Hi Sir,
There was a mistake while I provide ALE signal to the Module. Now I am able to access the registers and read and write them. But I still have problem of transmitting the data. I have configured SJA1000T as Transmitter and Flex can of MPC5777C as a receiver. I am working on transmission since three days. But things have not moved any further. Please verify hardware connections in attached picture and below software configuration.
Software is as below.
Init function :
Power on Reset check.
Clock div register : Set Pelican mode and CBP
BTR0, BTR 1 as configured for 1Mbps
AMRx = 0xFF
ACRx = 0x00
OCR = 0x1A (Normal mode; Push-Pull for TX0) (TX1 is left unconnected in circuit)
Interrupts disabled
Bring to Normal mode by Making MOD.RM = 0
TX function :
TX frame info : (16 address) = 10001000 (Extended Data frame, length
From address 17 to 20 : Identifier
From 21 to 28 : Data bytes
Check TBS and TCS in status register. If buffer is free, providing TR in CMD register.
Provided some no_ops
Then checking status register Transmit status in do while loop: It says the data is transmitted. But Flex Can didn't receive any data at all.
I tried connecting one SJA as TX and one SJA as RX. But some invalid data is received. Even I changed my Identifier and Data bytes, I'm receiving the same invalid data.
Secondly, I tried to receive data from Flex Can, SJA module is receiving the data. But when reading receive buffers address 16 to 29, every byte is read as 0x0d. Surely this is not valid. So, I read FIFO registers from 32 to 100. From 32 to 44, Same 0x0d is read. From 45 to 57, the id and data i sent is stored. So, receiving is also functioning bad.
