Hi !,
My motto is to transfer data to SCI module through DMA. But while doing the same, irrespective of data length, only first and last bytes of my data are getting transmitted (checked this through docklight).
DMA control packet is configured as below: channel 7 is used (random selection)
{
source address: address of an array which is declared as a global array variable.
destination address: address of SCI3->TD.
channel control : zero
frame count: 10 (size of declared array is 10)
element count: 1
element and frame destination offsets: 0 (for both source and destination)
port assign: PORTA READ, PORTB WRITE
read size and write size: 8 bites (as source array is declared as uint8)
transfer type: BLOCK TRANSFER
source address mode: address increment
destination address mode: fixed address
auto initialization OFF.
set control packet in DMA RAM (channel 7)
enable channel 7
waiting until the SCI TD is ready to receive next character.
ema dma
waiting until BTC flag for channel 7 set
}
after BTC flag getting SET, only first and last bytes are getting transmitted.
NOTE: the transmission is going well, when source data is given directly to SCI->TD without DMA
