I have made a bare metal "Hello World" program for the Netduino2. I have pushed it here:
https://github.com/skintigh/baremetal_netduino2 It should output "Test 1/4" to USART 1, "Test 2/4" to USART 2, "Test 3/4" to USART 3 and "Test 4/4" to UART 4. What actually happens in QEMU is only the first string is output. That may be a command line argument error on my part, so for a sanity check I put printf statements in the function stm32f2xx_usart_write in qemu/hw/char/stm32f2xx_usart.c and recompiled qemu. The result is text sent to UART1 and UART4 make is to the function (though only 1 is output), while writes to 2 and 3 simply disappear and never make it to that function. I assumed all writes to UARTs would go to that function. Am I doing something dumb? Is this a bug? Any help would be greatly appreciated. Thanks, Seth
