MCU don’t support SW_CLK and SW_DATA lines. Please let us know any other interface for programming.

[Nikhil]

Hello, external MCU don’t support SW_CLK and SW_DATA lines. Please let us know any other interface for programming nRF52810 from ext host?

[Simonr]

Hi Nikhil

I'm correct in assuming that you have another MCU that you want to use to program your nRF52810, right? If so, what external MCU is this, and do you want to program the nRF52810 periodically in the field? In that case, you can use one of our bootloaders, either Over-The-Air (OTA) or serial (UART/USB). The serial example should also be portable to SPI if your MCU doesn't support UART, you can see some cases regarding that here, and here. Note that the bootloader has to be flashed onto the nRF52810 beforehand either by using the SW_CLK and SW_DATA lines or during production.

Best regards,

Simon

[Nikhil]

We will receive the BLE Chipset which are un-programmed. These unprogrammed chipset will be mounted on our board. After the assembly, we have to program the BLE chipset through our host processor( i.MX6ULL). Our host processor doesn’t support Serial wire interface. Instead it can support UART interface. So please let us know if there is any dedicated UART pin in Nordic chipset for programming Nordic chipset (nRF52810-QCAA-R7) through Processor, else please suggest if any other method for programming. Will not be able to use programmer for programming firmware in each board as this will increase production cost and Can't use external programmer connector on board. Also, programming the nRF52810 will be periodically in the field.

[Simonr]

Hi Nikhil

I'm sorry, but an un-programmed nRF chip has to be programmed via the SWDIO pins, as it will need some application (bootloader) in order to convert serial data to flash commands. I suggest you look at some production houses that can program the chips for you. We usually recommend Hi-Lo Systems or Elnec for this purpose, but I'm sure there are other companies that can do this as well.

Best regards,

Simon

[Dmitry]

Hi Nikhil,

you can try to implement a software SWD on your MCU. There is a full description of SWD protocol, as long as other useful links in this thread.