How are VDDA, AGND and VREFP connected to the MCU-Pins on NucleoH723ZG?
Hello everyone,
I am using the NucleoH723ZG board and I'd like to use the internal reference voltage for ADC-purposes. Initialising the VREFBUF...
VREFBUF->CSR &= ~VREFBUF_CSR_VRS_Msk; //Voltage Reference set to 2.5V
VREFBUF->CSR &= ~VREFBUF_CSR_HIZ_Msk; //VREF+ pin is internally connected to the voltage reference buffer output
VREFBUF->CSR |= VREFBUF_CSR_ENVR; //Enable Voltage Reference
while(!((VREFBUF->CSR) & VREFBUF_CSR_VRR)) //Wait for voltage reference ready
{
;
}
...the code gets stuck in the while-loop. (The clock is also enabled for VREF) Is it possible that this is not intended using the Nucleo Board? I wonder how the VREFP signal on the Nucleo board is connected to the Microcontroller (respectively to the VDD?). Unfortunately I couldn't found the answer in the user manual of the nucleo board.
Thank you for your help.
Dietmar
