/*\r
LUFA Library\r
- Copyright (C) Dean Camera, 2009.\r
+ Copyright (C) Dean Camera, 2010.\r
\r
dean [at] fourwalledcubicle [dot] com\r
www.fourwalledcubicle.com\r
*/\r
\r
/*\r
- Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
- Permission to use, copy, modify, and distribute this software\r
- and its documentation for any purpose and without fee is hereby\r
- granted, provided that the above copyright notice appear in all\r
- copies and that both that the copyright notice and this\r
- permission notice and warranty disclaimer appear in supporting\r
- documentation, and that the name of the author not be used in\r
- advertising or publicity pertaining to distribution of the\r
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+\r
+ Permission to use, copy, modify, distribute, and sell this \r
+ software and its documentation for any purpose is hereby granted\r
+ without fee, provided that the above copyright notice appear in \r
+ all copies and that both that the copyright notice and this\r
+ permission notice and warranty disclaimer appear in supporting \r
+ documentation, and that the name of the author not be used in \r
+ advertising or publicity pertaining to distribution of the \r
software without specific, written prior permission.\r
\r
The author disclaim all warranties with regard to this\r
IsSending = false;\r
\r
/* Set /RESET line low for at least 90ns to enable TPI functionality */\r
- RESET_LINE_DDR |= RESET_LINE_MASK;\r
- RESET_LINE_PORT &= ~RESET_LINE_MASK;\r
+ AUX_LINE_DDR |= AUX_LINE_MASK;\r
+ AUX_LINE_PORT &= ~AUX_LINE_MASK;\r
asm volatile ("NOP"::);\r
asm volatile ("NOP"::);\r
\r
#endif\r
\r
/* Tristate target /RESET line */\r
- RESET_LINE_DDR &= ~RESET_LINE_MASK;\r
- RESET_LINE_PORT &= ~RESET_LINE_MASK;\r
+ AUX_LINE_DDR &= ~AUX_LINE_MASK;\r
+ AUX_LINE_PORT &= ~AUX_LINE_MASK;\r
}\r
\r
/** Sends a byte via the USART.\r
*/\r
void XPROGTarget_SendByte(const uint8_t Byte)\r
{\r
-#if defined(XPROG_VIA_HARDWARE_USART)\r
/* Switch to Tx mode if currently in Rx mode */\r
if (!(IsSending))\r
- {\r
- PORTD |= (1 << 3);\r
- DDRD |= (1 << 3);\r
-\r
- UCSR1B |= (1 << TXEN1);\r
- UCSR1B &= ~(1 << RXEN1);\r
- \r
- IsSending = true;\r
- }\r
- \r
+ XPROGTarget_SetTxMode();\r
+ \r
+#if defined(XPROG_VIA_HARDWARE_USART)\r
/* Wait until there is space in the hardware Tx buffer before writing */\r
while (!(UCSR1A & (1 << UDRE1)));\r
UCSR1A |= (1 << TXC1);\r
UDR1 = Byte;\r
#else\r
- /* Switch to Tx mode if currently in Rx mode */\r
- if (!(IsSending))\r
- {\r
- BITBANG_PDIDATA_PORT |= BITBANG_PDIDATA_MASK;\r
- BITBANG_PDIDATA_DDR |= BITBANG_PDIDATA_MASK;\r
-\r
- IsSending = true;\r
- }\r
-\r
/* Calculate the new USART frame data here while while we wait for a previous byte (if any) to finish sending */\r
uint16_t NewUSARTData = ((1 << 11) | (1 << 10) | (0 << 9) | ((uint16_t)Byte << 1) | (0 << 0));\r
\r
*/\r
uint8_t XPROGTarget_ReceiveByte(void)\r
{\r
-#if defined(XPROG_VIA_HARDWARE_USART)\r
/* Switch to Rx mode if currently in Tx mode */\r
if (IsSending)\r
- {\r
- while (!(UCSR1A & (1 << TXC1)));\r
- UCSR1A |= (1 << TXC1);\r
-\r
- UCSR1B &= ~(1 << TXEN1);\r
- UCSR1B |= (1 << RXEN1);\r
-\r
- DDRD &= ~(1 << 3);\r
- PORTD &= ~(1 << 3);\r
- \r
- IsSending = false;\r
- }\r
+ XPROGTarget_SetRxMode();\r
\r
+#if defined(XPROG_VIA_HARDWARE_USART)\r
/* Wait until a byte has been received before reading */\r
while (!(UCSR1A & (1 << RXC1)) && TimeoutMSRemaining);\r
return UDR1;\r
#else\r
- /* Switch to Rx mode if currently in Tx mode */\r
- if (IsSending)\r
- {\r
- while (SoftUSART_BitCount);\r
-\r
- BITBANG_PDIDATA_DDR &= ~BITBANG_PDIDATA_MASK;\r
- BITBANG_PDIDATA_PORT &= ~BITBANG_PDIDATA_MASK;\r
-\r
- IsSending = false;\r
- }\r
-\r
/* Wait until a byte has been received before reading */\r
SoftUSART_BitCount = BITS_IN_USART_FRAME;\r
while (SoftUSART_BitCount && TimeoutMSRemaining);\r
/** Sends a BREAK via the USART to the attached target, consisting of a full frame of idle bits. */\r
void XPROGTarget_SendBreak(void)\r
{\r
-#if defined(XPROG_VIA_HARDWARE_USART)\r
/* Switch to Tx mode if currently in Rx mode */\r
if (!(IsSending))\r
- {\r
- PORTD |= (1 << 3);\r
- DDRD |= (1 << 3);\r
-\r
- UCSR1B &= ~(1 << RXEN1);\r
- UCSR1B |= (1 << TXEN1);\r
- \r
- IsSending = true;\r
- }\r
+ XPROGTarget_SetTxMode();\r
\r
+#if defined(XPROG_VIA_HARDWARE_USART)\r
/* Need to do nothing for a full frame to send a BREAK */\r
for (uint8_t i = 0; i < BITS_IN_USART_FRAME; i++)\r
{\r
while (!(PIND & (1 << 5)));\r
}\r
#else\r
- /* Switch to Tx mode if currently in Rx mode */\r
- if (!(IsSending))\r
+ while (SoftUSART_BitCount);\r
+\r
+ /* Need to do nothing for a full frame to send a BREAK */\r
+ SoftUSART_Data = 0x0FFF;\r
+ SoftUSART_BitCount = BITS_IN_USART_FRAME;\r
+#endif\r
+}\r
+\r
+static void XPROGTarget_SetTxMode(void)\r
+{\r
+#if defined(XPROG_VIA_HARDWARE_USART)\r
+ /* Wait for a full cycle of the clock */\r
+ while (PIND & (1 << 5));\r
+ while (!(PIND & (1 << 5)));\r
+\r
+ PORTD |= (1 << 3);\r
+ DDRD |= (1 << 3);\r
+\r
+ UCSR1B &= ~(1 << RXEN1);\r
+ UCSR1B |= (1 << TXEN1);\r
+ \r
+ IsSending = true;\r
+#else\r
+ while (SoftUSART_BitCount);\r
+\r
+ /* Wait for a full cycle of the clock */\r
+ SoftUSART_Data = 0x0001;\r
+ SoftUSART_BitCount = 1;\r
+ while (SoftUSART_BitCount);\r
+\r
+ if (XPROG_SelectedProtocol == XPRG_PROTOCOL_PDI)\r
{\r
BITBANG_PDIDATA_PORT |= BITBANG_PDIDATA_MASK;\r
BITBANG_PDIDATA_DDR |= BITBANG_PDIDATA_MASK;\r
-\r
- IsSending = true;\r
}\r
- \r
+ else\r
+ {\r
+ BITBANG_TPIDATA_PORT |= BITBANG_TPIDATA_MASK;\r
+ BITBANG_TPIDATA_DDR |= BITBANG_TPIDATA_MASK; \r
+ }\r
+#endif\r
+\r
+ IsSending = true;\r
+}\r
+\r
+static void XPROGTarget_SetRxMode(void)\r
+{\r
+#if defined(XPROG_VIA_HARDWARE_USART)\r
+ while (!(UCSR1A & (1 << TXC1)));\r
+ UCSR1A |= (1 << TXC1);\r
+\r
+ UCSR1B &= ~(1 << TXEN1);\r
+ UCSR1B |= (1 << RXEN1);\r
+\r
+ DDRD &= ~(1 << 3);\r
+ PORTD &= ~(1 << 3);\r
+#else\r
while (SoftUSART_BitCount);\r
\r
- /* Need to do nothing for a full frame to send a BREAK */\r
- SoftUSART_Data = 0x0FFF;\r
- SoftUSART_BitCount = BITS_IN_USART_FRAME;\r
+ if (XPROG_SelectedProtocol == XPRG_PROTOCOL_PDI)\r
+ {\r
+ BITBANG_PDIDATA_DDR &= ~BITBANG_PDIDATA_MASK;\r
+ BITBANG_PDIDATA_PORT &= ~BITBANG_PDIDATA_MASK;\r
+ }\r
+ else\r
+ {\r
+ BITBANG_TPIDATA_DDR &= ~BITBANG_TPIDATA_MASK;\r
+ BITBANG_TPIDATA_PORT &= ~BITBANG_TPIDATA_MASK; \r
+ }\r
+ \r
+ /* Wait until DATA line has been pulled up to idle by the target */\r
+ while (!(BITBANG_PDIDATA_PIN & BITBANG_PDIDATA_MASK) && TimeoutMSRemaining);\r
#endif\r
+\r
+ IsSending = false;\r
}\r
\r
#endif\r
projects / pub / USBasp.git / blobdiff