MSP430, CCS, USCI_A0, UartEcho

MSP430, CCS, USCI_A0, UartEcho

※ msp430.h 를 사용하는 소스입니다.

Did you have a look at the example codes for the MCU that is provided by TI for almost every processor?

www.ti.com/lit/zip/slac536

The following examples show how to set up the clocks:

msp430fr59xx_cs_01.c       Configure MCLK for 8MHz operation
msp430fr59xx_cs_02.c       Configure MCLK for 16MHz operation
msp430fr59xx_cs_03.c       Output 32768Hz crystal on XT1 and observe failsafe
msp430fr59xx_cs_04.c       ACLK = XT1 = 32768Hz, SMCLK= XT2 = 8MHz, MCLK = DCO
msp430fr59xx_cs_05.c       Using LFXT in bypass mode, failsafe operation shown

0. 참고 사항

• C:\ti\msp\MSP430Ware_3_80_04_05\examples\devices\MSP430FR5xx_6xx\MSP430FR5x8x_MSP430FR692x_MSP430FR6x7x_MSP430FR6x8x_Code_Examples\C
  
• http://e2e.ti.com/support/microcontrollers/msp430/f/166/p/368560/1297094
• https://github.com/achopra6/MSP430FR6989/blob/master/timer.c
• http://www.ti.com/lit/ds/symlink/msp430fr6989.pdf
• http://www.ti.com/lit/ug/slau367o/slau367o.pdf

출처: http://coyoteugly.tistory.com/188 [마이콤 개발자를 위한 여행]

0. 참고 사항

• [MSP430Ware] / msp430fr69xx_euscia0_uart_01.c
  
• [MSP430Ware] / www.ti.com/lit/zip/slac536
  
• [MSP430FR6989 LaunchPad™ Development Kit] / http://www.ti.com/lit/ug/slau627a/slau627a.pdf
  
• [MSP430FR6989 DataSheet] / http://www.ti.com/lit/ds/symlink/msp430fr6989.pdf
• [MSP430FR6xx User's Guide] / http://www.ti.com/lit/ug/slau367o/slau367o.pdf

1. HW 구성

2. 소스 설명

1. P1.0 LED

2. use USCI_A0

- P2.1 : UCA0RXD

- P2.0 : UCA0TXD

- BaudRate : 115200

full 소스는 아래 github를 통해 확인하세요.

void initUART() {     // Configure USCI_A0 for UART mode     UCA0CTLW0 = UCSWRST;                      // Put eUSCI in reset     UCA0CTLW0 |= UCSSEL__SMCLK;               // CLK = SMCLK     // Baud Rate Setting     // Use Table 30-5 in Family User Guide     UCA0BR0 = 8;     UCA0BR1 = 0;     UCA0MCTLW |= UCOS16 | UCBRF_10 | 0xF700;   //0xF700 is UCBRSx = 0xF7     UCA0CTLW0 &= ~UCSWRST;                    // Initialize eUSCI     UCA0IE |= UCRXIE;                         // Enable USCI_A0 RX interrupt } void initGPIO() {     // Configure UART     P2SEL0 |= BIT0 | BIT1;                    // USCI_A0 UART operation     P2SEL1 &= ~(BIT0 | BIT1);     // Configure PJ.5 PJ.4 for external crystal oscillator     PJSEL0 |= BIT4 | BIT5;                    // For XT1 } #pragma vector=USCI_A0_VECTOR __interrupt void USCI_A0_ISR(void) {     switch(__even_in_range(UCA0IV, USCI_UART_UCTXCPTIFG))     {     case USCI_NONE: break;     case USCI_UART_UCRXIFG:         LED0_OUT ^= LED0_PIN;         while(!(UCA0IFG & UCTXIFG));         UCA0TXBUF = UCA0RXBUF;         __no_operation();         break;     case USCI_UART_UCTXIFG: break;     case USCI_UART_UCSTTIFG: break;     case USCI_UART_UCTXCPTIFG: break;     } }

3. 소스

• https://github.com/sglee0223/msp430/tree/master/UartEcho
  

4. 결과