Hi,
I am working on a CC2640 4x4 custom application. I am using BLE stack 2.2, TI RTOS 2.18, CCS 6.1.2,
sensor controller studio 1.3.0, XDS 200 debugger.
I am trying to create an SPI task using Sensor Controller. All I did from the SCS was to create a
SPI serial interface for one slave, use system CPU alert, RTC based execution scheduling and delay
insertion. I checked the balanced 1.1 MHz bit rate option. The slave datasheet says the max bitrate
it can handle is 1 MHz. Does this mean the sensor controller SPI is too fast to communicate with this
slave?
I was able to generate the code and see the memory usage displayed OK. I am able to connect to the
XDS 200 from sensor controller studio. When I test the task, I am probing the chip select and MOSI
signals on the scope. I am not seeing the chip select activate on the scope.
What might be going wrong in this step? I also created a main_tirtos.c and used this to add to the
simple_peripheral project. I will have more questions when I get past my first question.
Thank you,
Priya
Here is the initialization code:
fwScheduleTask(1);
Here is the execution code:
spiBegin(SPI_POL0_PHA1, AUXIO_SPI_CSN_ACS);
//Power reset
spiTx8bit(SPI_POL0_PHA1, 0xF0);
spiEnd(SPI_POL0_PHA1, AUXIO_SPI_CSN_ACS);
fwDelayUs(200, FW_DELAY_RANGE_200_US);
spiBegin(SPI_POL0_PHA1, AUXIO_SPI_CSN_ACS);
//Watchdog off
spiTx8bit(SPI_POL0_PHA1, 0x9E);
spiEnd(SPI_POL0_PHA1, AUXIO_SPI_CSN_ACS);
fwDelayUs(10, FW_DELAY_RANGE_10_US);
fwGenAlertInterrupt();
// Schedule the next execution
fwScheduleTask(1);
