diff options
Diffstat (limited to 'avr/main_jtag.c.orig')
| -rw-r--r-- | avr/main_jtag.c.orig | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/avr/main_jtag.c.orig b/avr/main_jtag.c.orig new file mode 100644 index 0000000..70cccb7 --- /dev/null +++ b/avr/main_jtag.c.orig @@ -0,0 +1,196 @@ +/************************************************************************************************
+ * Project: USB AVR-ISP
+ * Author: Christian Ulrich
+ * Contact: christian at ullihome dot de
+ *
+ * Creation Date: 2008-12-10
+ * Copyright: (c) 2008 by Christian Ulrich
+ * License: GPLv2 for private use
+ * commercial use prohibited
+ *
+ * Changes:
+ ***********************************************************************************************/
+
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <avr/pgmspace.h>
+#include <avr/eeprom.h>
+#include <util/delay.h>
+#include <avr/wdt.h>
+#include "usbdrv.h"
+#include "usbconfig.h"
+#include "led.h"
+#include "timer.h"
+#include "main.h"
+#include "jtag.h"
+
+#define FUNC_READ_CHAIN 1
+#define FUNC_WRITE_CHAIN 2
+#define FUNC_TAP_STATE 3
+#define FUNC_GET_TAP_STATE 4
+#define FUNC_OPEN 5
+#define FUNC_CLOSE 6
+#define FUNC_SHIFTBITS 7
+#define FUNC_CHAINSIZE 8
+#define FUNC_EXECCHAIN 9
+
+#define FUNC_START_BOOTLOADER 30
+#define FUNC_GET_TYPE 0xFE
+
+#define STATE_IDLE 0
+#define STATE_READ 1
+#define STATE_WRITE 2
+
+uint8_t usb_state = STATE_IDLE;
+
+#ifndef USBASP_COMPATIBLE
+led_t leds[] = {{4,LED_OFF,LED_OFF},
+ {3,LED_OFF,LED_OFF},
+ {5,LED_OFF,LED_OFF}};
+#else
+led_t leds[] = {{0,LED_OFF,LED_OFF},
+ {1,LED_OFF,LED_OFF},
+ {3,LED_OFF,LED_OFF}};
+#endif
+const uint8_t led_count = sizeof(leds)/sizeof(led_t);
+
+
+#define MAX_CHAINSIZE 900
+unsigned char JTAG_CHAIN[MAX_CHAINSIZE];
+unsigned int chainpos = 0;
+
+int main(void)
+{
+ extern uchar usbNewDeviceAddr;
+ uint8_t i;
+ PORTC |= (1<<PC2);
+//Reconnect USB
+ usbDeviceDisconnect(); /* enforce re-enumeration, do this while interrupts are disabled! */
+ i = 0;
+ while(--i)
+ _delay_ms(2);
+ usbDeviceConnect();
+ usbInit();
+ sei();
+
+
+ leds[LED_RED].frequency = LED_ON;
+ LED_init();
+ for (i=0;i<3;i++)
+ TIMER_delay(250);
+ leds[LED_RED].frequency = LED_OFF;
+
+ while(1)
+ {
+ usbPoll();
+ LED_poll();
+ if(usbNewDeviceAddr)
+ leds[LED_BLUE].frequency = LED_ON;
+ }
+}
+
+static uchar replyBuffer[8];
+
+uint8_t usbFunctionSetup(uint8_t data[8])
+{
+ uchar len = 0;
+
+ usb_state = STATE_IDLE;
+ if(data[1] == FUNC_GET_TYPE)
+ {
+ replyBuffer[0] = 10;
+ len = 1;
+ }
+ else if(data[1] == FUNC_START_BOOTLOADER)
+ {
+ cli();
+ wdt_enable(WDTO_15MS);
+ while(1);
+ len = 0;
+ }
+ else if(data[1] == FUNC_READ_CHAIN)
+ {
+ chainpos = 0;
+ usb_state = STATE_READ;
+ len = 0xff;
+ }
+ else if(data[1] == FUNC_WRITE_CHAIN)
+ {
+ chainpos = 0;
+ usb_state = STATE_WRITE;
+ len = 0xff;
+ }
+ else if(data[1] == FUNC_TAP_STATE)
+ {
+ JTAG_goto_tap_state(data[2]);
+ len = 0;
+ }
+ else if(data[1] == FUNC_GET_TAP_STATE)
+ {
+ replyBuffer[0] = JTAG_TAP_STATE;
+ len = 1;
+ }
+ else if(data[1] == FUNC_OPEN)
+ {
+ leds[LED_BLUE].frequency = LED_ON;
+ JTAG_attatch();
+ len = 0;
+ }
+ else if(data[1] == FUNC_CLOSE)
+ {
+ leds[LED_BLUE].frequency = LED_OFF;
+ JTAG_detatch();
+ len = 0;
+ }
+ else if(data[1] == FUNC_SHIFTBITS)
+ {
+ replyBuffer[0] = JTAG_shift_bits(data[2],data[3]);
+ len = 1;
+ }
+ else if(data[1] == FUNC_CHAINSIZE)
+ {
+ replyBuffer[0] = chainpos;
+ replyBuffer[1] = chainpos>>8;
+ len = 2;
+ }
+ else if (data[1] == FUNC_EXECCHAIN)
+ {
+/* unsigned char i;
+ for (i = 0; i < len / 2; i++)
+ {
+ unsigned char z = JTAG_CHAIN[i];
+ JTAG_CHAIN[i] = JTAG_CHAIN[len - i - 1];
+ JTAG_CHAIN[len - i - 1] = z;
+ }*/
+ JTAG_shift_bytes(JTAG_CHAIN,chainpos);
+ leds[LED_GREEN].counter = 10;
+ leds[LED_GREEN].frequency = LED_FLASH_NEG;
+ }
+ leds[LED_BLUE].counter = 10;
+ leds[LED_BLUE].frequency = LED_FLASH_NEG;
+ usbMsgPtr = replyBuffer;
+ return len;
+}
+
+uint8_t usbFunctionRead( uint8_t *data, uint8_t len )
+{
+ if (usb_state != STATE_READ)
+ return 0xff;
+ uint8_t asize = 0;
+ memcpy(data,&JTAG_CHAIN[chainpos],len);
+ chainpos += len;
+ asize+=len;
+ return asize;
+}
+
+uint8_t usbFunctionWrite( uint8_t *data, uint8_t len )
+{
+ if (usb_state != STATE_WRITE)
+ return 0xff;
+ memcpy(&JTAG_CHAIN[chainpos],data,len);
+ chainpos += len;
+ return len;
+}
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