BL654 UART question

RE: BL654 UART question

JONATHAN LL — Mon, 18 Oct 2021 05:58:31 GMT

Nice to se that you found a solution, feel fre to mark it as suggested answer if there are no further issues.

Regards,
Jonathan

RE: BL654 UART question

Bob Faist — Fri, 15 Oct 2021 17:27:38 GMT

Solved issue with crash.

CONFIG_BT_NUS_THREAD_STACK_SIZE=4096

Increased stack size from 1024 to 4096

Seeing data using BlueLight android app.

RE: BL654 UART question

Bob Faist — Fri, 15 Oct 2021 14:20:12 GMT

I use the Mac app "CoolTerm" to read the serial port which returns data like this:

pos: 168 1 255
temp: 75.53 F

CTS/DTR/XON flow control are all turned off in CoolTerm.

I can check with the STM32 developer and see about the flow control.

RE: BL654 UART question

JONATHAN LL — Fri, 15 Oct 2021 14:10:49 GMT

Hi,

peripheral_uart example should suffice, and it looks correct to my understanding of how you have set it up. So i am curious how the STM32 micro is configured, does it have flow controlled? how is it connected? Do you have schematics of how they interface?

I don's see anything of concern in the setup so it leads me to think that there is something with the interface to the STM32 or how it is configured.

Regards,
Jonathan

RE: BL654 UART question

Bob Faist — Fri, 15 Oct 2021 13:52:44 GMT

*** Booting Zephyr OS build v2.6.0-rc1-ncs1  ***
[00:00:02.292,755] [0m<inf> peripheral_uart: UART_RX_BUF_REQUEST[0m
[00:00:02.298,583] [0m<inf> fs_nvs: 8 Sectors of 4096 bytes[0m
[00:00:02.298,583] [0m<inf> fs_nvs: alloc wra: 7, f90[0m
[00:00:02.298,583] [0m<inf> fs_nvs: data wra: 7, d8[0m
[00:00:02.298,706] [0m<inf> sdc_hci_driver: SoftDevice Controller build revision: 
                                         58 5d 8b 31 54 67 00 e9  b8 4a a7 df a9 9c e4 1c |X].1Tg.. .J......
                                         b3 0b ce 74                                      |...t             [0m
[00:00:02.302,459] [0m<inf> bt_hci_core: No ID address. App must call settings_load()[0m
[00:00:02.302,459] [0m<inf> peripheral_uart: Bluetooth initialized[0m
[00:00:02.314,849] [0m<inf> peripheral_uart: Starting Nordic UART service example
[0m
[00:00:02.314,880] [0m<inf> peripheral_uart: ble_write_thread after ble_init_ok[0m
[00:00:18.957,458] [0m<inf> peripheral_uart: UART_RX_BUF_RELEASED[0m
[00:00:18.957,458] [0m<inf> peripheral_uart: UART_RX_BUF_REQUEST[0m

Above is the log. It crashes with at "z_arm_usage_fault".

The custom board is a BL654 and STM32 reading data from temperature and gyroscope sensors.

Just prototype stage. I copied the "bl654_dvk" board DTS file and modified for our custom board.

Some of the DTS fiie:

chosen {
 zephyr,console = &uart0;
 zephyr,shell-uart = &uart0;
 zephyr,uart-mcumgr = &uart0;
 zephyr,bt-mon-uart = &uart0;
 zephyr,bt-c2h-uart = &uart0;
 zephyr,sram = &sram0;
 zephyr,flash = &flash0;
 zephyr,code-partition = &slot0_partition;
 };

&uart0 {
 compatible = "nordic,nrf-uarte";
 current-speed = <115200>;
 status = "okay";
 tx-pin = <6>;
 rx-pin = <8>;
 rts-pin = <5>;
 cts-pin = <7>;
};

RE: BL654 UART question

JONATHAN LL — Thu, 14 Oct 2021 13:19:19 GMT

Hi,

Could you share logs of what happens when it crashes?

What type of custom board is it ? Are you sure that you have correct overlay/board file?

Regards,
Jonathan