Msp430f149 single-chip serial C program, msp430f149 Single-Chip Microcomputer

Msp430f149 single-chip serial C program, msp430f149 Single-Chip Microcomputer
Msp430f149 single-chip microcomputer serial port C program msp430f149 single-chip microcomputer Introduction: MSP430 Series single-chip microcomputer is a kind of 16-bit ultra-low power consumption, with a streamlined Instruction Set (PROTEUS) introduced to the market in 1996 by Texas Instrument) (Mixed Signal Processor ).
Msp430f149 is an ultra-low-power MCU Based on flash memory or ROM. It provides 8 MIPS and a working voltage of 1.8 V-3.6 V. It has a flash memory of up to 60 kb and various high-performance analog and smart digital peripherals. Ultra-Low Power Consumption: 0.1 μA RAM (holding mode) 0.7 μA (Real-time clock mode) 200 μA/MIPS (Working Mode) within 6 μs, the device is quickly awakened from the standby mode. Parameter: Flash options: 1KB-60KB ROM options: 1KB-16KB RAM options: 512B-10KB GPIO options: 14, 22, 48-pin ADC options: 10 and 12-bit slope other integrated peripherals of SAR: analog comparator, DMA, hardware multiplier, SVS, 12-bit DAC (from Baidu encyclopedia)
C Language Program (using IAR for 430 ):

# Include <export x14x. h> typedef unsigned char uchar; typedef unsigned int uint; uchar RecBuf [256]; uchar Windex; uchar Rindex; void Send1Char (uchar sendchar); void PutString (uchar * ptr ); void com_init (); // initialize void com_init () {unsigned int I;/* close all IO ports in the following six lines */P1DIR = 0XFF; P1OUT = 0XFF; p2DIR = 0XFF; P2OUT = 0XFF; P3DIR = 0XFF; P3OUT = 0XFF; P4DIR = 0XFF; P4OUT = 0XFF; P5DIR = 0XFF; P5OUT = 0XFF; P6DIR = 0XF F; P6OUT = 0XFF; WDTCTL = WDTPW + WDTHOLD; // disable the watchdog P6DIR | = BIT2; P6OUT | = BIT2; // disable the level conversion P6DIR | = BIT7; P6OUT & = ~ BIT7; // turn off the level conversion P3SEL | = 0x30; // select P3.4 and P3.5 for UART communication port BCSCTL1 & = ~ XT2OFF; // XT2on do {IFG1 & = ~ OFIFG; // Clear OSCFault flag for (I = 0xFF; I> 0; I --); // Time for flag to set} while (IFG1 & OFIFG )); // OSCFault flag still set? BCSCTL2 | = SELM_2 + SELS; // MCLK = SMCLK = XT2 (safe) ME1 | = UTXE0 + URXE0; // enable USART0 to send and accept UCTL0 | = CHAR; // select the 8-character UTCTL0 | = SSEL1; // UCLK = SMCLK UBR00 = 0x45; // The baud rate is 115200 UBR10 = 0x00; // UMCTL0 = 0x00; // Modulation UCTL0 & = ~ SWRST; // initialize UART state machine IE1 | = URXIE0; // enable USART0 to receive interrupt _ EINT (); // enable global interrupt Windex = 0; Rindex = 0 ;} /*************************************** * *** Function Name: UART0_RXISR function: receives the interrupt service function of UART0, wake up the CPU here, and enable it to exit the low-power mode parameter: no return value: no *************************************** * ***/# pragma vector = UART0RX_VECTOR _ interrupt void UART0_RXISR (void) {if (RXBUF0 = 0x0d) LPM1_EXIT; else {RecBuf [Windex ++] = RXBUF0; Windex & = 0x7f; // when Windex = 0x80, changed to 0x00 ;}} /*************************************** * *** Function Name: send1Char function: Send a character parameter to the PC: sendchar -- Return Value of the character to be sent: no *************************************** * ***/void Send1Char (uchar sendchar) {while (! (IFG1 & UTXIFG0); // wait for the sending register to be empty TXBUF0 = sendchar ;} /*************************************** * *** Function Name: putSting function: Send the string parameter ptr to the PC to point to the pointer return value of the sent string: no *************************************** * ***/void PutString (uchar * ptr) {while (* ptr! = '\ 0') {Send1Char (* ptr ++); // send data} while (! (IFG1 & UTXIFG0); TXBUF0 = 0x0d; while (! (IFG1 & UTXIFG0); TXBUF0 = 0x0a; // send a line feed command *********** * ********/void main (void) {com_init (); PutString ("welcome to my blog"); PutString ("I am meizumx4! "); While (1) {LPM1 ;}}

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Format: N.8.1, 115200
No verification, 8 data bits, 1 Stop bits, baud rate 115200
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