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UART starts after a soft reboot

Arnaud Chopard-lallier
Prodigy 230 points

Hello there!

Strange behaviour: the UART of my TMS320DM6432 runs correctly only after a soft reboot.

After powering up the DSP, nothing appears on the RS232 outputs. When I ask a reboot by calling this...

#define reboot_function ((void (*)(void))0x00100000)

...the UART starts correctly!

Did you ever see something like that?

Here is my config:

uart0DevParams.inputFreq       = PSP_UART_MODULE_CLOCK;
uart0DevParams.fifoEnable      = TRUE;
uart0DevParams.opMode          = PSP_OPMODE_POLLED;
uart0DevParams.loopbackEnabled = FALSE;
uart0DevParams.baudRate        = PSP_UART_BAUD_RATE_9_6K;
uart0DevParams.stopBits        = PSP_UART_NUM_STOP_BITS_1;
uart0DevParams.charLen         = PSP_UART_CHARLEN_8;
uart0DevParams.parity          = PSP_UART_PARITY_NONE;
uart0DevParams.rxThreshold     = PSP_UART_RX_TRIG14;
uart0DevParams.fc.fcType       = PSP_UART_FC_TYPE_NONE;
uart0DevParams.fc.fcParam      = PSP_UART_FC_NONE;

regards,

Arnaud