I am using ~300khz SPI clock to try and download the DA14580 image via SPI master.
I am resetting the DA14580 by setting the RST pad to 1 for 10ms and then back to 0.
Then i wait 111ms (103 + 8 as stated in the AN-B-001 document).
Now i put the SPI CS low and start the booting sequence:
0 x70 0×50 0 x00 t紧随其后wo 'length' bytes and so on....
The AN-B-001 document says i expect to get 0x20 (NACK) or 0x02 (ACK) on the MISO line on the 4th byte i send.
Instead i am getting this:
MOSI MISO
0x70 0x00
0x50 0xD9
0x00 0x00
0xCD 0xC0 <-- MOSI=length low byte / MISO expect 0x20 or 0x02
0x0F 0xE7 <-- MOSI=length high byte
0x9F 0x83 <-- MOSI=CRC
0x01 0xCF <-- MOSI=Mode
0x00 0x83
What am i doing wrong?
I have an osciloscope image to show if needed.
Update: When using 512khz i am now able to receive the 1st ACK of the boot sequence but not the next one.
1. Do you have sample code i can get that implements the master spi boot from external MCU?
2. What if i am using 656.25khz instead of 512khz, what shoulf i do?
Hi Omri,
We will take a look at your issue and come back to you as soon as possible.
Best regards,
RvA(Dialog)
Hi Omri,
It appears that the SPI module is sensitive to reflections and spikes on the cable wires between the DA14580 and the external microcontroller. So the cause for your issue could be your setup. Short wire connections will help, but for a more detailed advice we need to have picture of your setup.
If you like to I can share my contact details with you so you can send a picture of your setup as well as the scope plots.
With kind regards, RvA (Dialog)
I'd be glad to share it all with you.
thanks
Hi Omri,
I have sent you an email. Thanks and best regards,
RvA(Dialog)
Hi Rva：
I meet the same problem with Omri, Could you help me ?
Thks
Hi aihuazou,
There could be a relation to the HW setup, As we have seen similar issues before which were solved by improving the setup. Here is a picture of the setup as we have it for testing
Basically the wiring is using short equal length wires, having sufficient ground returns. I would recommend to use ground returns from the connectors close to the signal lines.
Also the SPI clock is important. Note that The SPI master must provide a clock with a frequency of maximum 512 kHz. This is discussed in UM-B-013.
Best regards, RvA
Hi Rva :
Can you give me a reference design of the booting from master spi ,I use the demo of the "\DA1458x_SDK_3.0.6\host_apps\da1458x\proximity\reporter\host_proxr.uvproj" as the host MCU project and the "\DA1458x_SDK_3.0.6\dk_apps\keil_projects\proximity\reporter_fe_spi" as the slave mcu project, but I failed.
Thks
please, how write for send firmware to da14580 from mcu external Spi master?
thanks
Hi slamvan,
Please check the following project in the SDK .....\DA1458x_SDK\5.0.3\projects\host_apps\da1458x\proximity\reporter, in that demo project the 580 acts as an SPI master and sends the fw into another 580 over spi. Also the fw for downloading in the 580 is available in the ......\DA1458x_SDK\5.0.3\projects\target_apps\ble_examples\prox_reporter_ext_spi project.
Thanks MT_dialog