Hi,
we are trying to bringup the USART3 of the AT91RM9200 cpu as the debug console.
We extended the sources accordingly as it was done for USART0 and USART1.
#ifdef CONFIG_USART3 *AT91C_PIOA_PDR = AT91C_PIO_PA5 | AT91C_PIO_PA6; *AT91C_PIOA_BSR = AT91C_PIO_PA5 | AT91C_PIO_PA6; /* hardware is connected on PA5 and PA6, so selecting the peripheral B functionality */ *AT91C_PMC_PCER |= 1 << AT91C_ID_USART3; /* enable clock */ #endif
After making the changes, we don't see the USART 3 working as expected, we don't see any signals coming on the TXD and RXD ports
We started reading the registers, for some reason the PMC_PCER turns out to be zero,
Is there anyone aware about any USART 3 related issues for AT91RM9200.
Thanks,Balajee