razzor
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ispprog
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fast/slow blinking led

This commit is contained in:
Olaf Rempel 2006-05-07 15:22:11 +02:00
parent d474cd9ad5
commit a0f49ed94d
1 changed files with 101 additions and 43 deletions
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144
ispprog.c
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@ -2,6 +2,7 @@
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <stdint.h> #include <stdint.h>
#include <avr/interrupt.h>
#define F_CPU 7372800 #define F_CPU 7372800
#define BAUDRATE 115200 #define BAUDRATE 115200
@ -13,6 +14,8 @@
#define LED_OFF 0x00 #define LED_OFF 0x00
#define LED_ON 0x01 #define LED_ON 0x01
#define LED_FAST 0x02
#define LED_SLOW 0x03
struct { struct {
uint8_t id; // device id uint8_t id; // device id
@ -33,23 +36,33 @@ uint8_t lastcmd = 0, lastval = 0, pollcode = 0xFF;
uint8_t page_buf[256]; uint8_t page_buf[256];
ISR(SIG_INPUT_CAPTURE1)
{
// toggle LED
PORTB ^= (1<<PORTB3);
}
/* Send one byte to PC */
void ser_send(uint8_t data) void ser_send(uint8_t data)
{ {
loop_until_bit_is_set(UCSRA, UDRIE); loop_until_bit_is_set(UCSRA, UDRIE);
UDR = data; UDR = data;
} }
/* Receive one byte from PC */
uint8_t ser_recv(void) uint8_t ser_recv(void)
{ {
loop_until_bit_is_set(UCSRA, RXC); loop_until_bit_is_set(UCSRA, RXC);
return UDR; return UDR;
} }
/* Check if receiver ready */
uint8_t ser_recv_ready(void) uint8_t ser_recv_ready(void)
{ {
return bit_is_set(UCSRA, RXC); return bit_is_set(UCSRA, RXC);
} }
/* Send one byte to target, and return received one */
uint8_t spi_rxtx(uint8_t val) uint8_t spi_rxtx(uint8_t val)
{ {
SPDR = val; SPDR = val;
@ -57,6 +70,7 @@ uint8_t spi_rxtx(uint8_t val)
return SPDR; return SPDR;
} }
/* Set LED mode */
void led_mode(uint8_t mode) void led_mode(uint8_t mode)
{ {
static uint8_t oldmode = LED_OFF; static uint8_t oldmode = LED_OFF;
@ -65,14 +79,33 @@ void led_mode(uint8_t mode)
return; return;
} else if (mode == LED_ON) { } else if (mode == LED_ON) {
TCCR1B = 0x00;
PORTB &= ~(1<<PORTB3); PORTB &= ~(1<<PORTB3);
} else if (mode == LED_OFF) { } else if (mode == LED_OFF) {
TCCR1B = 0x00;
PORTB |= (1<<PORTB3); PORTB |= (1<<PORTB3);
} else if (mode == LED_FAST) {
// 100ms reload
ICR1H = 0x2D;
ICR1L = 0x00;
// timer1 prescaler 64, CTC mode via Input Capture
TCCR1B = (1<<WGM13) | (1<<WGM12) | (1<<CS11) | (1<<CS10);
} else if (mode == LED_SLOW) {
// 250ms reload
ICR1H = 0x70;
ICR1L = 0x80;
// timer1 prescaler 64, CTC mode via Input Capture
TCCR1B = (1<<WGM13) | (1<<WGM12) | (1<<CS11) | (1<<CS10);
} }
oldmode = mode; oldmode = mode;
} }
/* Control reset and SPI lines */
void set_reset(uint8_t mode) void set_reset(uint8_t mode)
{ {
// set reset high, make SCK & MOSI inputs // set reset high, make SCK & MOSI inputs
@ -86,10 +119,15 @@ void set_reset(uint8_t mode)
DDRB |= ((1<<PORTB7) | (1<<PORTB5)); DDRB |= ((1<<PORTB7) | (1<<PORTB5));
} }
// wait 50ms
_delay_ms(25); _delay_ms(25);
_delay_ms(25); _delay_ms(25);
} }
/*
* writes a byte to target flash/eeprom
* remeber the values for polling
*/
void mem_write(uint8_t cmd, uint16_t addr, uint8_t val) void mem_write(uint8_t cmd, uint16_t addr, uint8_t val)
{ {
spi_rxtx(cmd); spi_rxtx(cmd);
@ -102,6 +140,7 @@ void mem_write(uint8_t cmd, uint16_t addr, uint8_t val)
lastval = val; lastval = val;
} }
/* read a byte from target flash/eeprom */
uint8_t mem_read(uint8_t cmd, uint16_t addr) uint8_t mem_read(uint8_t cmd, uint16_t addr)
{ {
spi_rxtx(cmd); spi_rxtx(cmd);
@ -110,6 +149,7 @@ uint8_t mem_read(uint8_t cmd, uint16_t addr)
return spi_rxtx(0x00); return spi_rxtx(0x00);
} }
/* wait until byte/page is written to target memory */
void poll(void) void poll(void)
{ {
uint8_t cmd, val, poll = 0xFF; uint8_t cmd, val, poll = 0xFF;
@ -131,6 +171,7 @@ void poll(void)
cmd = (lastcmd & 0x08) | 0x20; cmd = (lastcmd & 0x08) | 0x20;
} }
/* read until we get correct value */
do { do {
val = mem_read(cmd, lastaddr); val = mem_read(cmd, lastaddr);
} while ((val != lastval) && poll--); } while ((val != lastval) && poll--);
@ -153,15 +194,21 @@ int main(void)
UCSRB = (1<<TXEN) | (1<<RXEN); UCSRB = (1<<TXEN) | (1<<RXEN);
UCSRC = (1<<URSEL) | (1<<UCSZ1) | (1<<UCSZ0); UCSRC = (1<<URSEL) | (1<<UCSZ1) | (1<<UCSZ0);
// SPI enabled, Master mode, F_OSC/2 // SPI enabled, Master mode, F_OSC/4
SPCR = (1<<SPE) | (1<<MSTR); SPCR = (1<<SPE) | (1<<MSTR);
// enable timer1 input capture interrupt (CTC hit)
TIMSK = (1<<TICIE1);
sei();
// disable reset // disable reset
set_reset(1); set_reset(1);
while (1) { while (1) {
uint8_t pulse = 0; uint8_t pulse = 0;
while (!ser_recv_ready()) { while (!ser_recv_ready()) {
// reset the target
if (PIND & (1<<PIND3)) { if (PIND & (1<<PIND3)) {
if (!pulse) { if (!pulse) {
led_mode(LED_ON); led_mode(LED_ON);
@ -178,7 +225,7 @@ int main(void)
switch (ser_recv()) { switch (ser_recv()) {
// Enter programming mode // Enter programming mode
case 'P': { // done case 'P': {
uint8_t sync, count = 0x20; uint8_t sync, count = 0x20;
led_mode(LED_ON); led_mode(LED_ON);
do { do {
@ -197,21 +244,23 @@ int main(void)
} }
// Autoincrement address // Autoincrement address
case 'a': // done case 'a':
ser_send('Y'); ser_send('Y');
break; break;
// Set address // Set address
case 'A': // done case 'A':
addr = (ser_recv() << 8); addr = (ser_recv() << 8);
addr |= ser_recv(); addr |= ser_recv();
ser_send('\r'); ser_send('\r');
break; break;
// Write program memory, low byte // Write program memory, low byte
case 'c': // done case 'c':
led_mode(LED_FAST);
mem_write(0x40, addr, ser_recv()); mem_write(0x40, addr, ser_recv());
// poll on byte addressed targets
if (!pagemask) if (!pagemask)
poll(); poll();
@ -219,9 +268,11 @@ int main(void)
break; break;
// Write program memory, high byte // Write program memory, high byte
case 'C': // done case 'C':
led_mode(LED_FAST);
mem_write(0x48, addr, ser_recv()); mem_write(0x48, addr, ser_recv());
// poll on byte addressed targets
if (!pagemask) if (!pagemask)
poll(); poll();
@ -230,10 +281,9 @@ int main(void)
break; break;
// Issue Page Write // Issue Page Write
case 'm': // done case 'm':
led_mode(LED_FAST);
spi_rxtx(0x4C); spi_rxtx(0x4C);
// spi_rxtx(addr >> 8);
// spi_rxtx(addr & 0xFF);
spi_rxtx(lastaddr >> 8); spi_rxtx(lastaddr >> 8);
spi_rxtx(lastaddr & 0xFF); spi_rxtx(lastaddr & 0xFF);
spi_rxtx(0x00); spi_rxtx(0x00);
@ -244,26 +294,29 @@ int main(void)
break; break;
// Read Lock Bits // Read Lock Bits
case 'r': // done case 'r':
ser_send(mem_read(0x58, 0x0000)); ser_send(mem_read(0x58, 0x0000));
ser_send('\r'); ser_send('\r');
break; break;
// Read program memory // Read program memory
case 'R': // done case 'R':
led_mode(LED_SLOW);
ser_send(mem_read(0x28, addr)); ser_send(mem_read(0x28, addr));
ser_send(mem_read(0x20, addr)); ser_send(mem_read(0x20, addr));
addr++; addr++;
break; break;
// Read data memory // Read data memory
case 'd': // done case 'd':
led_mode(LED_SLOW);
ser_send(mem_read(0xA0, addr)); ser_send(mem_read(0xA0, addr));
addr++; addr++;
break; break;
// Write data memory // Write data memory
case 'D': // done case 'D':
led_mode(LED_FAST);
mem_write(0xC0, addr, ser_recv()); mem_write(0xC0, addr, ser_recv());
poll(); poll();
@ -272,7 +325,7 @@ int main(void)
break; break;
// Chip erase // Chip erase
case 'e': // done case 'e':
spi_rxtx(0xAC); spi_rxtx(0xAC);
spi_rxtx(0x80); spi_rxtx(0x80);
spi_rxtx(0x00); spi_rxtx(0x00);
@ -283,16 +336,14 @@ int main(void)
break; break;
// Write lock bits // Write lock bits
// TODO: not implemented
case 'l': case 'l':
ser_recv(); ser_recv();
// TODO: implement?
ser_send('\r'); ser_send('\r');
break; break;
// Read fuse bits // Read fuse bits
case 'F': // done case 'F':
spi_rxtx(0x50); spi_rxtx(0x50);
spi_rxtx(0x00); spi_rxtx(0x00);
spi_rxtx(0x00); spi_rxtx(0x00);
@ -300,7 +351,7 @@ int main(void)
break; break;
// Return High Fusebits // Return High Fusebits
case 'N': // done case 'N':
spi_rxtx(0x58); spi_rxtx(0x58);
spi_rxtx(0x08); spi_rxtx(0x08);
spi_rxtx(0x00); spi_rxtx(0x00);
@ -308,7 +359,7 @@ int main(void)
break; break;
// Return extendet Fusebits // Return extendet Fusebits
case 'Q': // done case 'Q':
spi_rxtx(0x50); spi_rxtx(0x50);
spi_rxtx(0x08); spi_rxtx(0x08);
spi_rxtx(0x00); spi_rxtx(0x00);
@ -316,17 +367,17 @@ int main(void)
break; break;
// Leave programming mode // Leave programming mode
case 'L': // done case 'L':
// Exit // Exit
case 'E': // done case 'E':
set_reset(1); set_reset(1);
led_mode(LED_OFF); led_mode(LED_OFF);
ser_send('\r'); ser_send('\r');
break; break;
// Select device type // Select device type
case 'T': { // done case 'T': {
uint8_t val, i = 0; uint8_t val, i = 0;
val = ser_recv(); val = ser_recv();
@ -345,7 +396,7 @@ int main(void)
} }
// Read signature bytes // Read signature bytes
case 's': { // done case 's': {
uint8_t i = 2; uint8_t i = 2;
do { do {
spi_rxtx(0x30); spi_rxtx(0x30);
@ -357,7 +408,7 @@ int main(void)
} }
// Return supported device codes // Return supported device codes
case 't': { // done case 't': {
uint8_t val, i = 0; uint8_t val, i = 0;
do { do {
val = devices[i++].id; val = devices[i++].id;
@ -367,7 +418,7 @@ int main(void)
} }
// Return software identifier // Return software identifier
case 'S': // done case 'S':
ser_send('A'); ser_send('A');
ser_send('V'); ser_send('V');
ser_send('R'); ser_send('R');
@ -378,46 +429,48 @@ int main(void)
break; break;
// Return software version // Return software version
case 'V': // done case 'V':
ser_send('3'); ser_send('3');
ser_send('8'); ser_send('8');
break; break;
// Return hardware version // Return hardware version
case 'v': // done case 'v':
ser_send('1'); ser_send('1');
ser_send('2'); ser_send('2');
break; break;
// Return programmer type // Return programmer type
case 'p': // done case 'p':
ser_send('S'); ser_send('S');
break; break;
// Set LED // Set LED
case 'x': // done case 'x':
ser_recv(); ser_recv();
led_mode(LED_ON); led_mode(LED_ON);
break; break;
// Clear LED // Clear LED
case 'y': // done case 'y':
ser_recv(); ser_recv();
led_mode(LED_OFF); led_mode(LED_OFF);
break; break;
// Report Block write Mode // Report Block write Mode
case 'b': // done case 'b':
ser_send('Y'); ser_send('Y');
ser_send(sizeof(page_buf) >> 8); ser_send(sizeof(page_buf) >> 8);
ser_send(sizeof(page_buf) & 0xFF); ser_send(sizeof(page_buf) & 0xFF);
break; break;
// Block Write // Block Write
case 'B': { // done case 'B': {
uint16_t size, i; uint16_t size, i;
uint8_t type; uint8_t type;
led_mode(LED_FAST);
size = ser_recv() << 8; size = ser_recv() << 8;
size |= ser_recv(); size |= ser_recv();
type = ser_recv(); type = ser_recv();
@ -432,6 +485,7 @@ int main(void)
addr++; addr++;
// page write on page-boundry
if ((addr & pagemask) == 0x00) { if ((addr & pagemask) == 0x00) {
spi_rxtx(0x4C); spi_rxtx(0x4C);
spi_rxtx(lastaddr >> 8); spi_rxtx(lastaddr >> 8);
@ -444,12 +498,12 @@ int main(void)
// last page // last page
if (size != sizeof(page_buf)) { if (size != sizeof(page_buf)) {
spi_rxtx(0x4C); spi_rxtx(0x4C);
spi_rxtx(lastaddr >> 8); spi_rxtx(lastaddr >> 8);
spi_rxtx(lastaddr & 0xFF); spi_rxtx(lastaddr & 0xFF);
spi_rxtx(0x00); spi_rxtx(0x00);
poll(); poll();
} }
} else if (type == 'E') { } else if (type == 'E') {
@ -464,10 +518,12 @@ int main(void)
} }
// Block Read // Block Read
case 'g': { // done case 'g': {
uint16_t size, i; uint16_t size, i;
uint8_t type; uint8_t type;
led_mode(LED_SLOW);
size = ser_recv() << 8; size = ser_recv() << 8;
size |= ser_recv(); size |= ser_recv();
type = ser_recv(); type = ser_recv();
@ -489,14 +545,14 @@ int main(void)
} }
// Write fuse bits // Write fuse bits
// TODO: implement
case 'f': case 'f':
ser_recv(); ser_recv();
// TODO: implement?
ser_send('\r'); ser_send('\r');
break; break;
// Universial command // Universial command
case ':': { // done case ':': {
uint8_t val[3]; uint8_t val[3];
val[0] = ser_recv(); val[0] = ser_recv();
val[1] = ser_recv(); val[1] = ser_recv();
@ -505,13 +561,14 @@ int main(void)
spi_rxtx(val[0]); spi_rxtx(val[0]);
spi_rxtx(val[1]); spi_rxtx(val[1]);
ser_send(spi_rxtx(val[2])); ser_send(spi_rxtx(val[2]));
_delay_ms(25); _delay_ms(25);
ser_send('\r'); ser_send('\r');
break; break;
} }
// New universal command // New universal command
case '.': { // done case '.': {
uint8_t val[4]; uint8_t val[4];
val[0] = ser_recv(); val[0] = ser_recv();
val[1] = ser_recv(); val[1] = ser_recv();
@ -522,11 +579,13 @@ int main(void)
spi_rxtx(val[1]); spi_rxtx(val[1]);
spi_rxtx(val[2]); spi_rxtx(val[2]);
ser_send(spi_rxtx(val[3])); ser_send(spi_rxtx(val[3]));
_delay_ms(25); _delay_ms(25);
ser_send('\r'); ser_send('\r');
break; break;
} }
// ESC
case 0x1B: case 0x1B:
break; break;
@ -535,6 +594,5 @@ int main(void)
break; break;
} }
} }
return 0; return 0;
} }