peripheral_uart : enable uart when connected and disable uart when disconnected

RHeine — Fri, 19 Nov 2021 10:48:20 GMT

Why do you send me the same answer ?

RE: ncs1.61 peripheral_uart : enable uart when connected and disable uart when disconnected

Kazi Afroza Sultana — Fri, 19 Nov 2021 10:44:20 GMT

Hello Robert,

You can use the low-power UART driver implementation if you want to wake up on UART and keep the current consumption low.

The protocol used by this driver implements two control lines ( the Request line (REQ) and the ready line (RDY) to allow disable the UART during the idle period Low power UART driver — nRF Connect SDK 1.7.99 documentation (nordicsemi.com). So it requires extra flow control pins on the UART besides Rx-pin and Tx-pin. So, the device tree should look like this

&uart1{

compatible = "nordic, nrf-urate";

status = "okay";

rx-pin =<44>;

tx-pin = <45>;

baudrate =<1000000>;

lpuart: nrf-sw-lpuart { // this part is the child node of the UART instance that extends standard UART configuration with the control lines REQ and RDY

compatible = "nordic, nrf-sw-lpuart";

status = "okay";

label = "LPUART";

req-pin =<46>;

rdy-pin = <47>;

};

Apart from this, here is a sample of turning off and on the UART during run-time: https://github.com/nrfconnect/sdk-zephyr/tree/main/samples/boards/nrf/system_off

Best Regards,

Kazi Afroza Sultana

RE: ncs1.61 peripheral_uart : enable uart when connected and disable uart when disconnected

RHeine — Fri, 19 Nov 2021 10:41:19 GMT

Hi,

I don't want to use the LPUART, I need flow control. I allready base my application on peripheral_uart.

I just want to use peripheral_uart with the low consumption during advertising, it's why I want to disable uart during advertising (disconnect) and enable uart when the device is connected.

RE: ncs1.61 peripheral_uart : enable uart when connected and disable uart when disconnected

Kazi Afroza Sultana — Fri, 19 Nov 2021 10:34:10 GMT

Hello Robert,

You can use the low-power UART driver implementation if you want to wake up on UART and keep the current consumption low.

&uart1{

compatible = "nordic, nrf-urate";

status = "okay";

rx-pin =<44>;

tx-pin = <45>;

baudrate =<1000000>;

lpuart: nrf-sw-lpuart { // this part is the child node of the UART instance that extends standard UART configuration with the control lines REQ and RDY

compatible = "nordic, nrf-sw-lpuart";

status = "okay";

label = "LPUART";

req-pin =<46>;

rdy-pin = <47>;

};

Apart from this, here is a sample of turning off and on the UART during run-time you can look at: https://github.com/nrfconnect/sdk-zephyr/tree/main/samples/boards/nrf/system_off

Best Regards,

Kazi Afroza Sultana

RE: ncs1.61 peripheral_uart : enable uart when connected and disable uart when disconnected

RHeine — Fri, 19 Nov 2021 08:02:52 GMT

Good Morning Kazi,

Thank you for your answer.

" 'Do you know what I should do to wake up the uart ?'' -- I will look at tis new query soon. "

Do you have some news about how to wake up the uart ?

Best regards,

Rob.

RE: ncs1.61 peripheral_uart : enable uart when connected and disable uart when disconnected

Kazi Afroza Sultana — Fri, 19 Nov 2021 07:04:11 GMT

Hello Robert,

Good Morning.

Your advertising picture looks normal. And you are right with the configuration for the first 2.

The last configuration will not work. Because we can not disable Serial from both prj.conf and config file (hci_rpmsg.conf) from the child image folder. In the prj.conf file it should be like this #CONFIG_SERIAL=n.

Best Regards,

Kazi Afroza Sultana

RE: ncs1.61 peripheral_uart : enable uart when connected and disable uart when disconnected

RHeine — Thu, 18 Nov 2021 10:42:01 GMT

I tryed:

#CONFIG_SERIAL=y

#CONFIG_SERIAL=n

" into prj.conf

That advertising.

CONFIG_SERIAL=y

#CONFIG_SERIAL=n

" into prj.conf

That advertising too.

#CONFIG_SERIAL=y

CONFIG_SERIAL=n

" into prj.conf

That do not advertising.

RE: ncs1.61 peripheral_uart : enable uart when connected and disable uart when disconnected

RHeine — Thu, 18 Nov 2021 10:27:08 GMT

Hi Kazi,

"Could you please try this first ? 1. #CONFIG_SERIAL=y" and "#CONFIG_SERIAL=n" into prj.conf 2. CONFIG_SERIAL=n in your hci_rpmsg.conf file"

it's already the configuration I have.

RE: ncs1.61 peripheral_uart : enable uart when connected and disable uart when disconnected

Kazi Afroza Sultana — Thu, 18 Nov 2021 10:06:12 GMT

Hello Robert,

Good Morning.

Sorry I had a typo in my reply. Instead of witing network core I wrote application core 2times.

Actually, I meant that you have to add CONFIG_SERIAL=n in your hci_rpmsg.conf file. That means you disable the SERIAL from network core.

''I'm not sure to understand your reply, I tryed to coment "#CONFIG_SERIAL=y" and "#CONFIG_SERIAL=n" into prj.conf, so I have no config_serial.''

Yes, this is correct set up in prj.conf.

Could you please try this first ? 1. #CONFIG_SERIAL=y" and "#CONFIG_SERIAL=n" into prj.conf 2. CONFIG_SERIAL=n in your hci_rpmsg.conf file

'Do you know what I should do to wake up the uart ?'' -- I will look at tis new query soon.

Best Regards

Kazi Afroza Sultana

RE: ncs1.61 peripheral_uart : enable uart when connected and disable uart when disconnected

RHeine — Thu, 18 Nov 2021 09:25:45 GMT

Good Morning Kazi,

Thank very much you for your answer and your help.

I'm not sure to understand your reply, I tryed to coment "#CONFIG_SERIAL=y" and "#CONFIG_SERIAL=n" into prj.conf, so I have no config_serial.

After that advertising restart and I have a wonder consumption during advertising, arround 110uA !

But I can not use the uart when I'm connected, I tryed to send "azerty" from Rx Characteristic nothing was received by putty, after the third try it make my an error 133 Gatt Error and error 8 Gatt Conn Timeout.

When I made a reset, the consumtion start to be around 770uA and after connect and disconnect it fall around 117uA.

It look like the uart do not wake up after connected. I think I forgot something to wake up the uart when I'm connected. And I should maybe put the function uart_0_disable() into uart_init() to start at a low consumption after reset.

Do you know what I should do to wake up the uart ?

devzone.nordicsemi.com/.../peripheral_5F00_uart_5F00_disable_5F00_b-_2800_2_2900_.zip

Best Regards,

Rob.

RE: ncs1.61 peripheral_uart : enable uart when connected and disable uart when disconnected

Kazi Afroza Sultana — Wed, 17 Nov 2021 15:14:43 GMT

Helo Robert,

I think you have disable the serial from Application core as well. By disabling CONFIG_SERIAL = n from prj.conf file. You just need to disable SERIAL from Network core ( you have done this in hci_rpmsg.conf). That's why it has lost connection from Application core and you are not getting advertising data.

I tested your code with this set up and got the following output from during current measurement.

Could you please try this and observe what is the output?

Best Regards

Kazi Afroza Sultana

RE: ncs1.61 peripheral_uart : enable uart when connected and disable uart when disconnected

RHeine — Wed, 17 Nov 2021 09:26:30 GMT

Good morning Kazi Afroza Sultana,

Thank you for your answer.

Just before your answer, I made progress.

I discover that the error disappears when I put "CONFIG_SERIAL=n".

Then I discover the blog : Optimizing Power on nRF5340 SoC Designs

https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/optimizing-power-on-nrf53-designs

I tryed to put into prj.conf:

"CONFIG_PM=y
CONFIG_PM_DEVICE=y"

I still have no error but there is no more advertising ...

What should I do to continu advertising ?

devzone.nordicsemi.com/.../peripheral_5F00_uart_5F00_disable_5F00_b.zip

Best Regards,

Rob.

RE: ncs1.61 peripheral_uart : enable uart when connected and disable uart when disconnected

Kazi Afroza Sultana — Wed, 17 Nov 2021 08:56:51 GMT

Hello Heine,

Good Morning.

I have looked at your code and configuration file. The error you get 'undefined reference to 'pm_device_state_set'. The issues may be not related to the UART. It seems that pm_device_state_set() is only defined if CONFIG_PM is set the prj.conf. You can try this first. Set the CONFIG_PM and see if it defined then.

Best Regards,

Kazi Afroza Sultana

RE: ncs1.61 peripheral_uart : enable uart when connected and disable uart when disconnected

RHeine — Tue, 16 Nov 2021 07:56:29 GMT

Additionnal information:

Hi,

I found this ticket "UART Enable/Disable with sdk v1.3.0": https://devzone.nordicsemi.com/f/nordic-q-a/63714/uart-enable-disable-with-sdk-v1-3-0

I tryed to use this code:

void uart_0_disable(void)
{
   struct device *uart0_dev = device_get_binding("UART_0");
    device_set_power_state(uart0_dev, DEVICE_PM_OFF_STATE, NULL, NULL);

    gpio_pin_configure(gpio_dev, PIN_UART_0_RX, GPIO_OUTPUT);
    gpio_pin_set(gpio_dev, PIN_UART_0_RX, 0);

    gpio_pin_configure(gpio_dev, PIN_UART_0_TX, GPIO_OUTPUT);
    gpio_pin_set(gpio_dev, PIN_UART_0_TX, 0);
}

void uart_0_enable(void)
{
    struct device *uart0_dev = device_get_binding("UART_0");
    device_set_power_state(uart0_dev, DEVICE_PM_ACTIVE_STATE, NULL, NULL);
}

I modified the code for sdk 1.6.1 like this:

#include <pm/state.h>
#include <pm/device.h>
#include <pm/pm.h>

#include <drivers/gpio.h>

void uart_0_disable(void)
{

   uart = device_get_binding(DT_LABEL(DT_NODELABEL(uart0)));
   pm_device_state_set(uart, PM_DEVICE_STATE_OFF, NULL, NULL);

   gpio_pin_configure(uart, 22, GPIO_DISCONNECTED);
   gpio_pin_set(uart, 22, 0);

   gpio_pin_configure(uart, 20, GPIO_DISCONNECTED);
   gpio_pin_set(uart, 20, 0);

}

void uart_0_enable(void)
{
uart = device_get_binding(DT_LABEL(DT_NODELABEL(uart0)));
pm_device_state_set(uart, PM_STATE_ACTIVE, NULL, NULL);
}

But I still have this error:

/main.c:116: 'undefined reference to `pm_device_state_set'

collect2.exe: error: ld returned 1 exit status

Could anyone help me to resolve this error, please ?

Best Regards,

Rob.