boot loader nRF52810

[dnguyen2019]

HI,

I need help on the bootloader. I could not get it work.

thanks,

David

[Vidar Berg]

Hi David,

I've tested this with SDK 16.0.0. I didn't make any modifications to the bootloader except for changing the public key. To test it, unzip the attached zip and program the softdevice and bootlaoder in \dfu_test\bl+sd. Then try to do DFU with the included app_dfu.zip package. 

dfu_test.zip

Note: there seems to be a bug in the latest pre-release of nrfutil. Please make sure you're using nrfutil v.5.2.0. https://devzone.nordicsemi.com/f/nordic-q-a/54202/error-of-invalid_object-when-using-nrf-connect-desktop-after-generating-dfu-zip-file-with-new-keys

[dnguyen2019]

Hi Vidar,

Do you have the document for bootloader?

How it initializes and sends data package to from the APPs to bootloader?

I mean the shakehand of the communication between the Apps & bootloader. 

Thanks,

David

[Vidar Berg]

Hi David,

The Message sequence charts in the bootloader documentation illustrate the packet exchange between the app (dfu master) and the bootloader. 

Regards,

Vidar

[dnguyen2019]

Hi Vidar,

Following is my uart txd code:

Case #1: it is good. I sends 10 bytes and it receives 10 bytes

void sendData()
{
uByte Array[10] = {0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A};
HAL_UART_Transmit(&huart1, (uint8_t *) Array, 10, 200);
}

case#2: it does not work. I sends 10 bytes but it receives 182 bytes. Do you know why?

void sendData()
{
uByte Array[10] = {0x01,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA};
HAL_UART_Transmit(&huart1, (uint8_t *) Array, 10, 200);
}

[dnguyen2019]

Hi Vidar,

I sent data from other CPU to the nRF52810 CPU over UART

Thanks,

David