hello I am using 2 TMS570LC43X Launchpad , mibspi3 is Communication between 2MCU'S one is master and another is one slave ,but iam not able receive data on slave.
I am using 4wire MIBSPISIMO,MIBSPIMOSI,MIBSPICS2 ,MIBSPI CLK. can you please help me regarding this.
here is my code m570_master.rar570_slave.raraster and slave code .
in that slave example project i tried the debug but here after mibspi transfer its not coming.
Hi Srinivasa,
After opening your master project i could see analog loopback code, and may be this code is not working on your side because of this:
After modifying the above code as below then loop back is working fine at my end:
Here is the result after first iteration.
Here is the tested project:
Now coming to the without loopback code:
1. My first doubt is, which chip select you want to use?
On transfer group0 configuration you mentioned CS2
But on the port configurations you didn't enable the CS2 functionality to the SPI and you just keep it as GIO but instead of you enabled CS0 functionality.
2. If you really want to use CS2 as chip select then do the configurations as below:
2. If you are not using ENA functionality then please configure them into GIO mode in both master and slave side.
I guess may be you changed because of my ENA example provided, here it is not required so please change it to the GIO mode.
3. And i could see you enabled output direction for CLK pin on slave side, this should be input.
So configure as below:
4. And also CS2 pin direction in slave side also should be input, so configure it as below:
After doing above modifications now remove the loopback code on master side and try to test it. Here are the codes after modifications from my side. Please test it and update me:
On testing purpose first make sure to connect all signals properly including CS2 between master and slave. And after the connections first turn on the slave first and after that turn on the master, this will ensure the synchronization.
--
Thanks & regards,
Jagadish.
--
Thanks & regards,
Jagadish.
