MSP430F6638: Port_Mapping on MSP430F6638

You forgot the P2SEL/P2DIR configuration.

The interrupt is independent from the pin configuration; it goes to the same interrupt vector. (On the F6638, the USCI_A0 vector is at 0xFFF0.)

Sorry I did not add it in my question.
I do have:
P2SEL |= 0x0C; // Assign port mapping P2.2 to UCA0RXD and P2.3 to UCA0TXD 0000 1100
P2DIR |= 0x0C; // P2.3 to UCA0TXD

Do you have it working?

Her is my init Port_Mapping and Init_UART code:

void Port_Mapping_RS232(void)
{
// Disable Interrupts before altering Port Mapping registers
__disable_interrupt();
// Enable Write-access to modify port mapping registers
PMAPPWD = 0x02D52;

#ifdef PORT_MAP_RECFG
// Allow reconfiguration during runtime
PMAPCTL = PMAPRECFG;
#endif

P2MAP2 = PM_UCA0RXD;
P2MAP3 = PM_UCA0TXD;

// Disable Write-Access to modify port mapping registers
PMAPPWD = 0;
#ifdef PORT_MAP_EINT
__enable_interrupt(); // Re-enable all interrupts
#endif
}

//-----------------------------------------------
void Init_UART(void)

{ // 0001 1000
P2SEL |= 0x0C; // Assign port mapping P2.2 to UCA0RXD and P2.3 to UCA0TXD 0000 1100
P2DIR |= 0x0C; // P2.3 to UCA0TXD

UCA0CTL1 |= UCSWRST; // **Put state machine in reset**

// This 115200 code is working on TI EVM;
// Max. Error Tx -0.6 to 0.8;
// Max. Error Rx -1.8 to 1.1;
UCA0CTL1 = UCSSEL_2; // DCO = SMCLK = 8MHz
UCA0BR0 = 69; // 8MHz/115200 = 69,44. 69 = 0x45
UCA0BR1 = 0; // Baudrate bliver: 8M / ( (4 * 69 + 4 * 70)/8) = 115107,9 (Der deles med 69,5)
UCA0MCTL = UCBRS_4 + UCBRF_0; // Modulation UCBRSx=4, UCBRFx=0

UCA0CTL1 &= ~UCSWRST; // **Initialize USCI state machine**
UCA0IE |= UCRXIE; // Enable USCI_A0 RX interrupt
}

Hi Clemens,

 Thanks for the hint, highly appreciated, but I don’t believe I’m affected but PORT15 or PMAP1.

 PORT15, I’m not single stepping.

 PMAP1 is only when clearing unselected inputs to mapped module.

 

I would highly applicate if somebody from TI would either confirm:

1)

That it should work and they have a confirmed design where it’s working.

 

2)

That it does not work for some reason.

 Regards