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rgb16mpm
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cleanup

master
Olaf Rempel 8 years ago
parent
5465febd59
commit
d27cd42955
7 changed files with 177 additions and 73 deletions
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  1. +2
    -2
      Makefile
  2. BIN
      eagle/rgb16mpm-bot.png
  3. BIN
      eagle/rgb16mpm-sch.png
  4. BIN
      eagle/rgb16mpm-top.png
  5. BIN
      eagle/rgb16mpm.brd
  6. BIN
      eagle/rgb16mpm.sch
  7. +175
    -71
      main.c

+ 2
- 2
Makefile View File

@@ -1,7 +1,7 @@
PRG = 16ch_pwm
PRG = rgb16mpm
OBJ = main.o
MCU_TARGET = atmega32
OPTIMIZE = -O2
OPTIMIZE = -Os

DEFS =
LIBS =


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eagle/rgb16mpm-bot.png View File

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eagle/rgb16mpm-sch.png View File

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eagle/rgb16mpm-top.png View File

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eagle/rgb16mpm.brd View File


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+ 175
- 71
main.c View File

@@ -1,7 +1,7 @@
/***************************************************************************
* 16ch RGB 8bit PWM controller *
* *
* Copyright (C) 2006 - 20011 by Olaf Rempel *
* Copyright (C) 2011 - 2012 by Olaf Rempel *
* razzor AT kopf MINUS tisch DOT de *
* *
* This program is free software; you can redistribute it and/or modify *
@@ -20,6 +20,7 @@
***************************************************************************/
#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/wdt.h>

#include <stdio.h>

@@ -30,10 +31,10 @@
*
* PA0..7 -> COL1..8
* PC0..7 -> COL9..16
* PB0 / PD7(OC2) -> ROW4
* PB1 / PD5(OC1A) -> ROW3
* PB2 / PD4(OC1B) -> ROW2
* PB3(OC0) / PD6 -> ROW1
* PB0 / PD7(OC2) -> ROW4 (OC2 not used)
* PB1 / PD5(OC1A) -> ROW3 (OC1A not used)
* PB2 / PD4(OC1B) -> ROW2 (OC1B not used)
* PB3(OC0) / PD6 -> ROW1 (OC0 not used)
* PD0 -> RXD
* PD1 -> TXD
* PD2 -> /RX_TX
@@ -41,7 +42,6 @@
*/

#define F_CPU 8000000

#include <util/delay.h>

#define ROW1 PORTB1 /* RED */
@@ -49,43 +49,47 @@
#define ROW3 PORTB3 /* BLUE */
#define ROW4 PORTB2 /* not used */

#define RXTX PORTD2
#define RXTX PORTD2 /* RS485 TX enable */
#define LED PORTD3

//#define BAUDRATE 115200
/* running without mpmboot? */
#define STANDALONE 0

#if (BAUDRATE)
#define UART_CALC_BAUDRATE(baudRate) (((uint32_t)F_CPU) / (((uint32_t)baudRate)*16) -1)
#if (STANDALONE)
#define OSCCAL 0xAA
#define BAUDRATE 115200
#define MPM_ADDRESS 0x11

static int uart_putchar(char c, FILE *stream)
{
if (c == '\n') {
loop_until_bit_is_set(UCSRA, UDRE);
UDR = '\r';
}
#define UART_CALC_BAUDRATE(baudRate) (((uint32_t)F_CPU) / (((uint32_t)baudRate)*16) -1)
#endif /* STANDALONE */

loop_until_bit_is_set(UCSRA, UDRE);
UDR = c;
return 0;
}
const static uint8_t versioninfo[16] = "rgb16mpm v0.99";

static FILE uart = FDEV_SETUP_STREAM(uart_putchar, NULL, _FDEV_SETUP_WRITE);
#endif /* (BAUDRATE) */
#define CMD_WAIT 0x00
#define CMD_SWITCH_MODE 0x01
#define CMD_GET_VERSION 0x02
// #define CMD_GET_CHIPINFO 0x03
// #define CMD_READ_MEMORY 0x11
// #define CMD_WRITE_MEMORY 0x12
#define CMD_WRITE_COLOR 0x81
#define CMD_WRITE_RAW_COLOR 0x82
#define CMD_READ_RAW_COLOR 0x83
#define CMD_WRITE_CONFIG 0x81

/* 16 values per color */
static uint8_t chan_value[3][16];

/* 16 +1 * 4 values (portA, portC, OCR0, flags) per color */
/* (16 +1) * 4 values (portA, portC, OCR0, flags) per color */
static uint8_t chan_rawdata[3][17 * 4];

/* used only in ISR */
/* used only in softpwm ISRs */
register uint8_t * pCurrentStep asm("r2"); /* r3:r2 */

/* used to sync ISR and color_update() */
/* used to sync softpwm ISRs and color_update() */
register uint8_t nextColor asm("r4"); /* r4 */

/* worst case: 9+2+12+8+7+13 = 61 clks -> 7.625us @8MHz */
void __attribute__ ((naked)) SIG_OVERFLOW0 (void)
ISR(TIMER0_OVF_vect, ISR_NAKED)
{
asm volatile(
/* save registers 2+1+2+2+2 = 9 */
@@ -106,30 +110,29 @@ void __attribute__ ((naked)) SIG_OVERFLOW0 (void)
);

asm volatile(
/* switch color and assign pCurrentStep */
/* switch color and assign pCurrentStep */ // R G B
"mov r24, %0 \n\t" // 1 1 1
"inc %0 \n\t" /* nextColor++ */ // 2 2 2
"cpi r24, 1 \n\t" // 3 3 3
"brlo L_red%= \n\t" /* if (nextColor < 1) -> red */ // 5 4 4
"breq L_green%= \n\t" /* if (nextColor == 1) -> green */ // - 6 5
"clr %0 \n\t" /* nextColor = 0; */ // - - 6
"ldi r24, %8 \n\t" /* PORTB = (1<<ROW4); */ // - - 7
"ldi r30, lo8(%4) \n\t" /* pCurrentStep = &rawdata[2]; */ // - - 8
"ldi r31, hi8(%4) \n\t" // - - 9
"ldi r24, %7 \n\t" /* PORTB = (1<<ROW4); */ // - - 7
"ldi r30, lo8(%3) \n\t" /* pCurrentStep = &rawdata[2]; */ // - - 8
"ldi r31, hi8(%3) \n\t" // - - 9
"rjmp L_end%= \n\t" // - - 11
"L_red%=: \n\t" /* red: */
"ldi r24, %6 \n\t" /* PORTB = (1<<ROW1); */ // 6 - -
"ldi r30, lo8(%2) \n\t" /* pCurrentStep = &rawdata[0]; */ // 7 - -
"ldi r31, hi8(%2) \n\t" // 8 - -
"ldi r24, %5 \n\t" /* PORTB = (1<<ROW1); */ // 6 - -
"ldi r30, lo8(%1) \n\t" /* pCurrentStep = &rawdata[0]; */ // 7 - -
"ldi r31, hi8(%1) \n\t" // 8 - -
"rjmp L_end%= \n\t" // 10 - -
"L_green%=: \n\t" /* green: */
"ldi r24, %7 \n\t" /* PORTB = (1<<ROW2); */ // - 7 -
"ldi r30, lo8(%3) \n\t" /* pCurrentStep = &rawdata[1]; */ // - 8 -
"ldi r31, hi8(%3) \n\t" // - 9 -
"ldi r24, %6 \n\t" /* PORTB = (1<<ROW2); */ // - 7 -
"ldi r30, lo8(%2) \n\t" /* pCurrentStep = &rawdata[1]; */ // - 8 -
"ldi r31, hi8(%2) \n\t" // - 9 -
"L_end%=: \n\t"
"out %5, r24 \n\t" /* set PORTB */ // 11 10 12
"out %4, r24 \n\t" /* set PORTB */ // 11 10 12
:: "r" (nextColor),
"r" (pCurrentStep),
"i" (&chan_rawdata[0]), /* RED */
"i" (&chan_rawdata[1]), /* GREEN */
"i" (&chan_rawdata[2]), /* BLUE */
@@ -184,7 +187,7 @@ void __attribute__ ((naked)) SIG_OVERFLOW0 (void)
}

/* worst case: 9+9+5+13 = 36 clks -> 4.5us @ 8MHz */
void __attribute__ ((naked)) SIG_OUTPUT_COMPARE0 (void)
ISR(TIMER0_COMP_vect, ISR_NAKED)
{
asm volatile(
/* save registers 2+1+2+2+2 = 9 */
@@ -237,7 +240,7 @@ void __attribute__ ((naked)) SIG_OUTPUT_COMPARE0 (void)
);
}

/* calc chan_valueX => chan_rawdataX */
static void calculate_timer_values(uint8_t *value, uint8_t *pDataStart)
{
uint8_t *pData = pDataStart +4; /* skip first entry (init) */
@@ -285,7 +288,7 @@ static void calculate_timer_values(uint8_t *value, uint8_t *pDataStart)
*pData++ = ((chan_used >> 8) & 0xFF); /* PORTC */

/* previous step needs timervalue and enable IRQ */
*(pData++ -4) = min_value -0; /* OCR0 */ /* FIXME: -1 ? */
*(pData++ -4) = min_value; /* OCR0 */
*(pData++ -4) = 0x01; /* flags */
}

@@ -311,55 +314,149 @@ static void calculate_timer_values(uint8_t *value, uint8_t *pDataStart)
*pData++ = ((chan_init >> 8) & 0xFF); /* PORTC */
}

#if (BAUDRATE)
void print_values(uint8_t *data)
static uint8_t rx_cmd;
static uint16_t rx_bcnt = 0xFF;
static uint16_t rx_length;

static uint8_t tx_cmd;
static uint8_t tx_cause;
static uint16_t tx_length;
static uint16_t tx_bcnt;

ISR(USART_RXC_vect)
{
uint8_t i;
uint8_t data = UDR;
sei();

if (rx_bcnt == 0xFF) {
/* MPM address stored in TWI address register by bootloader */
if (data == TWAR) {
UCSRA &= ~(1<<MPCM);
rx_bcnt = 0;
}

} else {
if (rx_bcnt == 0) {
rx_cmd = data;

} else if ((rx_bcnt == 1) || (rx_bcnt == 2)) {
rx_length = (rx_length << 8) | data;

} else if ((rx_bcnt -3) < rx_length) {
// TODO: get data
}

if ((rx_bcnt -2) == rx_length) {
/* enable RS485 TX */
PORTD |= (1<<RXTX);

/* first byte */
tx_cmd = rx_cmd;
UDR = rx_cmd;

/* prepare header */
tx_bcnt = 1;
tx_cause = 0;
tx_length = 0;

for (i = 0; i < 17; i++) {
fprintf(&uart, "%2d: %02X %02X %02X %02X\n", i,
data[(i<<2)], data[(i<<2) +1],
data[(i<<2) +2], data[(i<<2) +3]);
if (tx_cmd == CMD_GET_VERSION) {
tx_length = sizeof(versioninfo);
}

if (data[(i<<2) +3] == 0x00)
break;
/* enable interrupt */
UCSRB |= (1<<UDRIE);
}
rx_bcnt++;
}
}
#else
#define print_values(data)
#endif /* (BAUDRATE) */

ISR(USART_UDRE_vect)
{
/* enable IRQs again, but prevent multiple UDRE IRQs */
UCSRB &= ~(1<<UDRIE);
sei();

if ((tx_bcnt < 4) || (tx_bcnt -4) < tx_length) {
uint16_t pos = (tx_bcnt -4);
uint8_t data = 0xFF;

if (tx_bcnt == 1) {
data = tx_cause;

} else if (tx_bcnt == 2) {
data = (tx_length >> 8);

} else if (tx_bcnt == 3) {
data = (tx_length & 0xFF);

} else if (tx_cmd == CMD_GET_VERSION) {
data = versioninfo[pos];

} else {
data = 0xAA;
}

UDR = data;

/* re-enable for next round */
UCSRB |= (1<<UDRIE);
}

tx_bcnt++;
}

ISR(USART_TXC_vect, ISR_NOBLOCK)
{
/* disable RS485 TX */
PORTD &= ~(1<<RXTX);

/* enable MP mode again */
UCSRA |= (1<<MPCM);
rx_bcnt = 0xFF; // FIXME: cli?

if (tx_cmd == CMD_SWITCH_MODE) { // FIXME: check mode
wdt_enable(WDTO_15MS);
}
}

int main(void) __attribute__ ((noreturn));
int main(void)
{
/* 16 PWM Outputs */
PORTA = 0x00;
DDRA = 0xFF;

PORTB = 0x00;
DDRB = (1<<ROW1) | (1<<ROW2) | (1<<ROW3) | (1<<ROW4);

PORTC = 0x00;
DDRC = 0xFF;

PORTD = (1<<RXTX) | (1<<LED);
/* color ROWs */
PORTB = 0x00;
DDRB = (1<<ROW1) | (1<<ROW2) | (1<<ROW3) | (1<<ROW4);

PORTD = (1<<LED);
DDRD = (1<<RXTX) | (1<<LED);

#if (STANDALONE)
OSCCAL = OSCCAL_VALUE;
#endif /* (STANDALONE) */

/* timer0, FCPU/64, overflow interrupt */
TCCR0 = (1<<CS01) | (1<<CS00); /* FCPU/64 */
TIMSK = (1<<TOIE0);
TCNT0 = 0x00;

#if (BAUDRATE)
/* Set baud rate */
/* USART config */
/* Multi Drop Mode, 9n1 */
UCSRA = (1<<MPCM);
UCSRB = (1<<RXEN) | (1<<TXEN) | (1<<RXCIE) | (1<<TXCIE) | (1<<UCSZ2);
UCSRC = (1<<URSEL) | (1<<UCSZ1) | (1<<UCSZ0);
#if (STANDALONE)
UBRRH = (UART_CALC_BAUDRATE(BAUDRATE)>>8) & 0xFF;
UBRRL = (UART_CALC_BAUDRATE(BAUDRATE) & 0xFF);

/* enable usart with 8n1 */
UCSRB = (1<<TXEN) | (1<<RXEN);
UCSRC = (1<<URSEL) | (1<<UCSZ1) | (1<<UCSZ0);

fprintf(&uart, "good morning dave\n");
#endif /* (BAUDRATE) */
/* MPM address stored in TWI address register */
TWAR = MPM_ADDRESS;
#endif /* (STANDALONE) */

sei();

@@ -368,29 +465,37 @@ int main(void)
uint16_t ramp = 0;
uint8_t step = 0;

#if 0
/* create worst case for R+G, relaxed for B */
for (x = 0; x < 16; x++) {
chan_value[0][x] = 254 - x;
chan_value[1][x] = x +1;
chan_value[2][x] = x * 16;
}
x = 0;
#endif

while (1) {
uint8_t color_update = 0x07;
while (color_update) {
if ((color_update & 0x01) && (nextColor == 2)) {
calculate_timer_values(chan_value[0], chan_rawdata[0]);
color_update &= ~(0x01);
print_values(chan_rawdata[0]);

} else if ((color_update & 0x02) && (nextColor == 0)) {
calculate_timer_values(chan_value[1], chan_rawdata[1]);
color_update &= ~(0x02);
print_values(chan_rawdata[1]);

} else if ((color_update & 0x04) && (nextColor == 1)) {
calculate_timer_values(chan_value[2], chan_rawdata[2]);
color_update &= ~(0x04);
print_values(chan_rawdata[2]);
}
}
#if 1

PORTD ^= (1<<LED);

_delay_ms(100);
// _delay_ms(100);

step++;
if (step == 16) {
@@ -473,7 +578,6 @@ int main(void)
#endif
}
}
#endif
}

return 0;
}

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