diff options
Diffstat (limited to 'Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c')
-rw-r--r-- | Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c | 442 |
1 files changed, 221 insertions, 221 deletions
diff --git a/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c b/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c index 72a38f824..5598791a6 100644 --- a/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c +++ b/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c @@ -1,221 +1,221 @@ -/*
- LUFA Library
- Copyright (C) Dean Camera, 2010.
-
- dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
-*/
-
-/*
- Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
-
- Permission to use, copy, modify, distribute, and sell this
- software and its documentation for any purpose is hereby granted
- without fee, provided that the above copyright notice appear in
- all copies and that both that the copyright notice and this
- permission notice and warranty disclaimer appear in supporting
- documentation, and that the name of the author not be used in
- advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- The author disclaim all warranties with regard to this
- software, including all implied warranties of merchantability
- and fitness. In no event shall the author be liable for any
- special, indirect or consequential damages or any damages
- whatsoever resulting from loss of use, data or profits, whether
- in an action of contract, negligence or other tortious action,
- arising out of or in connection with the use or performance of
- this software.
-*/
-
-/** \file
- *
- * Target-related functions for the PDI Protocol decoder.
- */
-
-#define INCLUDE_FROM_XPROGTARGET_C
-#include "XPROGTarget.h"
-
-#if defined(ENABLE_XPROG_PROTOCOL) || defined(__DOXYGEN__)
-
-/** Flag to indicate if the USART is currently in Tx or Rx mode. */
-volatile bool IsSending;
-
-/** Enables the target's PDI interface, holding the target in reset until PDI mode is exited. */
-void XPROGTarget_EnableTargetPDI(void)
-{
- IsSending = false;
-
- /* Set Tx and XCK as outputs, Rx as input */
- DDRD |= (1 << 5) | (1 << 3);
- DDRD &= ~(1 << 2);
-
- /* Set DATA line high for at least 90ns to disable /RESET functionality */
- PORTD |= (1 << 3);
- _delay_us(1);
-
- /* Set up the synchronous USART for XMEGA communications - 8 data bits, even parity, 2 stop bits */
- UBRR1 = (F_CPU / XPROG_HARDWARE_SPEED);
- UCSR1B = (1 << TXEN1);
- UCSR1C = (1 << UMSEL10) | (1 << UPM11) | (1 << USBS1) | (1 << UCSZ11) | (1 << UCSZ10) | (1 << UCPOL1);
-
- /* Send two BREAKs of 12 bits each to enable PDI interface (need at least 16 idle bits) */
- XPROGTarget_SendBreak();
- XPROGTarget_SendBreak();
-}
-
-/** Enables the target's TPI interface, holding the target in reset until TPI mode is exited. */
-void XPROGTarget_EnableTargetTPI(void)
-{
- IsSending = false;
-
- /* Set /RESET line low for at least 400ns to enable TPI functionality */
- AUX_LINE_DDR |= AUX_LINE_MASK;
- AUX_LINE_PORT &= ~AUX_LINE_MASK;
- _delay_us(1);
-
- /* Set Tx and XCK as outputs, Rx as input */
- DDRD |= (1 << 5) | (1 << 3);
- DDRD &= ~(1 << 2);
-
- /* Set up the synchronous USART for TINY communications - 8 data bits, even parity, 2 stop bits */
- UBRR1 = (F_CPU / XPROG_HARDWARE_SPEED);
- UCSR1B = (1 << TXEN1);
- UCSR1C = (1 << UMSEL10) | (1 << UPM11) | (1 << USBS1) | (1 << UCSZ11) | (1 << UCSZ10) | (1 << UCPOL1);
-
- /* Send two BREAKs of 12 bits each to enable TPI interface (need at least 16 idle bits) */
- XPROGTarget_SendBreak();
- XPROGTarget_SendBreak();
-}
-
-/** Disables the target's PDI interface, exits programming mode and starts the target's application. */
-void XPROGTarget_DisableTargetPDI(void)
-{
- /* Switch to Rx mode to ensure that all pending transmissions are complete */
- XPROGTarget_SetRxMode();
-
- /* Turn off receiver and transmitter of the USART, clear settings */
- UCSR1A = ((1 << TXC1) | (1 << RXC1));
- UCSR1B = 0;
- UCSR1C = 0;
-
- /* Tristate all pins */
- DDRD &= ~((1 << 5) | (1 << 3));
- PORTD &= ~((1 << 5) | (1 << 3) | (1 << 2));
-}
-
-/** Disables the target's TPI interface, exits programming mode and starts the target's application. */
-void XPROGTarget_DisableTargetTPI(void)
-{
- /* Switch to Rx mode to ensure that all pending transmissions are complete */
- XPROGTarget_SetRxMode();
-
- /* Turn off receiver and transmitter of the USART, clear settings */
- UCSR1A |= (1 << TXC1) | (1 << RXC1);
- UCSR1B = 0;
- UCSR1C = 0;
-
- /* Set all USART lines as input, tristate */
- DDRD &= ~((1 << 5) | (1 << 3));
- PORTD &= ~((1 << 5) | (1 << 3) | (1 << 2));
-
- /* Tristate target /RESET line */
- AUX_LINE_DDR &= ~AUX_LINE_MASK;
- AUX_LINE_PORT &= ~AUX_LINE_MASK;
-}
-
-/** Sends a byte via the USART.
- *
- * \param[in] Byte Byte to send through the USART
- */
-void XPROGTarget_SendByte(const uint8_t Byte)
-{
- /* Switch to Tx mode if currently in Rx mode */
- if (!(IsSending))
- XPROGTarget_SetTxMode();
-
- /* Wait until there is space in the hardware Tx buffer before writing */
- while (!(UCSR1A & (1 << UDRE1)));
- UCSR1A |= (1 << TXC1);
- UDR1 = Byte;
-
- if (TimeoutMSRemaining)
- TimeoutMSRemaining = COMMAND_TIMEOUT_MS;
-}
-
-/** Receives a byte via the software USART, blocking until data is received.
- *
- * \return Received byte from the USART
- */
-uint8_t XPROGTarget_ReceiveByte(void)
-{
- /* Switch to Rx mode if currently in Tx mode */
- if (IsSending)
- XPROGTarget_SetRxMode();
-
- /* Wait until a byte has been received before reading */
- while (!(UCSR1A & (1 << RXC1)) && TimeoutMSRemaining);
-
- if (TimeoutMSRemaining)
- TimeoutMSRemaining = COMMAND_TIMEOUT_MS;
-
- return UDR1;
-}
-
-/** Sends a BREAK via the USART to the attached target, consisting of a full frame of idle bits. */
-void XPROGTarget_SendBreak(void)
-{
- /* Switch to Tx mode if currently in Rx mode */
- if (!(IsSending))
- XPROGTarget_SetTxMode();
-
- /* Need to do nothing for a full frame to send a BREAK */
- for (uint8_t i = 0; i < BITS_IN_USART_FRAME; i++)
- {
- /* Wait for a full cycle of the clock */
- while (PIND & (1 << 5));
- while (!(PIND & (1 << 5)));
- }
-
- if (TimeoutMSRemaining)
- TimeoutMSRemaining = COMMAND_TIMEOUT_MS;
-}
-
-static void XPROGTarget_SetTxMode(void)
-{
- /* Wait for a full cycle of the clock */
- while (PIND & (1 << 5));
- while (!(PIND & (1 << 5)));
-
- PORTD |= (1 << 3);
- DDRD |= (1 << 3);
-
- UCSR1B &= ~(1 << RXEN1);
- UCSR1B |= (1 << TXEN1);
-
- IsSending = true;
-
- if (TimeoutMSRemaining)
- TimeoutMSRemaining = COMMAND_TIMEOUT_MS;
-
- IsSending = true;
-}
-
-static void XPROGTarget_SetRxMode(void)
-{
- while (!(UCSR1A & (1 << TXC1)));
- UCSR1A |= (1 << TXC1);
-
- UCSR1B &= ~(1 << TXEN1);
- UCSR1B |= (1 << RXEN1);
-
- DDRD &= ~(1 << 3);
- PORTD &= ~(1 << 3);
-
- if (TimeoutMSRemaining)
- TimeoutMSRemaining = COMMAND_TIMEOUT_MS;
-
- IsSending = false;
-}
-
-#endif
+/* + LUFA Library + Copyright (C) Dean Camera, 2010. + + dean [at] fourwalledcubicle [dot] com + www.fourwalledcubicle.com +*/ + +/* + Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, distribute, and sell this + software and its documentation for any purpose is hereby granted + without fee, provided that the above copyright notice appear in + all copies and that both that the copyright notice and this + permission notice and warranty disclaimer appear in supporting + documentation, and that the name of the author not be used in + advertising or publicity pertaining to distribution of the + software without specific, written prior permission. + + The author disclaim all warranties with regard to this + software, including all implied warranties of merchantability + and fitness. In no event shall the author be liable for any + special, indirect or consequential damages or any damages + whatsoever resulting from loss of use, data or profits, whether + in an action of contract, negligence or other tortious action, + arising out of or in connection with the use or performance of + this software. +*/ + +/** \file + * + * Target-related functions for the PDI Protocol decoder. + */ + +#define INCLUDE_FROM_XPROGTARGET_C +#include "XPROGTarget.h" + +#if defined(ENABLE_XPROG_PROTOCOL) || defined(__DOXYGEN__) + +/** Flag to indicate if the USART is currently in Tx or Rx mode. */ +volatile bool IsSending; + +/** Enables the target's PDI interface, holding the target in reset until PDI mode is exited. */ +void XPROGTarget_EnableTargetPDI(void) +{ + IsSending = false; + + /* Set Tx and XCK as outputs, Rx as input */ + DDRD |= (1 << 5) | (1 << 3); + DDRD &= ~(1 << 2); + + /* Set DATA line high for at least 90ns to disable /RESET functionality */ + PORTD |= (1 << 3); + _delay_us(1); + + /* Set up the synchronous USART for XMEGA communications - 8 data bits, even parity, 2 stop bits */ + UBRR1 = (F_CPU / XPROG_HARDWARE_SPEED); + UCSR1B = (1 << TXEN1); + UCSR1C = (1 << UMSEL10) | (1 << UPM11) | (1 << USBS1) | (1 << UCSZ11) | (1 << UCSZ10) | (1 << UCPOL1); + + /* Send two BREAKs of 12 bits each to enable PDI interface (need at least 16 idle bits) */ + XPROGTarget_SendBreak(); + XPROGTarget_SendBreak(); +} + +/** Enables the target's TPI interface, holding the target in reset until TPI mode is exited. */ +void XPROGTarget_EnableTargetTPI(void) +{ + IsSending = false; + + /* Set /RESET line low for at least 400ns to enable TPI functionality */ + AUX_LINE_DDR |= AUX_LINE_MASK; + AUX_LINE_PORT &= ~AUX_LINE_MASK; + _delay_us(1); + + /* Set Tx and XCK as outputs, Rx as input */ + DDRD |= (1 << 5) | (1 << 3); + DDRD &= ~(1 << 2); + + /* Set up the synchronous USART for TINY communications - 8 data bits, even parity, 2 stop bits */ + UBRR1 = (F_CPU / XPROG_HARDWARE_SPEED); + UCSR1B = (1 << TXEN1); + UCSR1C = (1 << UMSEL10) | (1 << UPM11) | (1 << USBS1) | (1 << UCSZ11) | (1 << UCSZ10) | (1 << UCPOL1); + + /* Send two BREAKs of 12 bits each to enable TPI interface (need at least 16 idle bits) */ + XPROGTarget_SendBreak(); + XPROGTarget_SendBreak(); +} + +/** Disables the target's PDI interface, exits programming mode and starts the target's application. */ +void XPROGTarget_DisableTargetPDI(void) +{ + /* Switch to Rx mode to ensure that all pending transmissions are complete */ + XPROGTarget_SetRxMode(); + + /* Turn off receiver and transmitter of the USART, clear settings */ + UCSR1A = ((1 << TXC1) | (1 << RXC1)); + UCSR1B = 0; + UCSR1C = 0; + + /* Tristate all pins */ + DDRD &= ~((1 << 5) | (1 << 3)); + PORTD &= ~((1 << 5) | (1 << 3) | (1 << 2)); +} + +/** Disables the target's TPI interface, exits programming mode and starts the target's application. */ +void XPROGTarget_DisableTargetTPI(void) +{ + /* Switch to Rx mode to ensure that all pending transmissions are complete */ + XPROGTarget_SetRxMode(); + + /* Turn off receiver and transmitter of the USART, clear settings */ + UCSR1A |= (1 << TXC1) | (1 << RXC1); + UCSR1B = 0; + UCSR1C = 0; + + /* Set all USART lines as input, tristate */ + DDRD &= ~((1 << 5) | (1 << 3)); + PORTD &= ~((1 << 5) | (1 << 3) | (1 << 2)); + + /* Tristate target /RESET line */ + AUX_LINE_DDR &= ~AUX_LINE_MASK; + AUX_LINE_PORT &= ~AUX_LINE_MASK; +} + +/** Sends a byte via the USART. + * + * \param[in] Byte Byte to send through the USART + */ +void XPROGTarget_SendByte(const uint8_t Byte) +{ + /* Switch to Tx mode if currently in Rx mode */ + if (!(IsSending)) + XPROGTarget_SetTxMode(); + + /* Wait until there is space in the hardware Tx buffer before writing */ + while (!(UCSR1A & (1 << UDRE1))); + UCSR1A |= (1 << TXC1); + UDR1 = Byte; + + if (TimeoutMSRemaining) + TimeoutMSRemaining = COMMAND_TIMEOUT_MS; +} + +/** Receives a byte via the software USART, blocking until data is received. + * + * \return Received byte from the USART + */ +uint8_t XPROGTarget_ReceiveByte(void) +{ + /* Switch to Rx mode if currently in Tx mode */ + if (IsSending) + XPROGTarget_SetRxMode(); + + /* Wait until a byte has been received before reading */ + while (!(UCSR1A & (1 << RXC1)) && TimeoutMSRemaining); + + if (TimeoutMSRemaining) + TimeoutMSRemaining = COMMAND_TIMEOUT_MS; + + return UDR1; +} + +/** Sends a BREAK via the USART to the attached target, consisting of a full frame of idle bits. */ +void XPROGTarget_SendBreak(void) +{ + /* Switch to Tx mode if currently in Rx mode */ + if (!(IsSending)) + XPROGTarget_SetTxMode(); + + /* Need to do nothing for a full frame to send a BREAK */ + for (uint8_t i = 0; i < BITS_IN_USART_FRAME; i++) + { + /* Wait for a full cycle of the clock */ + while (PIND & (1 << 5)); + while (!(PIND & (1 << 5))); + } + + if (TimeoutMSRemaining) + TimeoutMSRemaining = COMMAND_TIMEOUT_MS; +} + +static void XPROGTarget_SetTxMode(void) +{ + /* Wait for a full cycle of the clock */ + while (PIND & (1 << 5)); + while (!(PIND & (1 << 5))); + + PORTD |= (1 << 3); + DDRD |= (1 << 3); + + UCSR1B &= ~(1 << RXEN1); + UCSR1B |= (1 << TXEN1); + + IsSending = true; + + if (TimeoutMSRemaining) + TimeoutMSRemaining = COMMAND_TIMEOUT_MS; + + IsSending = true; +} + +static void XPROGTarget_SetRxMode(void) +{ + while (!(UCSR1A & (1 << TXC1))); + UCSR1A |= (1 << TXC1); + + UCSR1B &= ~(1 << TXEN1); + UCSR1B |= (1 << RXEN1); + + DDRD &= ~(1 << 3); + PORTD &= ~(1 << 3); + + if (TimeoutMSRemaining) + TimeoutMSRemaining = COMMAND_TIMEOUT_MS; + + IsSending = false; +} + +#endif |