SLVU240B May   2008  – August 2018 MSP430F2131 , TPS62260

 

  1.   Read This First
    1.     About This Manual
    2.     How to Use This Manual
    3.     Information About Cautions and Warnings
    4.     Related Documentation From Texas Instruments
    5.     If You Need Assistance
    6.     Trademarks
  2. 1Introduction
    1. 1.1 Requirements
      1. 1.1.1 Power Supply Requirements
      2. 1.1.2 Printed Circuit Board Assemblies (PCBs)
  3. 2Setup
    1. 2.1 Input/Output Connector Descriptions
      1. 2.1.1 J1, J2, and J3 – Power Supply Connectors
      2. 2.1.2 JP1 – Wireless Interface Connector
      3. 2.1.3 JP2 – JTAG Interface Connector
    2. 2.2 Hardware Setup
  4. 3Supported Colors and Operation Modes
    1. 3.1 Color Range
    2. 3.2 Auto-Scroll Mode
    3. 3.3 Manual Control Mode
  5. 4Design Description
    1. 4.1 Hardware Design
      1. 4.1.1 LED Power Stages
      2. 4.1.2 Output Filter Design
      3. 4.1.3 MODE and EN Pins
      4. 4.1.4 MSP430 MCU Design
    2. 4.2 LED Color Table
    3. 4.3 Firmware Design
      1. 4.3.1 Firmware C-Code Listing
  6. 5Schematic and Bill of Materials
    1. 5.1 Schematics
    2. 5.2 Bill of Materials
  7. 6Board Layout
    1. 6.1 Photographs of Top and Bottom
    2. 6.2 Layout
    3. 6.3 Thermal Images
  8. AReprogramming
    1. A.1 Additional Software and Hardware Needed
    2. A.2 IAR Embedded Workbench KickStart Software Installation
    3. A.3 Hardware Installation
    4. A.4 Using IAR Embedded Workbench to Download Code on MSP430 MCUs
  9.   Revision History

4.3.1 Firmware C-Code Listing

A complete listing of the firmware used in the EVM is contained below:

/******************************************************************************/ /* RGB-LED Demo using MSP430F2131 and TPS62260 from Texas Instruments */ /* */ /* Description: */ /* Timer_A3 is used to generate 3 PWM signals. Timer overflow generates an */ /* interrupt and in its interrupt service routine the PWM outputs are */ /* reseted. Output Units will set the PWM outputs. */ /* Software starts in a demo mode that automatically changes the PWM */ /* settings. As soon as the incremental encoder is operated the automatic */ /* mode stops and the adjustment of the colour can be done manually. */ /*----------------------------------------------------------------------------*/ /* Texas Instruments Deutschland GmbH */ /* Christian Hernitscheck, November 2007 */ /******************************************************************************/ #include "msp430x21x1.h" #define LED_TabLength 252*4 const unsigned int LED1[]={65385,65385,65385,65385,65385,65385,65385,65385, 65385,65385,65385,65385,65385,65385,65385,65385,65385,65385,65385,65385,65385, 65385,65385,65385,65385,65385,65385,65385,65385,65385,65385,65385,65385,65385, 65385,65385,65385,65385,65385,65385,65385,65385,65385,65385,57866,52635,47404, 42173,36943,34327,31712,29096,26481,23866,21250,19942,18635,17327,16019,14712, 13404,12096,10789, 9481, 8173, 7519, 6865, 6212, 5558, 4904, 4577, 4250, 3923, 3596, 3269, 2942, 2615, 2288, 1962, 1635, 1308, 981, 654, 327, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 327, 654, 981, 1308, 1635, 1962, 2288, 2615, 2942, 3269, 3596, 3923, 4250, 4577, 4904, 5558, 6212, 6865, 7519, 8173, 9481, 10789,12096,13404,14712,16019,17327,18635,19942,21250,23866,26481,29096,31712, 34327,36943,39558,42173,44789,47404,52635,57866,65385,65385,65385,65385,65385, 65385,65385,65385,65385,65385,65385,65385,65385,65385,65385,65385,65385,65385, 65385,65385,65385,65385,65385,65385,65385,65385,65385,65385,65385,65385,65385, 65385,65385,65385,65385,65385,65385,65385,65385,65385,65385,65385}; //blue LED const unsigned int LED2[]={ 150, 295, 622, 949, 1276, 1603, 1930, 2256, 2583, 2910, 3237, 3564, 3891, 4218, 4545, 4872, 5526, 6180, 6833, 7487, 8141, 9449,10757,12064,13372,14680,15987,17295,18603,19910,21218,23834,26449,29064, 31680,34295,36911,39526,42141,44757,47372,52603,57834,65353,65353,65353,65353, 65353,65353,65353,65353,65353,65353,65353,65353,65353,65353,65353,65353,65353, 65353,65353,65353,65353,65353,65353,65353,65353,65353,65353,65353,65353,65353, 65353,65353,65353,65353,65353,65353,65353,65353,65353,65353,65353,65353,65353, 65353,65353,65353,65353,65353,65353,65353,65353,65353,65353,65353,65353,65353, 65353,65353,65353,65353,65353,65353,65353,65353,65353,65353,65353,65353,65353, 65353,65353,65353,65353,65353,65353,65353,65353,65353,65353,65353,65353,65353, 65353,65353,65353,57834,52603,47372,42141,36911,34295,31680,29064,26449,23834, 21218,19910,18603,17295,15987,14680,13372,12064,10757, 9449, 8141, 7487, 6833, 6180, 5526, 4872, 4545, 4218, 3891, 3564, 3237, 2910, 2583, 2256, 1930, 1603, 1276, 949, 622, 295, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150}; //green LED const unsigned int LED3[]={ 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 311, 638, 965, 1292, 1619, 1946, 2272, 2599, 2926, 3253, 3580, 3907, 4234, 4561, 4888, 5542, 6196, 6849, 7503, 8157, 9465,10773,12080,13388,14696,16003,17311, 18619,19926,21234,23850,26465,29080,31696,34311,36927,39542,42157,44773,47388, 52619,57850,65369,65369,65369,65369,65369,65369,65369,65369,65369,65369,65369, 65369,65369,65369,65369,65369,65369,65369,65369,65369,65369,65369,65369,65369, 65369,65369,65369,65369,65369,65369,65369,65369,65369,65369,65369,65369,65369, 65369,65369,65369,65369,65369,65369,65369,65369,65369,65369,65369,65369,65369, 65369,65369,65369,65369,65369,65369,65369,65369,65369,65369,65369,65369,65369, 65369,65369,65369,65369,65369,65369,65369,65369,65369,65369,65369,65369,65369, 65369,65369,65369,65369,65369,65369,65369,65369,65369,57850,52619,47388,42157, 36927,34311,31696,29080,26465,23850,21234,19926,18619,17311,16003,14696,13388, 12080,10773, 9465, 8157, 7503, 6849, 6196, 5542, 4888, 4561, 4234, 3907, 3580, 3253, 2926, 2599, 2272, 1946, 1619, 1292, 965, 638, 311, 150}; //red LED unsigned int LEDptr; unsigned char BAold; void Inc_Decoder(unsigned char BAnew); void Delay(void); //------------------------------------------------------------------------------ // Main Program void main(void) { unsigned int i,temp; WDTCTL=WDTPW+WDTHOLD; // disable Watchdog BCSCTL1= CALBC1_8MHZ; //--- System Clock Settings ---------------------- DCOCTL = CALDCO_8MHZ; // use calibrated 8MHz settings //---- PWM Timer Initialization ------------------ TACTL = TASSEL_2+ID_0+MC_0+TACLR+TAIE; // Timer clock = SMCLK = 8MHz TACCTL0 = CM_0+CCIS_2+OUTMOD_1; // All Output Units will set PWM outputs if TACCTL1 = CM_0+CCIS_2+OUTMOD_1; // TACCRx=TAR. Resetting PWM outputs is done TACCTL2 = CM_0+CCIS_2+OUTMOD_1; // by software. LEDptr=0; TACCR0=LED1[LEDptr>>2]; // LEDptr is shifted right twice, TACCR1=LED2[LEDptr>>2]; // this means divided by 4 TACCR2=LED3[LEDptr>>2]; //--- Port Initialization ---------------------------------- P1SEL = 0x0E; // P1.1, P1.2, P1.3 are used as PWM Timer Outputs P1OUT = 0x00; // P1.0 is output (Enable for TPS62260) P1DIR = 0xFF; // P1.4, P1.5, P1.6, P1.7 are not used => digital outputs P2OUT = 0x04; // P2.0 and P2.1 are not used => digital outputs P2DIR|= 0xE4; // P2.3, P2.4 are digital inputs => incremental encoder // P2.5, P2.6, P2.7 are not used => digital inputs BAold=0x01; //--- initialize decoder for incremental encoder ----------- Delay(); // Delay loop TACTL |= MC_2; // start Timer_A (continuous mode) __enable_interrupt(); // enables maskable interrupts temp=P2IN&0x18; //--- Main Loops --------------------------------------------------------------- while ((P2IN&0x18)==temp) //--- change settings automatically till { Delay(); // incremental encoder is operated LEDptr=LEDptr+1; if (LEDptr>=LED_TabLength) LEDptr=0; } while(1) //--- change settings manually (incremental encoder) { Inc_Decoder(0x03&(P2IN>>3)); // check incremental decoder for(i=0;i<=1000;i++); // delay loop (used for debouncing) } } //------------------------------------------------------------------------------ // Delay Loop void Delay(void) { unsigned int i,j; for(i=0;i<=10000;i++) // delay loop for(j=0;j<=3;j++); } //------------------------------------------------------------------------------ // Incremental Encoder Subroutine: void Inc_Decoder(unsigned char BAnew) { if (BAnew==0x02) { if (BAold==0x00) { LEDptr=LEDptr-1; // decrement pointer if new state is 'b' and if (LEDptr>=LED_TabLength) // old state was 'a' LEDptr=LED_TabLength; } } if (BAnew==0x00) { if (BAold==0x02) { LEDptr=LEDptr+1; // increment pointer if new state is 'a' and if (LEDptr>=LED_TabLength) // old state was 'b' LEDptr=0; } } BAold=BAnew; // store new state } //------------------------------------------------------------------------------ // Timer_A Interrupt Service Routine: #pragma vector=TIMERA1_VECTOR __interrupt void ISR_TimerA(void) { P1OUT |= 0x01; // activate LEDs //--- update PWM duty cycle settings using colour table TACCR0=LED1[LEDptr>>2]; // LEDptr is shifted right twice, TACCR1=LED2[LEDptr>>2]; // this means divided by 4 TACCR2=LED3[LEDptr>>2]; //--- PWM signal generation TACTL &= ~TAIFG; TACCTL0 &= ~OUTMOD_7; // OUTMOD_0 => PWM output=L TACCTL0 |= OUTMOD_1; // OUTMOD_1 => set PWM output TA0 as soon as TACCR0=TAR TACCTL1 &= ~OUTMOD_7; // OUTMOD_0 => PWM output=L TACCTL1 |= OUTMOD_1; // OUTMOD_1 => set PWM output TA1 as soon as TACCR1=TAR TACCTL2 &= ~OUTMOD_7; // OUTMOD_0 => PWM output=L TACCTL2 |= OUTMOD_1; // OUTMOD_1 => set PWM otuput TA2 as soon as TACCR2=TAR // TAR = Timer_A counter }