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ossicubesat [2012/05/06 06:54] – dongheeossicubesat [2026/06/11 05:52] (current) – external edit 127.0.0.1
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  - 출력: PAYLOAD에 I2C로 메시지 보내기  - 출력: PAYLOAD에 I2C로 메시지 보내기
 1. 메시지 예약 삭제 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 #### LED: 모스코드
Line 324: Line 347:
 ---- ----
  port 1,2,3 이 가능 .  port 1,2,3 이 가능 .
 +
 +
  
  
Line 504: Line 529:
  
 Setting I2CEN = 0 has the following effects: Setting I2CEN = 0 has the following effects:
 +
  - I2C communication stops  - I2C communication stops
  - SDA and SCL are high impedance  - SDA and SCL are high impedance
Line 512: Line 538:
  - I2COA, I2CSA, I2CIE, I2CIFG, and I2CIV 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.
-*When I2RM=1, I2CSTP must be set before the last I2CDR value +
-is written. Othwerwise, correct STOP generation will not occur.+
  
  
 RXRDYIFG  RXRDYIFG 
  
-Receive ready interrupt/status. This flag is set when the I2C module +Receive ready interrupt/status. This flag is set when the I2C module has received new data. RXRDYIFG is automatically cleared when 
-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
-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. only.
  
 TXRDYIFG TXRDYIFG
  
-Transmit ready interrupt/status. This flag is set when the I2C module +Transmit ready interrupt/status. This flag is set when the I2C module is ready for new transmit data (master transmit mode) or when 
-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. 
-another master is requesting data (slave transmit mode). TXRDYIFG +A transmit underflow is indicated if I2CTXUDF = 1. Unused in receive mode.
-is automatically cleared when I2CDR and the transmit buffer are full. +
-A transmit underflow is indicated if I2CTXUDF = 1. Unused in receive +
-mode.+
  
 eeprom eeprom
Line 1140: Line 1159:
  
 uart to 7020 uart to 7020
-음 그런데 morse 신호 처음 부분이 잘린다. 
  
 main.c main.c
Line 1235: Line 1253:
  
 rc.c rc.c
 +
  #include  "rf.h"  #include  "rf.h"
   
Line 1350: Line 1369:
  
 morse.c morse.c
 +
  #include "morse.h"  #include "morse.h"
  #include "rf.h"  #include "rf.h"
Line 1432: Line 1452:
  }  }
  }  }
 +
 +====== 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>  </markdown>
ossicubesat.1336287256.txt.gz · Last modified: 2026/06/11 05:52 (external edit)