USART in comp.arch.embedded

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Modification of Linux driver atmel_serial.c to use it in synchronous mode with external clock?

Started by wzab in comp.arch.embedded●13 years ago ● 1 reply

Hi, I need to use the USART in AT91SAM9260 working under Linux OS (quite old 2.6.29.3 version, due to compatibility with some parts of...

Hi, I need to use the USART in AT91SAM9260 working under Linux OS (quite old 2.6.29.3 version, due to compatibility with some parts of the system) to communicate with peripheral sending data in synchronous mode with clock 6MHz. The peripheral provides clock. The standard atmel_serial.c driver does not seem to support operation with external clock neither the synchronous mode. (In fact it...

AT91SAM7S256-128-64-321 USB and USART usage (clocking)

Started by jaac in comp.arch.embedded●18 years ago ● 2 replies

Clock UART USART USB

Hi, I want to know if it is possible to use at the same time the USB and UART peripheral on the AT91SAM7S256-128-64-321, with zero error on...

Hi, I want to know if it is possible to use at the same time the USB and UART peripheral on the AT91SAM7S256-128-64-321, with zero error on the UART part. The clocking scheme is what concerns me. As far as I understand you have the main clock MCK from an external crystal (or clock signal). Is MCK derived directly, I mean, does MCK have the same frequency as the external crystal? The UAR...