Content originally posted in LPCWare by John@MPL on Mon Jan 20 12:19:54 MST 2014
? Not receiving data on SPI Channel 2
I am using LPC11A14 HVQFN 33 and have the following set up using example code config.
Defines SSP_NUM 1; LOOPBACK_MODE 0; SSP_SLAVE 0; TX_RX_ONLY 1; USE_CS 0;
SPI Ctrl Reg set to 16 bit transfer.
Using SSP_Send( 1, my_value1, 1); // This sends my_value1 data to a SPI 16bit DAC and works OK.
I have changed SSP_Receive() to return a 16 bit value i.e. return_val = LPC_SSP1->DR; // As I only need a 16 bit value.
therefore I have:- my_value2 = SSP_Receive (1, dummy_test_val, 1);
In SSP_Receive(), existing code, LPC_SSP1->DR = 0xFFFF gives 16 clocks on SCLK1 and my device clocks the correct data into MISO-1 pin but does not appear in LPC_SSP1_DR register.
