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changeset 37:25fa387ef7e9

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- Conditionalise USB support. - Add ROM write command (we). - Add command to read the EEPROM status field of a DS2502 (rt). - Add command to dump the EEPROM data of a DS2502 (rr). - Add command to change data direction registers (dd).
author darius
date Tue, 23 Oct 2007 11:03:22 +0930
parents e40e919721b0
children 0a148f362097
files testavr.c
diffstat 1 files changed, 199 insertions(+), 9 deletions(-) [+]
line wrap: on
line diff
--- a/testavr.c	Tue Oct 23 10:55:51 2007 +0930
+++ b/testavr.c	Tue Oct 23 11:03:22 2007 +0930
@@ -37,7 +37,9 @@
 #include <util/delay.h>
 
 #include "1wire.h"
+#ifdef WITHUSB
 #include "usb.h"
+#endif
 
 #define UART_BAUD_SELECT(baudRate,xtalCpu) ((xtalCpu)/((baudRate)*16l)-1)
 #define UART_BAUD_RATE		38400
@@ -123,25 +125,34 @@
     /* Disable interrupts while we frob stuff */
     cli();
 
+#if 1
     /* Disable JTAG (yes twice) */
     MCUCSR |= _BV(JTD);
     MCUCSR |= _BV(JTD);
-    
+#endif
+
+#ifdef WITHUSB
     /* USB data bus (7:0) */
     DDRA = 0x00;
     PORTA = 0x00;
     
-    /* USB control (3:0) */
-    DDRB = 0x0e;
+    /* USB control (4:0) */
+    DDRB = 0x0d;
     PORTB = 0x00;
-    
+#else
+    DDRA = 0xff;
+    PORTA = 0x00;
+#endif    
     /* GPIO (0:7) */
     DDRC = 0xff;
     PORTC = 0x00;
 
-    /* GPIO (2:7) */
-    DDRD = 0xfc;
-    PORTD = 0xfc;
+    /* USART (0:1), IDBus (2:5), 485 (6:6), GPIO (7:7) */
+    DDRD = 0xf7;
+    PORTD = 0xf7;
+
+    /* Set up the one wire stuff */
+    OWInit();
 
     /* Init UART */
     UBRRH = UART_BAUD_SELECT(UART_BAUD_RATE, F_CPU) >> 8;
@@ -157,9 +168,30 @@
     /* Ready to go! */
     sei();
 
+#if 0
+    DDRA = 0xff;
+    DDRC = 0xff;
+    while (1) {
+	uart_putsP(PSTR("1\n\r"));
+	PORTA = 0xff;
+	uart_putsP(PSTR("2\n\r"));
+	PORTC = 0x00;
+	uart_putsP(PSTR("3\n\r"));
+	_delay_us(1);
+	uart_putsP(PSTR("4\n\r"));
+	PORTA = 0x80;
+	uart_putsP(PSTR("5\n\r"));
+	PORTC = 0xff;
+	uart_putsP(PSTR("6\n\r"));
+    }
+#endif    
+    
+#ifdef WITHUSB
+    uart_putsP(PSTR("Calling usb_init\n\r"));
     usb_init();
+#endif
+    uart_putsP(PSTR("done\n\r"));
     _delay_us(1000);
-    
     uart_putsP(PSTR("> "));
     cmd.state = 0;
     
@@ -172,8 +204,10 @@
 	    cmd.state = 0;
 	}
 	
-	if (!(PINB & _BV(PB0)))
+#ifdef WITHUSB
+	if (!(PDICTL & _BV(PDIINT)))
 	    usb_intr();
+#endif
     }
 }
 
@@ -236,6 +270,133 @@
     } else if (cmd.buf[0] == 'w' && cmd.buf[1] == 'b') {
 	arg = (int)strtol((char *)cmd.buf + 3, (char **)NULL, 16); 
 	OWWriteByte(arg);
+    } else if (cmd.buf[0] == 'r' && cmd.buf[1] == 't') {
+	if (cmd.len < 26) {
+	    uart_putsP(PSTR("Unable to parse ROM ID\n\r"));
+	    return;
+	}
+
+	if (OWTouchReset() != 0) {
+	    uart_putsP(PSTR("No presence\n\r"));
+	    return;
+	}
+
+	for (i = 0; i < 8; i++)
+	    ROM[i] = (int)strtol((char *)cmd.buf + 3 * (i + 1), (char **)NULL, 16);
+
+	if (ROM[0] != OW_FAMILY_ROM) {
+	    uart_putsP(PSTR("ROM specified isn't a DS2502\n\r"));
+	    return;
+	}
+
+	if (OWTouchReset() != 0) {
+	    uart_putsP(PSTR("No presence\n\r"));
+	    return;
+	}
+	
+	crc = 0;
+
+	OWCRC(OW_READ_STATUS, &crc);
+	OWSendCmd(ROM, OW_READ_STATUS);
+
+	OWWriteByte(0x00);
+	OWCRC(0x00, &crc);
+
+	OWWriteByte(0x00);
+	OWCRC(0x00, &crc);
+	
+	if (crc != OWReadByte()) {
+	    uart_putsP(PSTR("CRC mismatch on command & address\n\r"));
+	    return;
+	}
+	
+	crc = 0;
+	for (i = 0; i < 8; i++) {
+	    temp = OWReadByte();
+	    uart_puts_hex(temp);
+	    OWCRC(temp, &crc);
+	    uart_putsP(PSTR(" "));
+	}
+	uart_putsP(PSTR("\n\r"));
+	if (crc != OWReadByte()) {
+	    uart_putsP(PSTR("CRC mismatch on data\n\r"));
+	    return;
+	}
+    } else if (cmd.buf[0] == 'w' && cmd.buf[1] == 'e') {
+	if (cmd.len < 26) {
+	    uart_putsP(PSTR("Unable to parse ROM ID\n\r"));
+	    return;
+	}
+
+	for (i = 0; i < 8; i++)
+	    ROM[i] = (int)strtol((char *)cmd.buf + 3 * (i + 1), (char **)NULL, 16);
+
+	if (ROM[0] != OW_FAMILY_ROM) {
+	    uart_putsP(PSTR("ROM specified isn't a ROM\n\r"));
+	    return;
+	}
+
+	buf[0] = (int)strtol((char *)cmd.buf + 27, (char **)NULL, 16);	/* Address */
+	buf[1] = (int)strtol((char *)cmd.buf + 30, (char **)NULL, 16);	/* Data .. */
+	buf[2] = (int)strtol((char *)cmd.buf + 33, (char **)NULL, 16);
+	
+	if (OWTouchReset() != 0) {
+	    uart_putsP(PSTR("No presence\n\r"));
+	    return;
+	}
+
+	i = OWProgROM(ROM, buf[0], 2, &buf[1], 0, 0);
+	uart_putsP(PSTR("OWProgROM returned "));
+	uart_puts_dec(i, 0);
+	uart_putsP(PSTR("\n\r"));
+    } else if (cmd.buf[0] == 'r' && cmd.buf[1] == 'r') {
+	if (cmd.len < 26) {
+	    uart_putsP(PSTR("Unable to parse ROM ID\n\r"));
+	    return;
+	}
+
+	for (i = 0; i < 8; i++)
+	    ROM[i] = (int)strtol((char *)cmd.buf + 3 * (i + 1), (char **)NULL, 16);
+
+	if (ROM[0] != OW_FAMILY_ROM) {
+	    uart_putsP(PSTR("ROM specified isn't a ROM\n\r"));
+	    return;
+	}
+
+	crc = 0;
+	OWSendCmd(ROM, OW_READ_MEMORY);
+	OWCRC(OW_READ_MEMORY, &crc);
+
+	OWWriteByte(0x00);
+	OWCRC(0x00, &crc);
+
+	OWWriteByte(0x00);
+	OWCRC(0x00, &crc);
+
+	if (crc != OWReadByte()) {
+	    uart_putsP(PSTR("CRC mismatch on command & address\n\r"));
+	    return;
+	}
+
+	crc = 0;
+	for (buf[0] = 0; buf[0] < 128; buf[0]++) {
+	    buf[1] = OWReadByte();
+	    if (buf[0] > 0) {
+		if (buf[0] % 16 != 0)
+		    uart_putsP(PSTR(" "));
+		else
+		    uart_putsP(PSTR("\n\r"));
+	    }
+	    
+	    uart_puts_hex(buf[1]);
+	    OWCRC(buf[1], &crc);
+	}
+	uart_putsP(PSTR("\n\r"));
+	if (crc != OWReadByte()) {
+	    uart_putsP(PSTR("CRC mismatch on data\n\r"));
+	    return;
+	}
+	
     } else if (cmd.buf[0] == 'w' && cmd.buf[1] == 'c') {
 	if (cmd.len < 5) {
 	    uart_putsP(PSTR("No arguments\n\r"));
@@ -277,6 +438,7 @@
 	    
 	OWSendCmd(ROM, OW_CONVERTT_CMD);
 	i = 0;
+	/* Wait for the conversion */
 	while (OWReadBit() == 0) {
 	    i++;
 	}
@@ -431,8 +593,36 @@
 	uart_putsP(PSTR("0x"));
 	uart_puts_hex(crc);
 	uart_putsP(PSTR("\n\r")); 
+    } else if (cmd.buf[0] == 'd' && cmd.buf[1] == 'd') {
+	crc = strtol((char *)cmd.buf + 8, (char **)NULL, 16);
+	switch (tolower(cmd.buf[4])) {
+	    case 'a':
+		DDRA = crc;
+		break;
+		
+	    case 'b':
+		DDRB = crc;
+		break;
+		
+	    case 'c':
+		DDRC = crc;
+		break;
+		
+	    case 'd':
+		DDRD = crc;
+		break;
+		
+	    default:
+		uart_putsP(PSTR("Unknown port\n\r"));
+		return;
+	}
+	uart_putsP(PSTR("0x"));
+	uart_puts_hex(crc);
+	uart_putsP(PSTR("\n\r")); 
+#ifdef WITHUSB
     } else if (cmd.buf[0] == 'u' && cmd.buf[1] == 's') {
 	usb_gendata();
+#endif
     } else {
       badcmd:
 	uart_putsP(PSTR("Unknown command, ? for a list\n\r"));