Has anyone used the UART serial port on this dongle on a Mac? Is the output supposed to show up in GDB or in the JLinkExe? Do I need a driver?
The instructions for the dongle have me disable some of the USB CDC drivers (without this, I cannot connect to the chip).
How do I see serial console output?
I'm using the following code:
Code
// P0.21-3 are red, green, blue LEDs on development dongle
GPIO_DIRSET = 7 << 21; // set pins to output
GPIO_OUTSET = 7 << 21; // set pins high -- LED off
GPIO_OUTCLR = 1 << 21; // set red led on.
UART_ENABLE = 1;
// GPIO UART
// P0.08 RTS
// P0.09 TXD
// P0.10 CTS
// P0.11 RXD
UART_PSELRTS = 1 << 8;
UART_PSELTXD = 1 << 9;
UART_PSELCTS = 1 << 10;
UART_PSELRXD = 1 << 11;
UART_CONFIG = UART_CONFIG_HWFC_ENABLED;
UART_STARTTX = 1;
char* hello = "Hello, world.\n";
uint8_t len = strlen(hello);
for(int i = 0; i < len; ++i) {
UART_TXD = hello[i];
while(!UART_TXDRDY) /* wait */; // HANGS here
UART_TXDRDY = 0;
}
GPIO_OUTSET = 1 << 21; // set pin low - red LED off.
GPIO_OUTCLR = 1 << 22; // set pin low - green LED on.
while(1);