Hi,
I try to use SPI to communicate with TI RF chip. But the first byte(register address) of a packet is not what I expected.
For example, I send 0x40 will become 0xC0, I send 0x80 will become 0x00.
The MSB is not correct, it become the same with bit 6.
Anyone know how to solve this?
Please!
Regards,
Max.

No, they just give me a link to a 6 months ago post, nothing fixed, nothing released, no updated, no comment, no reply

I read that discussion months ago.
The last message was 5 months ago.
It's only 'issue need to be fixed', 'somebody has temporary testing fixing lib'...etc.
There is no official fix or update from Onion.
I don't think it's a solution for normal users.

I sent 2 bytes, 0x7f 0x79, through SPI, using spi-tool in command line.
spi-tool -b 1 -d 32766 write 0x7f 0x79
I read values from spi bus using logic analyzer. The actual bytes sent are 0xff 0x79.
I tried to analyse why and when this happen. I found if the first byte, normally register address, equal or larger than 0x40, then the most significant bit become 1.
For example, 0x40 becomes 0xc0, 0x7f become 0xff.
I asked for a long time, waiting fix for a long time.
NO ANSWER, NO REPLY, seems there is no problem of SPI.
WHY?
This is a board for IoT, for many usages. How could you just leave this problem for such a long time?

Hi,
I try to use SPI to communicate with TI RF chip. But the first byte(register address) of a packet is not what I expected.
For example, I send 0x40 will become 0xC0, I send 0x80 will become 0x00.
The MSB is not correct, it become the same with bit 6.
Anyone know how to solve this?
Please!
Regards,
Max.