Booting from SPI master

Forums:

Dialog Smartbond Bluetooth Low Energy – Software

Hi,
我有点困惑- b - 001”DA1458x Booting from serial interfaces".
In Table 2: SPI Master boot protocol, when ACK/NACK will be received?
- when sending the zero byte
or
- when sending the LS byte of the length?
Also, according the last row of the table (byte nr.8), when sending the first byte of the data, then will receive the ACK/NACK for the code/mode,
but that doesn't correspond with the next table.
I have feeling that all values for MISO column are moved one row down.

Booting from external SPI master issue

Forums:

Dialog Smartbond Bluetooth Low Energy – Software

Hi,

I am able to load code @startup using UART but unable to load the same from external SPI master.

I am using CPOL = 0 , CPHA = 0 and a clock of 330 kHz. The CS line is held logic low the whole time without any toggling.

I am using 0 as mode byte ( Byte nr = 6)
I get the Preamble ACK and Length ACK (0x2) at Byte nr. 3 and 6 as expected. But I get a value 0x7F at Byte nr. 8 .