Part Number: MSP430F5529
Tool/software: TI-RTOS
Using CCS 6.1.3 and TI-RTOS for MSP43x 2.20.0.06 with a 5529 Launchpad.
In the booster pack connection diagram, pins 3.4 and 3.3 are marked "UART RX" and "UART TX" respectively. I'm trying to get these pins to work as a UART to communicate to another microcontroller while using the standard UART to talk over the USB connection to the Launchpad. I'd also like to use TI-RTOS functions since I don't have much experience with low level microprocessor programming.
I've looked at forum question e2e.ti.com/.../421987 and attempted to use it as a model. The code in the forum question doesn't look quite the same as the code in my *5529.c and *5529.h, but I tried to do something analogous. I've also looked at e2e.ti.com/.../581883 but couldn't figure out how to make it apply. The code in *5529.c is different and if I paste the code from the forum question in it doesn't compile.
These are the changes I've made to my *5529.c and *5529.h files:
const UARTUSCIA_HWAttrs uartUSCIAHWAttrs[MSP_EXP430F5529LP_UARTCOUNT] = {
{
.baseAddr = USCI_A1_BASE,
.clockSource = USCI_A_UART_CLOCKSOURCE_SMCLK,
.bitOrder = USCI_A_UART_LSB_FIRST,
.numBaudrateEntries = sizeof(uartUSCIABaudrates)/sizeof(UARTUSCIA_BaudrateConfig),
.baudrateLUT = uartUSCIABaudrates
},
{
.baseAddr = USCI_A0_BASE,
.clockSource = USCI_A_UART_CLOCKSOURCE_SMCLK,
.bitOrder = USCI_A_UART_LSB_FIRST,
.numBaudrateEntries = sizeof(uartUSCIABaudrates)/sizeof(UARTUSCIA_BaudrateConfig),
.baudrateLUT = uartUSCIABaudrates
}, /* JDL second UART see e2e.ti.com/.../421987 */
};
const UART_Config UART_config[] = {
{
.fxnTablePtr = &UARTUSCIA_fxnTable,
.object = &uartUSCIAObjects[0],
.hwAttrs = &uartUSCIAHWAttrs[0]
},
{
.fxnTablePtr = &UARTUSCIA_fxnTable,
.object = &uartUSCIAObjects[1],
.hwAttrs = &uartUSCIAHWAttrs[1]
}, /* JDL second UART see e2e.ti.com/.../421987 */
{NULL, NULL, NULL}
};
and here (this is the part that looks different from the other questions):
void MSP_EXP430F5529LP_initUART(void)
{
/* P4.4,5 = USCI_A1 TXD/RXD */
GPIO_setAsPeripheralModuleFunctionInputPin(GPIO_PORT_P4,
GPIO_PIN4 | GPIO_PIN5);
/* P3.3,4 = USCI_A0 TXD/RXD */
GPIO_setAsPeripheralModuleFunctionInputPin(GPIO_PORT_P3,
GPIO_PIN3 | GPIO_PIN4);
/* JDL second UART see e2e.ti.com/.../421987 */
/* Initialize the UART driver */
UART_init();
}
In *5529.h:
typedef enum MSP_EXP430F5529LP_UARTName { MSP_EXP430F5529LP_UARTA1 = 0, MSP_EXP430F5529LP_UARTA0 = 1, /* JDL 2nd UART */ MSP_EXP430F5529LP_UARTCOUNT } MSP_EXP430F5529LP_UARTName;
In Board.h:
#define Board_UART0 MSP_EXP430F5529LP_UARTA1
#define Board_UART1 MSP_EXP430F5529LP_UARTA0 /* JDL 2nd UART e2e.ti.com/.../
I'm sure I'm doing something hilariously wrong, or missed a comma somewhere.
When I run my code (shown below) Board_UART0 opens and work fine, but Board_UART1 returns a null pointer.
UART_Params_init(&uartParams);
uartParams.writeDataMode = UART_DATA_BINARY;
uartParams.readDataMode = UART_DATA_BINARY;
uartParams.readReturnMode = UART_RETURN_NEWLINE; // string is read until it reaches a newline
uartParams.readEcho = UART_ECHO_OFF;
uartParams.baudRate = 9600;
uartPC = UART_open(Board_UART0, &uartParams);
uartParams.baudRate = 38400; // to collector board
uartCB = UART_open(Board_UART1, &uartParams);
I attached my project (I hope that works how I expect it to). Any clues on how to get that second UART to work in TI-RTOS?
