Part Number: TMS570LS3137
Other Parts Discussed in Thread: HALCOGEN
Tool/software: Code Composer Studio
I am testing SPI2 module with the digital loopback setting.
In particular, I am using Halcogen's APIs to configure SPI and the communication.
For now, I am interested in using only SPI2 in master mode, having it send messages in loopback and read the generated messages. Yet, it always fails and nothing seems to be sent.
This is the situation after running my spiInit():
In particular, I want it to be interrupt-driven.
For now, the loopback is not set, but after calling
spiEnableLoopback(spiREG2, Digital_Lbk);
I get:
- DIn = 0x103
- IoLpbkTstCtrl = 0xA00
From the technical reference, I expected to find the LOOPBACK bit in SPIGCR1 set, but by debugging I find out that GlbCtr1 maintained its value (0x01000003).
To send data I use spiSendData(), with
- CS_HOLD = false
- WDEL = false
- DFSEL = SPI_FMT_0
- CSNR = 0
To receive data I use spiGetData(), with
- CS_HOLD = false
- WDEL = false
- DFSEL = SPI_FMT_0
- CSNR = 0
What is the issue here? Am I missing something?
I thank you in advance.
Jarrel
