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# 하드웨어 만들기 - RF - EPS - PAYLOAD - 솔라셀
# 소프트웨어(주요기능)
1. EPS 제어(충전, 리셋) 1. RF에서 RX로 신호를 받아서 메시지 등록, 1. 다른칩 죽었는지 서로 감시 1. 시간되면 LED 깜박임 1. 인공위성정보 비콘으로 보냄 1. 전체 reset 하는 command. 1. 인자 업데이트
#### RF/BEACON 1. 비콘의 TX - 입력: 배터리 레벨, VBUS, 솔라패널 전류, 베터리 충전 여부, COMS, PAYLOAD 모듈동작상태, 온도, - 처리: RF칩에서 받아 들이는 신호로 만들기. - 출력: RF칩에 신호보내기.
#### RF/COMS 1. COMS RX - 입력: RF칩에서 신호 받음 - 처리: 입력 받은 신호를 I2C로 가공 - 출력: OBC에 I2C로 받은 신호 전달.(예약 메시지) 1. OBC 감시 - 입력: OBC에서 신호를 받는다. - 처리: OBC에 신호가 있는지 없는지 체크 - 출력: 입력 신호가 없으면 OBC에 리셋을 날려줌.
#### OBC 1. EPS 전원제어 (베터리, 수퍼캡 충전 방전) - 입력: 베터리 전압, 베터리 충전상태, 수퍼캡 충전상태, 수퍼캡 전압 - 처리:
1. 안테나 deployment 실행 - 처리: 20분이 지나면 안타나 deployment 핀 신호 인가 - 출력: deployment 완료 플래그 설정 (플래쉬메모리)
1. COMS, BEACON, PAYLOAD 감시
1. 메시지 스케쥴링 예약: COMS RX에서 메시지 받기 - 입력: 예약 메시지 신호 받기 - 처리: 시간을 파싱하여, 플래쉬 메모리에 스케쥴 예약 - 출력: 예약 완료 메시지 RX에 보내기 1. 메시지 예약 실행 - 입력: 시간, 슈퍼캡이 충전 되어 있는가?, 밤/낮, 회전상태 - 처리: 시간 보면서 예약 테이블에 스케쥴링된 메시지 실행 - 출력: PAYLOAD에 I2C로 메시지 보내기 1. 메시지 예약 삭제
read button and led on
#include <msp430x16x.h>
void main (void) {
WDTCTL = WDTPW + WDTHOLD; // Stop WDT P6DIR |= BIT0; P1OUT = BIT2; //pull up
while(1)
{
if((P6IN & BIT1) == 0) { // LOW?
P6OUT |= BIT0;
} else {
P6OUT &= ~BIT0;
}
}
}
#### LED: 모스코드 1. I2C로 받은 메시지를 LED 키기. - 입력: OBC에서 받은 메시지 - 처리: I2C로 받은 메시지를 모스 코드로 바꾼다. - 출력: 모스신호에 따라 LED 키기 2. PWM 으로 LED 제어 - ?
## 코드 morse, uart0
//******************************************************************************
// MSP-FET430P140 Demo - USART1, Ultra-Low Pwr UART 9600 Echo ISR, 32kHz ACLK
//
// Description: Echo a received character, RX ISR used. Normal mode is LPM3,
// USART1 RX interrupt triggers TX Echo.
// ACLK = UCLK1 = LFXT1 = 32768, MCLK = SMCLK = DCO~ 800k
// Baud rate divider with 32768hz XTAL @9600 = 32768Hz/9600 = 3.41 (0003h 4Ah )
// //* An external watch crystal is required on XIN XOUT for ACLK *//
//
//
// MSP430F149
// -----------------
// /|\| XIN|-
// | | | 32kHz
// --|RST XOUT|-
// | |
// | P3.4|----------->
// | | 9600 - 8N1
// | P3.5|<-----------
//
//
// M. Buccini
// Texas Instruments Inc.
// Feb 2005
// Built with CCE Version: 3.2.0 and IAR Embedded Workbench Version: 3.21A
//******************************************************************************
#include <msp430x14x.h>
#include "morse.h"
char message[255];
uint8_t step = 0;
uint8_t sending = 0;
void main(void)
{
volatile unsigned int i;
WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer
P6DIR |= 0x01;
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
P3SEL |= 0x30; // P3.4,5 = USART0 TXD/RXD
ME1|= UTXE0 + URXE0; // Enable USART0 TXD/RXD
UCTL0 |= CHAR; // 8-bit character
UTCTL0 |= SSEL0; // UCLK = ACLK
UBR00 = 0x03; // 32k/9600 - 3.41
UBR10 = 0x00; //
UMCTL0 = 0x4A; // Modulation
UCTL0 &= ~SWRST; // Initialize USART state machine
IE1 |= URXIE0; // Enable USART0 RX interrupt
// _BIS_SR(LPM0_bits + GIE); // Enter LPM3 w/ interrupt
_EINT();
while (1) {
if (sending == 1) {
for(i=0; i < step;i++ ) {
ascii(message[i]);
}
step=0;
sending=0;
}
}
}
#pragma vector=USART0RX_VECTOR
__interrupt void usart0_rx (void)
{
while (!(IFG1 & UTXIFG0)); // USART1 TX buffer ready?
TXBUF0 = RXBUF0; // RXBUF1 to TXBUF1
message[step] = RXBUF0;
step++;
if (RXBUF0 == 13) // CR
{
P6OUT ^= 0x01;
sending = 1;
}
}
#include "morse.h"
//uint8_t done = 0b10000000;
uint8_t done = 0x80;
uint8_t output_pin;
void delay(void)
{
volatile unsigned int i;
i = 15000; // Delay
do (i--);
while (i != 0);
}
void mark(uint8_t t)
{
volatile unsigned int i;
for(i = 0; i < t; i++)
{
P6OUT &= ~0x01; // Turn On
delay();
}
P6OUT |= 0x01; // Turn Off
delay();
}
void space(uint8_t t)
{
volatile unsigned int i;
for(i = 0; i < t; i++)
{
P6OUT |= 0x01;
delay();
}
}
void morse(uint8_t m)
{
while (m != done) {
mark(m & done ? 3 : 1);
space(1);
m = m << 1;
}
space(3);
}
void ascii(char c) {
uint8_t number_code[] = {
// 0b11111100, 0b01111100, 0b00111100, 0b00011100, 0b00001100, 0b00000100,
// 0b10000100, 0b11000100, 0b11100100, 0b11110100 // 0-9
0xfc, 0x7c, 0x3c, 0x1c, 0xc, 0x4, 0x84, 0xc4, 0xe4, 0xf4
};
uint8_t alphabet_code[] = {
// 0b01100000, 0b10001000, 0b10101000, 0b10010000, 0b01000000, 0b00101000,
// 0b11010000, 0b00001000, 0b00100000, 0b01111000, 0b10110000, 0b01001000,
// 0b11100000, 0b10100000, 0b11110000, 0b01101000, 0b11011000, 0b01010000,
// 0b00010000, 0b11000000, 0b00110000, 0b00011000, 0b01110000, 0b10011000,
// 0b10111000, 0b11001000 // A-Z
0x60, 0x88, 0xa8, 0x90, 0x40, 0x28, 0xd0, 0x8, 0x20, 0x78, 0xb0, 0x48, 0xe0, 0xa0, 0xf0, 0x68, 0xd8, 0x50, 0x10, 0xc0, 0x30, 0x18, 0x70, 0x98, 0xb8, 0xc8
};
if (c >= '0' && c <= '9') {
morse(number_code[c- '0']);
} else if (c >= 'a' && c <= 'z') {
morse(alphabet_code[c - 'a']);
} else if (c == ' ') {
space(7);
} else {
morse(done);
}
}
———- #### 타이머 watchdog timer
#include <msp430x14x.h>
void main(void)
{
WDTCTL = WDT_MDLY_32; // Set Watchdog Timer interval to ~30ms
IE1 |= WDTIE; // Enable WDT interrupt
P6DIR |= 0x01; // Set P1.0 to output direction
_BIS_SR(LPM0_bits + GIE); // Enter LPM0 w/ interrupt
}
// Watchdog Timer interrupt service routine
#pragma vector=WDT_VECTOR
__interrupt void watchdog_timer(void)
{
P6OUT ^= 0x01; // Toggle P1.0 using exclusive-OR
}
그냥 타이머
#include <msp430x14x.h>
void main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
P6DIR |= 0x01; // P1.0 output
CCTL0 = CCIE; // CCR0 interrupt enabled
CCR0 = 50000;
TACTL = TASSEL_2 + MC_2; // SMCLK, contmode
_BIS_SR(LPM0_bits + GIE); // Enter LPM0 w/ interrupt
}
// Timer A0 interrupt service routine
#pragma vector=TIMERA0_VECTOR
__interrupt void Timer_A (void)
{
P6OUT ^= 0x01; // Toggle P1.0
CCR0 += 50000; // Add Offset to CCR0
}
PWM
//*******************************************************************************
// MSP-FET430P140 Demo - Timer_A, PWM TA1-2, Up Mode, 32kHz ACLK
//
// Description: This program generates two PWM outputs on P1.2,3 using
// Timer_A configured for up mode. The value in CCR0, 512-1, defines the PWM
// period and the values in CCR1 and CCR2 the PWM duty cycles. Using 32kHz
// ACLK as TACLK, the timer period is 15.6ms with a 75% duty cycle on P1.2
// and 25% on P1.3. Normal operating mode is LPM3.
// ACLK = TACLK = LFXT1 = 32768Hz, MCLK = default DCO ~800kHz.
// //* External watch crystal on XIN XOUT is required for ACLK *//
//
// MSP430F149
// -----------------
// /|\| XIN|-
// | | | 32kHz
// --|RST XOUT|-
// | |
// | P1.2/TA1|--> CCR1 - 75% PWM
// | P1.3/TA2|--> CCR2 - 25% PWM
//
// M. Buccini
// Texas Instruments Inc.
// Feb 2005
// Built with CCE Version: 3.2.0 and IAR Embedded Workbench Version: 3.21A
//******************************************************************************
#include <msp430x14x.h>
void main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
P1DIR |= 0x0C; // P1.2 and P1.3 output
P1SEL |= 0x0C; // P1.2 and P1.3 TA1/2 otions
CCR0 = 512-1; // PWM Period
CCTL1 = OUTMOD_7; // CCR1 reset/set
CCR1 = 384; // CCR1 PWM duty cycle
CCTL2 = OUTMOD_7; // CCR2 reset/set
CCR2 = 128; // CCR2 PWM duty cycle
TACTL = TASSEL_1 + MC_1; // ACLK, up mode
_BIS_SR(LPM3_bits); // Enter LPM3
}
#### Low power mode (3 or 4)
#### 핀인터럽트 (전체핀) (하나핀)?
external interupt latch up?
port 1,2,3 이 가능 .
#### ADC
//******************************************************************************
// MSP-FET430P140 Demo - ADC12, Sample A0, Set P1.0 if A0 > 0.5*AVcc
//
// Description: A single sample is made on A0 with reference to AVcc.
// Software sets ADC10SC to start sample and conversion - ADC12SC
// automatically cleared at EOC. ADC12 internal oscillator times sample (16x)
// and conversion. In Mainloop MSP430 waits in LPM0 to save power until ADC12
// conversion complete, ADC12_ISR will force exit from LPM0 in Mainloop on
// reti. If A0 > 0.5*AVcc, P1.0 set, else reset.
//
// MSP430F149
// -----------------
// /|\| XIN|-
// | | |
// --|RST XOUT|-
// | |
// Vin-->|P6.0/A0 P1.0|--> LED
//
// M. Buccini
// Texas Instruments Inc.
// Feb 2005
// Built with CCE Version: 3.2.0 and IAR Embedded Workbench Version: 3.21A
//******************************************************************************
#include <msp430x14x.h>
void main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
ADC12CTL0 = SHT0_2 + ADC12ON; // Set sampling time, turn on ADC12
ADC12CTL1 = SHP; // Use sampling timer
ADC12IE = 0x01; // Enable interrupt
ADC12CTL0 |= ENC; // Conversion enabled
P6SEL |= 0x02; // P6.0 ADC option select
P6DIR |= 0x01; // P1.0 output
for (;;)
{
ADC12CTL0 |= ADC12SC; // Sampling open
_BIS_SR(CPUOFF + GIE); // LPM0, ADC12_ISR will force exit
}
}
// ADC12 interrupt service routine
#pragma vector=ADC12_VECTOR
__interrupt void ADC12_ISR (void)
{
if (ADC12MEM0 < 0x7FF)
P6OUT &= ~0x01; // Clear P1.0 LED off
else
P6OUT |= 0x01; // Set P1.0 LED on
_BIC_SR_IRQ(CPUOFF); // Clear CPUOFF bit from 0(SR)
}
#### UART & Serial port
//******************************************************************************
// MSP-FET430F149 Demo - ADC12, Sample A1, Send the level at Serial Port
//
// Description: A single sample is made on A1 with reference to AVcc.
// Software start sample and conversion - Send out the
// Analog voltage level to the serial port as two bytes.
//
//Additionally if the voltage is over 0.5*Vcc it makes LED at P6.2 glow
//
// MSP430F149
// -----------------
// /|\| XIN|-
// | | |
// --|RST XOUT|-
// | |
// Vin-->|P6.1/A1 P6.2|-->
// | |
// | P3.4|----------->
// | | 9600 - 8N1
// | P3.5|<-----------
//
// referencedesigner.com
// Some of the Original codes are from Texas Instruments
//******************************************************************************
#include <msp430x14x.h>
unsigned int delay ( unsigned int x)
{
unsigned int i,j;
for (i = 0; i<= x; i++)
{
for(j=0;j<=1000; j++) ;
}
return 0;
}
void main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop Watch Dog Timer
ADC12CTL0 = SHT0_2 + ADC12ON; // Set sampling time, turn on ADC12
ADC12CTL1 = SHP;
ADC12IE = 0x01; // Enable interrupt
ADC12MCTL0 = 0x01 ;
ADC12CTL0 |= ENC ; // Conversion enabled
P6SEL |= 0x02 ; // P6.1 ADC option select
P6DIR |= 0x04; // P6.2 is output for LED
// Serial Port Settings
P3SEL |= 0x30; // P3.4,5 = USART0 TXD/RXD
ME1 |= UTXE0 + URXE0; // Enable USART0 TXD/RXD
UCTL0 |= CHAR; // 8-bit character
UTCTL0 |= SSEL0; // UCLK = ACLK
UBR00 = 0x03; // 32k/9600 - 3.41
UBR10 = 0x00; //
UMCTL0 = 0x4A; // Modulation
UCTL0 &= ~SWRST; // Initialize USART state machine
IE1 |= URXIE0; // Enable USART0 RX interrupt
for (;;)
{
// This should actually happen in a timer interrupt where
// we may like to sample only once in, say 1 second
delay(500);
ADC12CTL0 |= ADC12SC; // Sampling open
_BIS_SR(CPUOFF + GIE); // LPM0, ADC12_ISR will force exit
}
}
// ADC12 interrupt service routine
#pragma vector=ADC12_VECTOR
__interrupt void ADC12_ISR (void)
{
unsigned short lResultRSSI ;
unsigned char part1, part2;
if (ADC12MEM0 < 0x7FF)
P6OUT &= ~0x04; // Clear P6.2 - LED off
else
P6OUT |= 0x04; // Set P6.2 - LED on
_BIC_SR_IRQ(CPUOFF); // Clear CPUOFF bit from 0(SR)
lResultRSSI = ADC12MEM0 ; // RXBUF0 to TXBUF0
part1 = (lResultRSSI & 0x00FF); // lsb
part2 = (lResultRSSI & 0xFF00) >> 8; // msb
while (!(IFG1 & UTXIFG0));
TXBUF0 = part2; // We send MSB first
while (!(IFG1 & UTXIFG0));
TXBUF0 = part1;
}
#### PWM - hardware pwm: http://gushh.net/blog/msp430-servo/ - PWM DC Motor Control Using Timer_A of the MSP430: http://www.ti.com/lit/an/slaa120/slaa120.pdf
#### I2C - EEPROM (메시지) - 24LC256 http://ww1.microchip.com/downloads/en/devicedoc/21203m.pdf - msp430 http://read.pudn.com/downloads143/doc/623226/C/I2Croutines.c__.htm
##### MSP430 1611 I2C 관련 레지스터 - U0CTL:
U0CTL |= I2C+SYNC; U0CTL &= ~I2CEN; U0CTL |= I2CEN;
- I2CTCTL = I2CSSEL_2; - I2CSCLH = 0x03; - I2CSCLL = 0x03; - I2CNDAT = 0x03; - I2CSA = 0x50; - I2CIE = RXRDYIE; - I2CTCTL |= I2CSTT + I2CSTP;
Setting I2CEN = 0 has the following effects:
- I2C communication stops - SDA and SCL are high impedance - I2CTCTL, bits 3-0 are cleared and bits 7-4 are unchanged - I2CDCTL and I2CDR register is cleared - Transmit and receive shift registers are cleared - U0CTL, I2CNDAT, I2CPSC, I2CSCLL, I2CSCLH registers are unchanged - I2COA, I2CSA, I2CIE, I2CIFG, and I2CIV registers are unchanged
When I2RM=1, I2CSTP must be set before the last I2CDR value is written. Othwerwise, correct STOP generation will not occur.
RXRDYIFG
Receive ready interrupt/status. This flag is set when the I2C module has received new data. RXRDYIFG is automatically cleared when I2CDR is read and the receive buffer is empty. A receiver overrun is indicated if bit I2CRXOVR = 1. RXRDYIFG is used in receive mode only.
TXRDYIFG
Transmit ready interrupt/status. This flag is set when the I2C module is ready for new transmit data (master transmit mode) or when another master is requesting data (slave transmit mode). TXRDYIFG is automatically cleared when I2CDR and the transmit buffer are full. A transmit underflow is indicated if I2CTXUDF = 1. Unused in receive mode.
eeprom http://www.eetkorea.com/STATIC/PDF/201105/EEKOL_2011MAY24_STOR_AN_01.pdf
//******************************************************************************
// MSP-FET430P140 Demo - I2C, Master Interface to DAC8571, Read/Write
//
// Description: I2C communication with a DAC8571 in read and write mode is
// demonstrated. MSP430 writes a 0x00 to the DAC to initialize communication
// and then reads the value from the DAC, increments it by 1, and Transmits
// it back to the DAC8571 in a repetitive manner to generate a ramp
// ACLK = n/a, MCLK = SMCLK = default DCO ~ 800k, SCL = SMCLK/10
// //* MSP430F169 Device Required *//
//
// /|\ /|\
// DAC8571 10k 10k EEPROM
// slave | | master
// -----------------| | | -----------------
// | SDA |<-|---+->|P3.1 |
// | | | | |
// | | | | |
// GND <--|A0 SCL |<-+----->|P3.3 |
// | | | |
// | | | |
// | Vdd|<---+--->|Vcc |
// | Vref|<---| | |
// | GND|<------->|GND |
// | | | |
//
//
// DAC8571 I2C address = 0x4C (A0 = GND)
//
//
// H. Grewal
// Texas Instruments Inc.
// Feb 2005
// Built with CCE Version: 3.2.0 and IAR Embedded Workbench Version: 3.21A
//******************************************************************************
#include <msp430x16x.h>
volatile unsigned int i;
int PtrTransmit;
unsigned char I2CBuffer[3];
/*---------------------------------------------------------------------------*/
void InitI2C(void)
// Description:
// Initialization of the I2C Module
{
P3SEL = 0x0A; // select module function for the used I2C pins
P3DIR &= ~0x0A;
// Recommended initialisation steps of I2C module as shown in User Guide:
U0CTL |= I2C+SYNC; // (1) Select I2C mode with SWRST=1
U0CTL &= ~I2CEN; // (2) disable the I2C module
// (3) Configure the I2C module with I2CEN=0 :
// U0CTL default settings:
// 7-bit addressing, no DMA, no feedback
I2CTCTL = I2CTRX+I2CSSEL_2; // byte mode, repeat mode, clock source = SMCLK,
// transmit mode
I2CSA = 0x50; // define Slave Address
// In this case the Slave Address defines the
// control byte that is sent to the EEPROM.
// I2CPSC = 0x00; // I2C clock = clock source/1
// I2CTCTL = I2CSSEL_1; // SMCLK
I2CSCLH = 0x03; // SCL high period = 5*I2C clock
I2CSCLL = 0x03; // SCL low period = 5*I2C clock
U0CTL |= I2CEN; // (4) set I2CEN via software
}
void I2CWriteInit(void)
// Description:
// Initialization of the I2C Module for Write operation.
{
U0CTL |= MST; // define Master Mode
I2CTCTL |= I2CTRX; // I2CTRX=1 => Transmit Mode (R/W bit = 0)
I2CIFG &= ~TXRDYIFG;
I2CIE = TXRDYIE; // enable Transmit ready interrupt
}
/*---------------------------------------------------------------------------*/
void I2CReadInit(void)
// Description:
// Initialization of the I2C Module for Read operation.
{
I2CTCTL &= ~I2CTRX; // I2CTRX=0 => Receive Mode (R/W bit = 1)
I2CIE = RXRDYIE; // enable Receive ready interrupt
}
/*---------------------------------------------------------------------------*/
void EEPROM_ByteWrite(unsigned int Address, unsigned char Data)
// Description:
// Byte Write Operation. The communication via the I2C bus with an EEPROM
// (2465) is realized. A data byte is written into a user defined address.
{
unsigned char adr_hi;
unsigned char adr_lo;
while (I2CDCTL&I2CBUSY); // wait until I2C module has finished all operations
adr_hi = Address >> 8; // calculate high byte
adr_lo = Address & 0xFF; // and low byte of address
I2CBuffer[2] = adr_hi; // store single bytes that have to be sent
I2CBuffer[1] = adr_lo; // in the I2CBuffer.
I2CBuffer[0] = Data;
PtrTransmit = 2; // set I2CBuffer Pointer
I2CWriteInit();
I2CNDAT = 3; // 1 control byte + 3 bytes should be transmitted
I2CTCTL |= I2CSTT+I2CSTP; // start and stop condition generation
// => I2C communication is started
}
/*---------------------------------------------------------------------------*/
void EEPROM_AckPolling(void)
// Description:
// Acknowledge Polling. The EEPROM will not acknowledge if a write cycle is
// in progress. It can be used to determine when a write cycle is completed.
{ unsigned int count;
while (I2CDCTL&I2CBUSY); // wait until I2C module has finished all operations
P6OUT ^= 0x01;
count=0;
U0CTL &= ~I2CEN; // clear I2CEN bit => necessary to re-configure I2C module
I2CTCTL |= I2CRM; // transmission is software controlled
U0CTL |= I2CEN; // enable I2C module
I2CIFG = NACKIFG; // set NACKIFG
while (NACKIFG & I2CIFG)
{
I2CIFG=0x00; // clear I2C interrupt flags
U0CTL |= MST; // define Master Mode
I2CTCTL |= I2CTRX; // I2CTRX=1 => Transmit Mode (R/W bit = 0)
I2CTCTL |= I2CSTT; // start condition is generated
while (I2CTCTL&I2CSTT); // wait till I2CSTT bit was cleared
I2CTCTL |= I2CSTP; // stop condition is generated after slave address was sent
// => I2C communication is started
while (I2CDCTL&I2CBUSY); // wait till stop bit is reset
count=count+1;
P6OUT ^= 0x01;
}
U0CTL &= ~I2CEN; // clear I2CEN bit => necessary to re-configure I2C module
I2CTCTL &= ~I2CRM; // transmission is by the I2C module
U0CTL |= I2CEN; // enable I2C module
return;
}
unsigned char EEPROM_RandomRead(unsigned int Address)
// Description:
// Random Read Operation. Data is read from the EEPROM. The EEPROM
// address is defined with the parameter Address.
{
unsigned char adr_hi;
unsigned char adr_lo;
while (I2CDCTL&I2CBUSY); // wait until I2C module has finished all operations
adr_hi = Address >> 8; // calculate high byte
adr_lo = Address & 0xFF; // and low byte of address
I2CBuffer[1] = adr_hi; // store single bytes that have to be sent
I2CBuffer[0] = adr_lo; // in the I2CBuffer.
PtrTransmit = 1; // set I2CBuffer Pointer
I2CWriteInit();
I2CNDAT = 2; // 1 control byte + 2 bytes should be transmitted
I2CIFG &= ~ARDYIFG; // clear Access ready interrupt flag
I2CTCTL |= I2CSTT; // start condition generation
// => I2C communication is started
while ((~I2CIFG)&ARDYIFG); // wait untill transmission is finished
I2CReadInit();
I2CNDAT = 1; // 1 byte should be received
I2CIFG &= ~ARDYIFG; // clear Access ready interrupt flag
I2CTCTL |= I2CSTT+I2CSTP; // start receiving and finally generate
// re-start and stop condition
while ((~I2CIFG)&ARDYIFG); // wait untill transmission is finished
return I2CBuffer[0];
}
/*---------------------------------------------------------------------------*/
unsigned char EEPROM_CurrentAddressRead(void)
// Description:
// Current Address Read Operation. Data is read from the EEPROM. The current
// address from the EEPROM is used.
{
while (I2CDCTL&I2CBUSY); // wait until I2C module has finished all operations
I2CReadInit();
U0CTL |= MST; // define Master Mode
I2CNDAT = 1; // 1 byte should be received
I2CIFG &= ~ARDYIFG; // clear Access ready interrupt flag
I2CTCTL |= I2CSTT+I2CSTP; // start receiving and finally generate
// re-start and stop condition
while ((~I2CIFG)&ARDYIFG); // wait untill transmission is finished
return I2CBuffer[0];
}
void main(void)
{
volatile int a,b, c;
WDTCTL = WDTPW | WDTHOLD; // Disable the Watchdog.
P6DIR |= 0x01; //LED
InitI2C();
_EINT();
EEPROM_ByteWrite(0x0000,0x12);
__delay_cycles(300);
EEPROM_AckPolling(); // Wait for EEPROM write cycle completion
EEPROM_ByteWrite(0x0001,0x34);
EEPROM_AckPolling();
EEPROM_ByteWrite(0x0002,0x54);
EEPROM_AckPolling();
a=EEPROM_RandomRead(0x00);
b=EEPROM_RandomRead(0x01);
c=EEPROM_CurrentAddressRead();
while(1)
{
}
}
//// I2C Interrupt Vector (I2CIV) handler
#pragma vector=USART0TX_VECTOR
__interrupt void USART0 (void)
{
switch( I2CIV )
{
case 10:
{
I2CBuffer[0]=I2CDRB; // store received data in buffer
break;
}
case 12:
{
I2CDRB = I2CBuffer[PtrTransmit];
PtrTransmit = PtrTransmit-1;
if (PtrTransmit <0)
{
I2CIE &= ~TXRDYIE; // disable interrupts
}
break;
}
}
}
#include "msp430g2553.h"
//Address word + "HELLO WORLD"
unsigned char txdata[14] = {0x00, 0x00, 0x00, 0x48, 0x45, 0x4C, 0x4C, 0x4F, 0x20, 0x57, 0x4F, 0x52, 0x4C, 0x44};
unsigned char rxdata[12];
unsigned char tx_byte_count;
unsigned char rx_byte_count;
unsigned char tx_byte_counter;
unsigned char rx_byte_counter;
unsigned char i;
unsigned char tx_rx;
void i2c_tx(unsigned char tx_count);
void i2c_rx(unsigned char rx_count);
void main(void)
{
WDTCTL = WDTPW + WDTHOLD; //Stop WDT
BCSCTL1 = CALBC1_1MHZ; //Set DCO to 1MHz
DCOCTL = CALDCO_1MHZ;
P1SEL = BIT1 + BIT2; //Set RXD and TXD
P1SEL2 = BIT1 + BIT2;
UCA0CTL1 |= UCSSEL_2; //Have USCI use SMCLK AKA 1MHz main CLK
UCA0BR0 = 104; //Baud = 9600
UCA0BR1 = 0;
UCA0MCTL = UCBRS_1; //Modulation
UCA0CTL1 &= ~UCSWRST; //Start USCI
P1SEL |= BIT6 + BIT7; //Set I2C pins
P1SEL2|= BIT6 + BIT7;
UCB0CTL1 |= UCSWRST; //Enable SW reset
UCB0CTL0 = UCMST + UCMODE_3 + UCSYNC; //I2C Master, synchronous mode
UCB0CTL1 = UCSSEL_2 + UCSWRST; //Use SMCLK, keep SW reset
UCB0BR0 = 12; //fSCL = SMCLK/12 = ~100kHz
UCB0BR1 = 0;
UCB0I2CSA = 0b1010000; //Slave Address
UCB0CTL1 &= ~UCSWRST; //Clear SW reset, resume operation
IE2 |= UCB0TXIE; //Enable TX interrupt
IE2 |= UCB0RXIE; //Enable RX interrupt
__delay_cycles(20000); //Just a start up delay
i2c_tx(13); //i2c TX 13 bytes(Address word + "HELLO WORLD"
__delay_cycles(20000); //Allow 24LC256 to write data
i2c_tx(2); //i2c TX address
i2c_rx(12); //i2c RX data
for(i = 1; i < 12; i++)
{
while(!(IFG2 & UCA0TXIFG));
UCA0TXBUF = rxdata[i]; //UART TX data
}
__bis_SR_register(CPUOFF + GIE); //Wait for a reset
}
void i2c_tx(unsigned char tx_count)
{
tx_rx = 0;
tx_byte_count = tx_count + 1;
tx_byte_counter = tx_count; // Load TX byte counter
UCB0CTL1 |= UCTR + UCTXSTT; // I2C TX, start condition
__bis_SR_register(CPUOFF + GIE); // Enter LPM0 w/ interrupts
// Remain in LPM0 until all data is TX'd
}
void i2c_rx(unsigned char rx_count)
{
tx_rx = 1;
rx_byte_count = rx_count + 1;
rx_byte_counter = rx_count; // Load RX byte counter
UCB0CTL1 &= ~UCTR; // I2C RX
UCB0CTL1 |= UCTXSTT; // I2C start condition
__bis_SR_register(CPUOFF + GIE); // Enter LPM0 w/ interrupts
// Remain in LPM0 until all data is RX'd
}
//interrupt(USCIAB0TX_VECTOR) USCIAB0TX_ISR(void)
#pragma vector = USCIAB0TX_VECTOR
__interrupt void USCIAB0TX_ISR(void) //For mspgcc
{
if(tx_rx == 0)
{
if (tx_byte_counter > 0) //Check TX byte counter
{
UCB0TXBUF = txdata[tx_byte_count - tx_byte_counter]; // Load TX buffer
tx_byte_counter--; //Decrement TX byte counter
}
else if(tx_byte_counter == 0)
{
UCB0CTL1 |= UCTXSTP; //I2C stop condition
while (UCB0CTL1 & UCTXSTP); //Ensure stop condition got sent
IFG2 &= ~UCB0TXIFG; //Clear USCI_B0 TX int flag
__bic_SR_register_on_exit(CPUOFF); //Exit LPM0
}
}
else if(tx_rx == 1)
{
if (rx_byte_counter > 0) //Check RX byte counter
{
rxdata[rx_byte_count - rx_byte_counter] = UCB0RXBUF;
rx_byte_counter--; //Decrement RX byte counter
}
else if(rx_byte_counter == 0)
{
UCB0CTL1 |= UCTXSTP; // I2C stop condition
while (UCB0CTL1 & UCTXSTP); // Ensure stop condition got sent
rxdata[rx_byte_count - (rx_byte_counter + 1)] = UCB0RXBUF;
rxdata[rx_byte_count - (rx_byte_counter + 1)] = UCB0RXBUF;
IFG2 &= ~UCB0RXIFG; // Clear USCI_B0 RX int flag
__bic_SR_register_on_exit(CPUOFF); // Exit LPM0
}
}
}
uart to eeprpm and morse
//******************************************************************************
// MSP-FET430P140 Demo - USART1, Ultra-Low Pwr UART 9600 Echo ISR, 32kHz ACLK
//
// Description: Echo a received character, RX ISR used. Normal mode is LPM3,
// USART1 RX interrupt triggers TX Echo.
// ACLK = UCLK1 = LFXT1 = 32768, MCLK = SMCLK = DCO~ 800k
// Baud rate divider with 32768hz XTAL @9600 = 32768Hz/9600 = 3.41 (0003h 4Ah )
// //* An external watch crystal is required on XIN XOUT for ACLK *//
//
//
// MSP430F149
// -----------------
// /|\| XIN|-
// | | | 32kHz
// --|RST XOUT|-
// | |
// | P3.4|----------->
// | | 9600 - 8N1
// | P3.5|<-----------
//
//
// M. Buccini
// Texas Instruments Inc.
// Feb 2005
// Built with CCE Version: 3.2.0 and IAR Embedded Workbench Version: 3.21A
//******************************************************************************
#include <msp430x16x.h>
#include "morse.h"
char message[255];
uint8_t step = 0;
uint8_t sending = 0;
void initUart() {
P3SEL |= 0x30; // P3.4,5 = USART0 TXD/RXD
ME1|= UTXE0 + URXE0; // Enable USART0 TXD/RXD
UCTL0 |= CHAR; // 8-bit character
UTCTL0 |= SSEL0; // UCLK = ACLK
UBR00 = 0x03; // 32k/9600 - 3.41
UBR10 = 0x00; //
UMCTL0 = 0x4A; // Modulation
UCTL0 &= ~SWRST; // Initialize USART state machine
IE1 |= URXIE0; // Enable USART0 RX interrupt
}
void main(void)
{
volatile unsigned int i;
volatile unsigned char x;
WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer
P6DIR |= 0x01;
initUart();
// // _BIS_SR(LPM0_bits + GIE); // Enter LPM3 w/ interrupt
_EINT();
// sending = 1;
step = 10;
while (1) {
if (sending == 1) {
UCTL0 &= ~CHAR;
InitI2C();
for(i=0; i < step;i++ ) {
x= EEPROM_ByteWrite(i, message[i]);
EEPROM_AckPolling();
}
for(i=0; i < step;i++ ) {
x= EEPROM_RandomRead(i);
ascii(x);
}
step=0;
sending=0;
//Re-Configuring the USART Module for UART or SPI Operation
UCTL0 &= ~I2C; //Clear I2C, SYNC, and I2CEN (CLR.B &U0CTL)
UCTL0 &= ~SYNC;
UCTL0 &= ~I2CEN;
UCTL0 |= SWRST; // Set SWRST (MOV.B #SWRST,&U0CTL)
initUart();
}
}
}
#pragma vector=USART0RX_VECTOR
__interrupt void usart0_rx (void)
{
while (!(IFG1 & UTXIFG0)); // USART1 TX buffer ready?
TXBUF0 = RXBUF0; // RXBUF1 to TXBUF1
message[step] = RXBUF0;
_EINT();
step++;
if (RXBUF0 == 13) // CR
{
P6OUT ^= 0x01;
sending = 1;
}
}
eeprom to uart tx
//******************************************************************************
// MSP-FET430P140 Demo - USART0, Ultra-Low Pwr UART 9600 Echo ISR, 32kHz ACLK
//
// Description: Echo a received character, RX ISR used. In the Mainloop UART0
// is made ready to receive one character with interrupt active. The Mainloop
// waits in LPM3. The UART0 ISR forces the Mainloop to exit LPM3 after
// receiving one character which echo's back the received character.
// ACLK = UCLK0 = LFXT1 = 32768, MCLK = SMCLK = DCO~ 800k
// Baud rate divider with 32768hz XTAL @9600 = 32768Hz/9600 = 3.41 (0003h 4Ah )
// //* An external watch crystal is required on XIN XOUT for ACLK *//
//
// MSP430F149
// -----------------
// /|\| XIN|-
// | | | 32kHz
// --|RST XOUT|-
// | |
// | P3.4|----------->
// | | 9600 - 8N1
// | P3.5|<-----------
//
//
// M. Buccini
// Texas Instruments Inc.
// Feb 2005
// Built with CCE Version: 3.2.0 and IAR Embedded Workbench Version: 3.21A
//******************************************************************************
#include <msp430x16x.h>
#include "24lc256.h"
#include "morse.h"
unsigned char message[255];
int step = 36;
void initUart()
{
P3SEL |= 0x30; // P3.4,5 = USART0 TXD/RXD
ME1 |= UTXE0 + URXE0; // Enable USART0 TXD/RXD
UCTL0 |= CHAR; // 8-bit character
UTCTL0 |= SSEL0; // UCLK = ACLK
UBR00 = 0x03; // 32k/9600 - 3.41
UBR10 = 0x00; //
UMCTL0 = 0x4A; // Modulation
UCTL0 &= ~SWRST; // Initialize USART state machine
IE1 |= URXIE0; // Enable USART0 RX interrupt
}
void main(void)
{
volatile unsigned int i;
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
initUart();
_EINT();
U0CTL &= ~CHAR;
InitI2C();
for(i=0; i < step;i++ ) {
message[i]= EEPROM_RandomRead(i);
// ascii(x);
}
U0CTL &= ~I2C; //Clear I2C, SYNC, and I2CEN (CLR.B &U0CTL)
U0CTL &= ~SYNC;
U0CTL &= ~I2CEN;
U0CTL |= SWRST; // Set SWRST (MOV.B #SWRST,&U0CTL)
initUart();
// Mainloop
for (;;)
{
_BIS_SR(LPM3_bits + GIE); // Enter LPM3 w/interrupt
for(i=0; i< step; i++) {
while (!(IFG1 & UTXIFG0)); // USART0 TX buffer ready?
TXBUF0 = message[i]; // RXBUF0 to TXBUF0
}
}
}
// UART0 RX ISR will for exit from LPM3 in Mainloop
#pragma vector=USART0RX_VECTOR
__interrupt void usart0_rx (void)
{
_BIC_SR_IRQ(LPM3_bits); // Clear LPM3 bits from 0(SR)
}
#### SPI
#### 타이머 인터럽트: counter
#### pulseIn? RF?
#### delay 구현 조사
static void __inline__ delay(register unsigned int n)
{
__asm__ __volatile__ (
"1: \n"
" dec %[n] \n"
" jne 1b \n"
: [n] "+r"(n));
}
void delay_ms(unsigned int n)
{
while (n--)
{
delay(F_CPU/4000);
}
}
#### RTC Software Realtime Clock http://www.43oh.com/forum/viewtopic.php?f=10&t=2477
#### 7020-1
uart to 7020
main.c
#include <msp430x16x.h>
#include "morse.h"
#include "rf.h"
char message[255];
char _message[255] = {'h','e','l','l','o',' ','o','s','s','i',' ', '1'};
uint8_t step = 0;
uint8_t sending = 0;
void initUart() {
P3SEL |= 0x30; // P3.4,5 = USART0 TXD/RXD
ME1|= UTXE0 + URXE0; // Enable USART0 TXD/RXD
UCTL0 |= CHAR; // 8-bit character
UTCTL0 |= SSEL0; // UCLK = ACLK
UBR00 = 0x03; // 32k/9600 - 3.41
UBR10 = 0x00; //
UMCTL0 = 0x4A; // Modulation
UCTL0 &= ~SWRST; // Initialize USART state machine
IE1 |= URXIE0; // Enable USART0 RX interrupt
}
void main(void)
{
volatile unsigned int i;
volatile unsigned char x;
WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer
P6DIR |= 0x01;
initUart();
initRF();
// // _BIS_SR(LPM0_bits + GIE); // Enter LPM3 w/ interrupt
_EINT();
// sending = 1;
step = 10;
__delay_cycles(1000000);
while(1) {
for(i=0; i < 12;i++ ) {
ascii(_message[i]);
}
}
while (1) {
if (sending == 1) {
UCTL0 &= ~CHAR;
InitI2C();
for(i=0; i < step-1;i++ ) {
x= EEPROM_ByteWrite(i, message[i]);
EEPROM_AckPolling();
}
for(i=0; i < step-1;i++ ) {
x = EEPROM_RandomRead(i);
ascii(x);
}
step=0;
sending=0;
//Re-Configuring the USART Module for UART or SPI Operation
UCTL0 &= ~I2C; //Clear I2C, SYNC, and I2CEN (CLR.B &U0CTL)
UCTL0 &= ~SYNC;
UCTL0 &= ~I2CEN;
UCTL0 |= SWRST; // Set SWRST (MOV.B #SWRST,&U0CTL)
initUart();
}
}
}
#pragma vector=USART0RX_VECTOR
__interrupt void usart0_rx (void)
{
while (!(IFG1 & UTXIFG0)); // USART1 TX buffer ready?
TXBUF0 = RXBUF0; // RXBUF1 to TXBUF1
message[step] = RXBUF0;
_EINT();
step++;
if (RXBUF0 == 13) // CR
{
//P6OUT ^= 0x01;
sending = 1;
}
}
rc.c
#include "rf.h"
unsigned char r0[4] = {0x71, 0x39, 0x33,0xa0}; //433Mhz
unsigned char r1[3] = {0x02, 0x90, 0x11};
unsigned char r2[4] = {0x80, 0x0f, 0x00, 0xd2};
unsigned char r2_high[4] = {0x80, 0x0f, 0x7e, 0xd2};
void adf702x_write_register(unsigned char r)
{
volatile int i;
for(i = 7; i >= 0; i--)
{
// _
P5OUT &= ~BIT1; // low
if(r & (1<<i)) {
P5OUT |= BIT3;
} else {
P5OUT &= ~BIT3;
}
__delay_cycles(30);
// _|-
P5OUT |= BIT1; // high
//P5OUT |= BIT3;
__delay_cycles(30);
}
//_|-|
P5OUT &= ~BIT1; // low
//__delay_cycles(100);
}
void adf702x_write_r0()
{
volatile int i;
//P5OUT &= ~BIT3;
for(i=0;i<4;i++)
{
adf702x_write_register(r0[i]);
}
P5OUT |= BIT4; // high
__delay_cycles(60);
P5OUT &= ~BIT4;
//P5OUT &= ~BIT3;
}
void adf702x_write_r1()
{
volatile int i;
for(i=0;i<3;i++)
{
adf702x_write_register(r1[i]);
}
P5OUT |= BIT4; // high
__delay_cycles(60);
P5OUT &= ~BIT4;
}
void adf702x_write_r2(int isHigh)
{
volatile int i;
//P5OUT &= ~BIT3; // low
if (isHigh == 0) {
for(i=0;i<4;i++)
{
adf702x_write_register(r2[i]);
}
}else {
for(i=0;i<4;i++)
{
adf702x_write_register(r2_high[i]);
}
}
P5OUT |= BIT4; // SLE high_low
__delay_cycles(60);
P5OUT &= ~BIT4;
//P5OUT &= ~BIT3;
}
void initRF()
{
// DATA I/I is 5.0
//SCLK_PIN is 5.1
//SDATA_PIN is 5.3
//SLE PIN is 5.4
// CE PIN is 5.5
P5DIR |= BIT0 + BIT1 + BIT3 + BIT4 + BIT5;
P5OUT |= BIT5; // CE is HIGH
P5OUT |= BIT0; // DATA is HIGH
adf702x_write_r0();
//__delay_cycles(100);
adf702x_write_r1();
//__delay_cycles(100);
adf702x_write_r2(1);
//__delay_cycles(100);
adf702x_write_r2(0);
}
morse.c
#include "morse.h"
#include "rf.h"
//uint8_t done = 0b10000000;
uint8_t done = 0x80;
uint8_t output_pin;
void delay(void)
{
volatile unsigned int i;
i = 10000; // Delay
do (i--);
while (i != 0);
}
void mark(uint8_t t)
{
volatile unsigned int i;
// P5OUT |= BIT0;
adf702x_write_r2(1);
P6OUT &= ~0x01;
for(i = 0; i < t; i++)
{ // Turn On
delay();
}
// P5OUT &= ~BIT0;
adf702x_write_r2(0);
P6OUT |= 0x01; // Turn Off
delay();
}
void space(uint8_t t)
{
volatile unsigned int i;
// P5OUT &= ~BIT0;
adf702x_write_r2(0);
P6OUT |= 0x01;
for(i = 0; i < t; i++)
{
delay();
}
}
void morse(uint8_t m)
{
while (m != done) {
mark(m & done ? 3 : 1);
space(1); m = m << 1;
}
space(3);
}
void ascii(char c) {
uint8_t number_code[] = {
// 0b11111100, 0b01111100, 0b00111100, 0b00011100, 0b00001100, 0b00000100,
// 0b10000100, 0b11000100, 0b11100100, 0b11110100 // 0-9
0xfc, 0x7c, 0x3c, 0x1c, 0xc, 0x4, 0x84, 0xc4, 0xe4, 0xf4
};
uint8_t alphabet_code[] = {
// 0b01100000, 0b10001000, 0b10101000, 0b10010000, 0b01000000, 0b00101000,
// 0b11010000, 0b00001000, 0b00100000, 0b01111000, 0b10110000, 0b01001000,
// 0b11100000, 0b10100000, 0b11110000, 0b01101000, 0b11011000, 0b01010000,
// 0b00010000, 0b11000000, 0b00110000, 0b00011000, 0b01110000, 0b10011000,
// 0b10111000, 0b11001000 // A-Z
0x60, 0x88, 0xa8, 0x90, 0x40, 0x28, 0xd0, 0x8, 0x20, 0x78, 0xb0, 0x48, 0xe0, 0xa0, 0xf0, 0x68, 0xd8, 0x50, 0x10, 0xc0, 0x30, 0x18, 0x70, 0x98, 0xb8, 0xc8
};
if (c >= '0' && c <= '9') {
morse(number_code[c- '0']);
} else if (c >= 'a' && c <= 'z') {
morse(alphabet_code[c - 'a']);
} else if (c == ' ') {
space(7);
} else {
morse(done);
}
}
7021-n
4k일때는 잘되는것 같은데, 9.6k 일때 핀 인터럽트가 밀리는것 같다.
#include <msp430x16x.h>
#include "morse.h"
#include "rf.h"
char message[255];
//char _message[255] = {'h','e','l','l','o',' ','o','s','s','i',' ', '1'};
char _message[255] = {'a','b','c', 'd','e','f','g','h','i','j','k','l'};
uint8_t step = 0;
uint8_t sending = 0;
int i =7;
int m =0;
void initUart() {
P3SEL |= 0x30; // P3.4,5 = USART0 TXD/RXD
ME1|= UTXE0 + URXE0; // Enable USART0 TXD/RXD
UCTL0 |= CHAR; // 8-bit character
UTCTL0 |= SSEL0; // UCLK = ACLK
UBR00 = 0x03; // 32k/9600 - 3.41
UBR10 = 0x00; //
UMCTL0 = 0x4A; // Modulation
UCTL0 &= ~SWRST; // Initialize USART state machine
IE1 |= URXIE0; // Enable USART0 RX interrupt
}
void init_txrx_interrupt()
{
P1OUT = BIT2; //pull up
P1IE |= BIT2; // interrupt enable
P1IES |= BIT2; // interrupt hi/lo falling edge
//P1IES &= ~BIT2; // interrupt lo/hi edge
P1IFG &= ~BIT2; // P1.2 IFG cleared just in case
P5DIR |= BIT0;
_EINT();
}
void main(void)
{
volatile unsigned int i;
volatile unsigned char x;
WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer
P6DIR |= 0x01;
initUart();
init7021_n();
init_txrx_interrupt();
// // _BIS_SR(LPM0_bits + GIE); // Enter LPM3 w/ interrupt
_EINT();
// sending = 1;
step = 10;
__delay_cycles(1000000);
// while(1) {
// for(i=0; i < 12;i++ ) {
// ascii(_message[i]);
// }
// }
while (1) {
if (sending == 1) {
UCTL0 &= ~CHAR;
InitI2C();
for(i=0; i < step-1;i++ ) {
x= EEPROM_ByteWrite(i, message[i]);
EEPROM_AckPolling();
}
for(i=0; i < step-1;i++ ) {
x = EEPROM_RandomRead(i);
ascii(x);
}
step=0;
sending=0;
//Re-Configuring the USART Module for UART or SPI Operation
UCTL0 &= ~I2C; //Clear I2C, SYNC, and I2CEN (CLR.B &U0CTL)
UCTL0 &= ~SYNC;
UCTL0 &= ~I2CEN;
UCTL0 |= SWRST; // Set SWRST (MOV.B #SWRST,&U0CTL)
initUart();
}
}
}
#pragma vector=USART0RX_VECTOR
__interrupt void usart0_rx (void)
{
while (!(IFG1 & UTXIFG0)); // USART1 TX buffer ready?
TXBUF0 = RXBUF0; // RXBUF1 to TXBUF1
message[step] = RXBUF0;
_EINT();
step++;
if (RXBUF0 == 13) // CR
{
//P6OUT ^= 0x01;
sending = 1;
}
}
// Port 1 interrupt service routine
#pragma vector=PORT1_VECTOR
__interrupt void Port_1(void)
{
//P6OUT ^= BIT0; // Toggle LED at P6.0
//P5OUT ^= BIT0; // Toggle LED at P5.0
if(_message[m] & (1<<i)) {
P5OUT |= BIT0;
} else {
P5OUT &= ~BIT0;
}
i--;
if (i < 0){i = 7;m++;};
if (m >= 12){m = 0; };
P1IFG &= ~BIT2; // P1.2 IFG cleared
}
##### Transfer Frames Format
AX.25
할일
- Callsign 받기
##### I2C msp430 communication
master
led 6.0 button 6.1
#include <msp430x16x.h>
void delay (void);
char TXData = 0;
void main (void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
P3SEL |= 0x0A; // Select I2C pins
U0CTL |= I2C + SYNC; // Recommended init procedure
U0CTL &= ~I2CEN; // Recommended init procedure
I2CTCTL |= I2CSSEL1 + I2CTRX; // SMCLK, transmit
I2CNDAT = 0x03; // Write Three bytes
I2CSA = 0x0048; // Slave Address is 048h
U0CTL |= I2CEN; // Enable I2C
U0CTL |= MST; // Master mode
I2CTCTL |= I2CSTT + I2CSTP; // Initiate transfer
while ((I2CIFG & TXRDYIFG) == 0); // Wait for transmitter to be ready
I2CDRB = TXData; // Load I2CDRB
while ((I2CIFG & TXRDYIFG) == 0); // Wait for transmitter to be ready
I2CDRB = TXData; // Load I2CDRB
while ((I2CIFG & TXRDYIFG) == 0); // Wait for transmitter to be ready
while(1)
{
if((P6IN & BIT1) == 0) { // LOW?
I2CDRB = 1;
P6OUT |= BIT0;
}
}
}
slave
#include <msp430x16x.h>
char RXData = 0;
void main (void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
P6DIR |= BIT0;
P6OUT &= ~BIT0;
P3SEL |= 0x0A; // Select I2C pins
U0CTL |= I2C + SYNC; // Recommended init procedure
U0CTL &= ~I2CEN; // Recommended init procedure
I2CTCTL |= I2CSSEL1; // SMCLK
I2COA = 0x0048; // Own Address is 048h
I2CIE = RXRDYIE; // Enable RXRDYIFG interrupt
U0CTL |= I2CEN; // Enable I2C
_BIS_SR(LPM0_bits + GIE); // Enter LPM0 w/ interrupt
while(1){
if (RXData !=0)
P6OUT |= BIT0;
else
P6OUT &= ~BIT0;
}
}
// Common ISR for I2C Module
#pragma vector=USART0TX_VECTOR
__interrupt void I2C_ISR(void)
{
switch( I2CIV )
{
case 2: break; // Arbitration lost
case 4: break; // No Acknowledge
case 6: break; // Own Address
case 8: break; // Register Access Ready
case 10: // Receive Ready
RXData = I2CDRB; // RX data
_BIC_SR_IRQ(CPUOFF); // Clear LPM0
break;
case 12: break; // Transmit Ready
case 14: break; // General Call
case 16: break; // Start Condition
}
}
#### msp430 blink assembly
blink
;*******************************************************************************
; MSP430x1xx Demo - Software Toggle P1.0
;
; Description; Toggle P1.0 by xor'ing P0.1 inside of a software loop.
; ACLK = n/a, MCLK = SMCLK = default DCO ~ 800k
;
; MSP430x1xx
; -----------------
; /|\| XIN|-
; | | |
; --|RST XOUT|-
; | |
; | P6.0|-->LED
;
; M.Buccini
; Texas Instruments, Inc
; September 2004
; Built with CCE for MSP430 Version: 1.00
;*******************************************************************************
.cdecls C,LIST,"msp430x16x.h" ; Include device header file
;-------------------------------------------------------------------------------
.text ; Progam Start
;-------------------------------------------------------------------------------
RESET mov.w #300h,SP ; Initialize 'x1121 stackpointer
StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop WDT
SetupP1 bis.b #001h,&P6DIR ; P1.0 output
;
Mainloop xor.b #001h,&P6OUT ; Toggle P6.0
Wait mov.w #050000,R15 ; Delay to R15
L1 dec.w R15 ; Decrement R15
jnz L1 ; Delay over?
jmp Mainloop ; Again
;
;-------------------------------------------------------------------------------
; Interrupt Vectors
;-------------------------------------------------------------------------------
.sect ".reset" ; MSP430 RESET Vector
.short RESET ;
.end
</markdown>
ossicubesat.txt · Last modified: 2018/07/18 14:10 by 127.0.0.1