diff options
Diffstat (limited to 'lib/lufa/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c')
| -rw-r--r-- | lib/lufa/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c | 209 |
1 files changed, 0 insertions, 209 deletions
diff --git a/lib/lufa/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c b/lib/lufa/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c deleted file mode 100644 index 0455329c3d..0000000000 --- a/lib/lufa/Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c +++ /dev/null @@ -1,209 +0,0 @@ -/* - LUFA Library - Copyright (C) Dean Camera, 2017. - - dean [at] fourwalledcubicle [dot] com - www.lufa-lib.org -*/ - -/* - Copyright 2017 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 disclaims 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. */ -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(100); - - /* Set up the synchronous USART for XMEGA communications - 8 data bits, even parity, 2 stop bits */ - UBRR1 = ((F_CPU / 2 / XPROG_HARDWARE_SPEED) - 1); - UCSR1B = (1 << TXEN1); - UCSR1C = (1 << UMSEL10) | (1 << UPM11) | (1 << USBS1) | (1 << UCSZ11) | (1 << UCSZ10) | (1 << UCPOL1); - - /* Send two IDLEs of 12 bits each to enable PDI interface (need at least 16 idle bits) */ - XPROGTarget_SendIdle(); - XPROGTarget_SendIdle(); -} - -/** 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(100); - - /* Set Tx and XCK as outputs, Rx as input */ - DDRD |= (1 << 5) | (1 << 3); - DDRD &= ~(1 << 2); - - /* Set up the synchronous USART for TPI communications - 8 data bits, even parity, 2 stop bits */ - UBRR1 = ((F_CPU / 2 / XPROG_HARDWARE_SPEED) - 1); - UCSR1B = (1 << TXEN1); - UCSR1C = (1 << UMSEL10) | (1 << UPM11) | (1 << USBS1) | (1 << UCSZ11) | (1 << UCSZ10) | (1 << UCPOL1); - - /* Send two IDLEs of 12 bits each to enable TPI interface (need at least 16 idle bits) */ - XPROGTarget_SendIdle(); - XPROGTarget_SendIdle(); -} - -/** 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 */ - if (IsSending) - 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 */ - if (IsSending) - 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 inputs, 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; -} - -/** Receives a byte via the hardware USART, blocking until data is received or timeout expired. - * - * \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)) && TimeoutTicksRemaining); - - return UDR1; -} - -/** Sends an IDLE via the USART to the attached target, consisting of a full frame of idle bits. */ -void XPROGTarget_SendIdle(void) -{ - /* Switch to Tx mode if currently in Rx mode */ - if (!(IsSending)) - XPROGTarget_SetTxMode(); - - /* Need to do nothing for a full frame to send an IDLE */ - 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))); - while (PIND & (1 << 5)); - } -} - -static void XPROGTarget_SetTxMode(void) -{ - /* Wait for a full cycle of the clock */ - while (PIND & (1 << 5)); - while (!(PIND & (1 << 5))); - while (PIND & (1 << 5)); - - PORTD |= (1 << 3); - DDRD |= (1 << 3); - - UCSR1B &= ~(1 << RXEN1); - UCSR1B |= (1 << TXEN1); - - 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); - - IsSending = false; -} - -#endif - |