Hello,
I am using a Wiced board BCM920737TAG_Q32 and trying to configure it as a SPI master board. After programming, when I see over the oscilloscope I can see just the SCLK signal of 9MHz but I am not able to see any data that I transmit over MOSI line.
The CS and MOSI are also configured in the function but I cant see them changing in the O-scope. I am using the example code of spi_pressure_sensor.c for testing the SPI.
I also did created my own smart design project and check SPI in the configuration. Then I used the sample functions defined in the pdf "WICED Smart Hardware interfaces in the application note" to transmit data over SPI: spiffy2_master_send_receive_byte(UINT8 byteToSend); , I actually declared this function outside of all the functions. and then called it in an interrupt handler.
UINT8 spiffy2_master_send_receive_byte(UINT8 byteToSend)
{
BYTE byteReceived;
// SPIFFY2 is now ready to be used.
// Assert chipselect by driving O/P on the GPIO
gpio_setPinOutput(CS_PORT, CS_PIN, CS_ASSERT); // Assert chipselect
// Tx one byte of data
spiffyd_txData(SPIFFYD_2, 1 ,&byteToSend); // Send a byte
// Rx one byte of data
spiffyd_rxData(SPIFFYD_2, 1, &byteReceived); // Read 1 byte
// Deassert chipselect
gpio_setPinOutput(CS_PORT, CS_PIN, CS_DEASSERT); // Deassert chipselect
return byteReceived;
}
