I am working with Concerto evaluation kit running the RT_sineFIRFFT example. I am trying to monitor a GPIO that is controlled by the C28 core from the M3 side.
C28
GpioG1CtrlRegs.GPCDIR.bit.GPIO70 = 1;
GpioG1DataRegs.GPCDAT.bit.GPIO70 = 1;
in timer interrpt
GpioG1DataRegs.GPCDAT.bit.GPIO70 = ~GpioG1DataRegs.GPCDAT.bit.GPIO70 & 0x0001; is working fine toggles led
On the M3 side i added HWREG(GPIO_PORTC_BASE + GPIO_O_DEN) |= GPIO_PIN_6; this sets the GPIODEN register to 0xd0 which I thought would enable me to read the pin using
ret = GPIOPinRead (GPIO_PORTC_BASE, GPIO_PIN_6);
I can read this GPIO when i control it on the M3 side using something like
GPIOPinConfigureCoreSelect(GPIO_PORTC_BASE, ( GPIO_PIN_6 ), GPIO_PIN_M_CORE_SELECT);
GPIOPinTypeGPIOOutput (GPIO_PORTC_BASE,GPIO_PIN_6);
GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_6, ~0);
could you please offer me some advice as to the setting for gpio registers for monitoring C28 controlled outputs/inputs from the M3 \
Thanks greatly
