/*---------------------------------------------------------------------------------------------------------------------------------------------------\r
* @file irsnd.c\r
*\r
- * Copyright (c) 2010 Frank Meyer - frank(at)fli4l.de\r
+ * Copyright (c) 2010-2011 Frank Meyer - frank(at)fli4l.de\r
*\r
- * $Id: irsnd.c,v 1.29 2011/01/18 13:02:15 fm Exp $\r
+ * $Id: irsnd.c,v 1.36 2011/04/20 09:09:48 fm Exp $\r
*\r
* This program is free software; you can redistribute it and/or modify\r
* it under the terms of the GNU General Public License as published by\r
#include <string.h>\r
\r
#define F_CPU 8000000L\r
-typedef unsigned char uint8_t;\r
-typedef unsigned short uint16_t;\r
+typedef unsigned char uint8_t;\r
+typedef unsigned short uint16_t;\r
#define DEBUG\r
\r
#else\r
#include "irsndconfig.h"\r
#include "irsnd.h"\r
\r
+/*---------------------------------------------------------------------------------------------------------------------------------------------------\r
+ * ATmega pin definition of OC2 / OC2A / OC2B\r
+ *---------------------------------------------------------------------------------------------------------------------------------------------------\r
+ */\r
+#if defined (__AVR_ATmega8__) // ATmega8 uses OC2 = PB3\r
+#undef IRSND_OC2 // has no OC2A / OC2B\r
+#define IRSND_OC2 0 // magic: use OC2\r
+#define IRSND_PORT PORTB // port B\r
+#define IRSND_DDR DDRB // ddr B\r
+#define IRSND_BIT 3 // OC2A\r
+\r
+#elif defined (__AVR_ATmega16__) \\r
+ || defined (__AVR_ATmega32__) // ATmega16|32 uses OC2 = PD7\r
+#undef IRSND_OC2 // has no OC2A / OC2B\r
+#define IRSND_OC2 0 // magic: use OC2\r
+#define IRSND_PORT PORTD // port D\r
+#define IRSND_DDR DDRD // ddr D\r
+#define IRSND_BIT 7 // OC2\r
+\r
+#elif defined (__AVR_ATmega162__) // ATmega162 uses OC2 = PB1\r
+#undef IRSND_OC2 // has no OC2A / OC2B\r
+#define IRSND_OC2 0 // magic: use OC2\r
+#define IRSND_PORT PORTB // port B\r
+#define IRSND_DDR DDRB // ddr B\r
+#define IRSND_BIT 1 // OC2\r
+\r
+#elif defined (__AVR_ATmega164__) \\r
+ || defined (__AVR_ATmega324__) \\r
+ || defined (__AVR_ATmega644__) \\r
+ || defined (__AVR_ATmega644P__) \\r
+ || defined (__AVR_ATmega1284__) // ATmega164|324|644|644P|1284 uses OC2A = PD7 or OC2B = PD6\r
+#if IRSND_OC2 == 1 // OC2A\r
+#define IRSND_PORT PORTD // port D\r
+#define IRSND_DDR DDRD // ddr D\r
+#define IRSND_BIT 7 // OC2A\r
+#elif IRSND_OC2 == 2 // OC2B\r
+#define IRSND_PORT PORTD // port D\r
+#define IRSND_DDR DDRD // ddr D\r
+#define IRSND_BIT 6 // OC2B\r
+#else\r
+#error Wrong value for IRSND_OC2, choose 1 or 2 in irsndconfig.h\r
+#endif // IRSND_OC2\r
+\r
+#elif defined (__AVR_ATmega48__) \\r
+ || defined (__AVR_ATmega88__) \\r
+ || defined (__AVR_ATmega168__) \\r
+ || defined (__AVR_ATmega168__) \\r
+ || defined (__AVR_ATmega328__) \\r
+ || defined (__AVR_ATmega328P__) // ATmega48|88|168|328P uses OC2A = PB3 or OC2B = PD3\r
+#if IRSND_OC2 == 1 // OC2A\r
+#define IRSND_PORT PORTB // port B\r
+#define IRSND_DDR DDRB // ddr B\r
+#define IRSND_BIT 3 // OC2A\r
+#elif IRSND_OC2 == 2 // OC2B\r
+#define IRSND_PORT PORTD // port D\r
+#define IRSND_DDR DDRD // ddr D\r
+#define IRSND_BIT 3 // OC2B\r
+#else\r
+#error Wrong value for IRSND_OC2, choose 1 or 2 in irsndconfig.h\r
+#endif // IRSND_OC2\r
+\r
+#else\r
+#if !defined (unix) && !defined (WIN32)\r
+#error OC2A/OC2B not defined, please fill in definitions here.\r
+#endif // unix, WIN32\r
+#endif // __AVR...\r
+\r
#if IRSND_SUPPORT_NIKON_PROTOCOL == 1\r
typedef uint16_t IRSND_PAUSE_LEN;\r
#else\r
typedef uint8_t IRSND_PAUSE_LEN;\r
#endif\r
\r
+/*---------------------------------------------------------------------------------------------------------------------------------------------------\r
+ * IR timings\r
+ *---------------------------------------------------------------------------------------------------------------------------------------------------\r
+ */\r
#define SIRCS_START_BIT_PULSE_LEN (uint8_t)(F_INTERRUPTS * SIRCS_START_BIT_PULSE_TIME + 0.5)\r
#define SIRCS_START_BIT_PAUSE_LEN (uint8_t)(F_INTERRUPTS * SIRCS_START_BIT_PAUSE_TIME + 0.5)\r
#define SIRCS_1_PULSE_LEN (uint8_t)(F_INTERRUPTS * SIRCS_1_PULSE_TIME + 0.5)\r
#define BANG_OLUFSEN_TRAILER_BIT_PAUSE_LEN (uint8_t)(F_INTERRUPTS * BANG_OLUFSEN_TRAILER_BIT_PAUSE_TIME + 0.5)\r
#define BANG_OLUFSEN_FRAME_REPEAT_PAUSE_LEN (uint16_t)(F_INTERRUPTS * BANG_OLUFSEN_FRAME_REPEAT_PAUSE_TIME + 0.5) // use uint16_t!\r
\r
-#define GRUNDIG_OR_NOKIA_PRE_PAUSE_LEN (uint8_t)(F_INTERRUPTS * GRUNDIG_OR_NOKIA_PRE_PAUSE_TIME + 0.5)\r
-#define GRUNDIG_OR_NOKIA_BIT_LEN (uint8_t)(F_INTERRUPTS * GRUNDIG_OR_NOKIA_BIT_TIME + 0.5)\r
+#define GRUNDIG_NOKIA_IR60_PRE_PAUSE_LEN (uint8_t)(F_INTERRUPTS * GRUNDIG_NOKIA_IR60_PRE_PAUSE_TIME + 0.5)\r
+#define GRUNDIG_NOKIA_IR60_BIT_LEN (uint8_t)(F_INTERRUPTS * GRUNDIG_NOKIA_IR60_BIT_TIME + 0.5)\r
#define GRUNDIG_AUTO_REPETITION_PAUSE_LEN (uint16_t)(F_INTERRUPTS * GRUNDIG_AUTO_REPETITION_PAUSE_TIME + 0.5) // use uint16_t!\r
#define NOKIA_AUTO_REPETITION_PAUSE_LEN (uint16_t)(F_INTERRUPTS * NOKIA_AUTO_REPETITION_PAUSE_TIME + 0.5) // use uint16_t!\r
-#define GRUNDIG_OR_NOKIA_FRAME_REPEAT_PAUSE_LEN (uint16_t)(F_INTERRUPTS * GRUNDIG_OR_NOKIA_FRAME_REPEAT_PAUSE_TIME + 0.5) // use uint16_t!\r
+#define GRUNDIG_NOKIA_IR60_FRAME_REPEAT_PAUSE_LEN (uint16_t)(F_INTERRUPTS * GRUNDIG_NOKIA_IR60_FRAME_REPEAT_PAUSE_TIME + 0.5) // use uint16_t!\r
\r
-#define SIEMENS_START_BIT_LEN (uint8_t)(F_INTERRUPTS * SIEMENS_BIT_TIME + 0.5)\r
-#define SIEMENS_BIT_LEN (uint8_t)(F_INTERRUPTS * SIEMENS_BIT_TIME + 0.5)\r
-#define SIEMENS_FRAME_REPEAT_PAUSE_LEN (uint16_t)(F_INTERRUPTS * SIEMENS_FRAME_REPEAT_PAUSE_TIME + 0.5) // use uint16_t!\r
+#define SIEMENS_START_BIT_LEN (uint8_t)(F_INTERRUPTS * SIEMENS_OR_RUWIDO_START_BIT_PULSE_TIME + 0.5)\r
+#define SIEMENS_BIT_LEN (uint8_t)(F_INTERRUPTS * SIEMENS_OR_RUWIDO_BIT_PULSE_TIME + 0.5)\r
+#define SIEMENS_FRAME_REPEAT_PAUSE_LEN (uint16_t)(F_INTERRUPTS * SIEMENS_OR_RUWIDO_FRAME_REPEAT_PAUSE_TIME + 0.5) // use uint16_t!\r
\r
#define IRSND_FREQ_32_KHZ (uint8_t) ((F_CPU / 32000 / 2) - 1)\r
#define IRSND_FREQ_36_KHZ (uint8_t) ((F_CPU / 36000 / 2) - 1)\r
#define NIKON_PULSE_LEN (uint8_t)(F_INTERRUPTS * NIKON_PULSE_TIME + 0.5)\r
#define NIKON_1_PAUSE_LEN (uint8_t)(F_INTERRUPTS * NIKON_1_PAUSE_TIME + 0.5)\r
#define NIKON_0_PAUSE_LEN (uint8_t)(F_INTERRUPTS * NIKON_0_PAUSE_TIME + 0.5)\r
-#define NIKON_FRAME_REPEAT_PAUSE_LEN (uint16_t)(F_INTERRUPTS * NIKON_FRAME_REPEAT_PAUSE_TIME + 0.5) // use uint16_t!\r
+#define NIKON_FRAME_REPEAT_PAUSE_LEN (uint16_t)(F_INTERRUPTS * NIKON_FRAME_REPEAT_PAUSE_TIME + 0.5) // use uint16_t!\r
+\r
+#define LEGO_START_BIT_PULSE_LEN (uint8_t)(F_INTERRUPTS * LEGO_START_BIT_PULSE_TIME + 0.5)\r
+#define LEGO_START_BIT_PAUSE_LEN (uint8_t)(F_INTERRUPTS * LEGO_START_BIT_PAUSE_TIME + 0.5)\r
+#define LEGO_REPEAT_START_BIT_PAUSE_LEN (uint8_t)(F_INTERRUPTS * LEGO_REPEAT_START_BIT_PAUSE_TIME + 0.5)\r
+#define LEGO_PULSE_LEN (uint8_t)(F_INTERRUPTS * LEGO_PULSE_TIME + 0.5)\r
+#define LEGO_1_PAUSE_LEN (uint8_t)(F_INTERRUPTS * LEGO_1_PAUSE_TIME + 0.5)\r
+#define LEGO_0_PAUSE_LEN (uint8_t)(F_INTERRUPTS * LEGO_0_PAUSE_TIME + 0.5)\r
+#define LEGO_FRAME_REPEAT_PAUSE_LEN (uint16_t)(F_INTERRUPTS * LEGO_FRAME_REPEAT_PAUSE_TIME + 0.5) // use uint16_t!\r
\r
static volatile uint8_t irsnd_busy;\r
static volatile uint8_t irsnd_protocol;\r
static volatile uint8_t irsnd_repeat;\r
static volatile uint8_t irsnd_is_on = FALSE;\r
\r
+#if IRSND_USE_CALLBACK == 1\r
+static void (*irsnd_callback_ptr) (uint8_t);\r
+#endif // IRSND_USE_CALLBACK == 1\r
+\r
/*---------------------------------------------------------------------------------------------------------------------------------------------------\r
* Switch PWM on\r
* @details Switches PWM on with a narrow spike on all 3 channels -> leds glowing\r
if (! irsnd_is_on)\r
{\r
#ifndef DEBUG\r
-#if defined (__AVR_ATmega32__)\r
- TCCR2 |= (1<<COM20)|(1<<WGM21); // = 0x42: toggle OC2A on compare match, clear Timer 2 at compare match OCR2A\r
-#else\r
- TCCR2A |= (1<<COM2A0)|(1<<WGM21); // = 0x42: toggle OC2A on compare match, clear Timer 2 at compare match OCR2A\r
-#endif // __AVR...\r
+#if IRSND_OC2 == 0 // use OC2\r
+ TCCR2 |= (1<<COM20)|(1<<WGM21); // toggle OC2 on compare match, clear Timer 2 at compare match OCR2\r
+#elif IRSND_OC2 == 1 // use OC2A\r
+ TCCR2A |= (1<<COM2A0)|(1<<WGM21); // toggle OC2A on compare match, clear Timer 2 at compare match OCR2A\r
+#else // use OC2B\r
+ TCCR2A |= (1<<COM2B0)|(1<<WGM21); // toggle OC2B on compare match, clear Timer 2 at compare match OCR2A (yes: A, not B!)\r
+#endif // IRSND_OC2\r
#endif // DEBUG\r
+\r
+#if IRSND_USE_CALLBACK == 1\r
+ if (irsnd_callback_ptr)\r
+ {\r
+ (*irsnd_callback_ptr) (TRUE);\r
+ }\r
+#endif // IRSND_USE_CALLBACK == 1\r
+\r
irsnd_is_on = TRUE;\r
}\r
}\r
if (irsnd_is_on)\r
{\r
#ifndef DEBUG\r
-#if defined (__AVR_ATmega32__)\r
- TCCR2 &= ~(1<<COM20); // normal port operation, OC2A disconnected.\r
-#else\r
- TCCR2A &= ~(1<<COM2A0); // normal port operation, OC2A disconnected.\r
-#endif // __AVR...\r
- IRSND_PORT &= ~(1<<IRSND_BIT); // set IRSND_BIT to low\r
+#if IRSND_OC2 == 0 // use OC2\r
+ TCCR2 &= ~(1<<COM20); // normal port operation, OC2 disconnected.\r
+#elif IRSND_OC2 == 1 // use OC2A\r
+ TCCR2A &= ~(1<<COM2A0); // normal port operation, OC2A disconnected.\r
+#else // use OC2B\r
+ TCCR2A &= ~(1<<COM2B0); // normal port operation, OC2B disconnected.\r
+#endif // IRSND_OC2\r
+ IRSND_PORT &= ~(1<<IRSND_BIT); // set IRSND_BIT to low\r
#endif // DEBUG\r
+\r
+#if IRSND_USE_CALLBACK == 1\r
+ if (irsnd_callback_ptr)\r
+ {\r
+ (*irsnd_callback_ptr) (FALSE);\r
+ }\r
+#endif // IRSND_USE_CALLBACK == 1\r
+\r
irsnd_is_on = FALSE;\r
}\r
}\r
irsnd_set_freq (uint8_t freq)\r
{\r
#ifndef DEBUG\r
-#if defined (__AVR_ATmega32__)\r
- OCR2 = freq;\r
+#if IRSND_OC2 == 0\r
+ OCR2 = freq; // use register OCR2 for OC2\r
#else\r
- OCR2A = freq;\r
-#endif // __AVR...\r
+ OCR2A = freq; // use register OCR2A for OC2A and OC2B!\r
+#endif\r
#endif // DEBUG\r
}\r
\r
#endif // DEBUG\r
}\r
\r
+#if IRSND_USE_CALLBACK == 1\r
+void\r
+irsnd_set_callback_ptr (void (*cb)(uint8_t))\r
+{\r
+ irsnd_callback_ptr = cb;\r
+}\r
+#endif // IRSND_USE_CALLBACK == 1\r
+\r
uint8_t\r
irsnd_is_busy (void)\r
{\r
irsnd_busy = TRUE;\r
break;\r
}\r
+#endif\r
+#if IRSND_SUPPORT_LEGO_PROTOCOL == 1\r
+ case IRMP_LEGO_PROTOCOL:\r
+ {\r
+ uint8_t crc = 0x0F ^ ((irmp_data_p->command & 0x0F00) >> 8) ^ ((irmp_data_p->command & 0x00F0) >> 4) ^ (irmp_data_p->command & 0x000F);\r
+\r
+ irsnd_buffer[0] = (irmp_data_p->command & 0x0FF0) >> 4; // CCCCCCCC\r
+ irsnd_buffer[1] = ((irmp_data_p->command & 0x000F) << 4) | crc; // CCCCcccc\r
+\r
+ irsnd_protocol = IRMP_LEGO_PROTOCOL;\r
+ irsnd_busy = TRUE;\r
+ break;\r
+ }\r
#endif\r
default:\r
{\r
#if IRSND_SUPPORT_GRUNDIG_PROTOCOL == 1\r
case IRMP_GRUNDIG_PROTOCOL:\r
{\r
- startbit_pulse_len = GRUNDIG_OR_NOKIA_BIT_LEN;\r
- startbit_pause_len = GRUNDIG_OR_NOKIA_PRE_PAUSE_LEN - 1;\r
- pulse_len = GRUNDIG_OR_NOKIA_BIT_LEN;\r
- pause_len = GRUNDIG_OR_NOKIA_BIT_LEN;\r
- has_stop_bit = GRUNDIG_OR_NOKIA_STOP_BIT;\r
+ startbit_pulse_len = GRUNDIG_NOKIA_IR60_BIT_LEN;\r
+ startbit_pause_len = GRUNDIG_NOKIA_IR60_PRE_PAUSE_LEN - 1;\r
+ pulse_len = GRUNDIG_NOKIA_IR60_BIT_LEN;\r
+ pause_len = GRUNDIG_NOKIA_IR60_BIT_LEN;\r
+ has_stop_bit = GRUNDIG_NOKIA_IR60_STOP_BIT;\r
complete_data_len = GRUNDIG_COMPLETE_DATA_LEN;\r
n_auto_repetitions = GRUNDIG_FRAMES; // 2 frames\r
auto_repetition_pause_len = GRUNDIG_AUTO_REPETITION_PAUSE_LEN; // 20m sec pause\r
- repeat_frame_pause_len = GRUNDIG_OR_NOKIA_FRAME_REPEAT_PAUSE_LEN; // 117 msec pause\r
+ repeat_frame_pause_len = GRUNDIG_NOKIA_IR60_FRAME_REPEAT_PAUSE_LEN; // 117 msec pause\r
irsnd_set_freq (IRSND_FREQ_38_KHZ);\r
\r
break;\r
#if IRSND_SUPPORT_NOKIA_PROTOCOL == 1\r
case IRMP_NOKIA_PROTOCOL:\r
{\r
- startbit_pulse_len = GRUNDIG_OR_NOKIA_BIT_LEN;\r
- startbit_pause_len = GRUNDIG_OR_NOKIA_PRE_PAUSE_LEN - 1;\r
- pulse_len = GRUNDIG_OR_NOKIA_BIT_LEN;\r
- pause_len = GRUNDIG_OR_NOKIA_BIT_LEN;\r
- has_stop_bit = GRUNDIG_OR_NOKIA_STOP_BIT;\r
+ startbit_pulse_len = GRUNDIG_NOKIA_IR60_BIT_LEN;\r
+ startbit_pause_len = GRUNDIG_NOKIA_IR60_PRE_PAUSE_LEN - 1;\r
+ pulse_len = GRUNDIG_NOKIA_IR60_BIT_LEN;\r
+ pause_len = GRUNDIG_NOKIA_IR60_BIT_LEN;\r
+ has_stop_bit = GRUNDIG_NOKIA_IR60_STOP_BIT;\r
complete_data_len = NOKIA_COMPLETE_DATA_LEN;\r
- n_auto_repetitions = NOKIA_FRAMES; // 2 frames\r
- auto_repetition_pause_len = NOKIA_AUTO_REPETITION_PAUSE_LEN; // 20 msec pause\r
- repeat_frame_pause_len = GRUNDIG_OR_NOKIA_FRAME_REPEAT_PAUSE_LEN; // 117 msec pause\r
+ n_auto_repetitions = NOKIA_FRAMES; // 2 frames\r
+ auto_repetition_pause_len = NOKIA_AUTO_REPETITION_PAUSE_LEN; // 20 msec pause\r
+ repeat_frame_pause_len = GRUNDIG_NOKIA_IR60_FRAME_REPEAT_PAUSE_LEN; // 117 msec pause\r
irsnd_set_freq (IRSND_FREQ_38_KHZ);\r
break;\r
}\r
startbit_pause_len = SIEMENS_BIT_LEN;\r
pulse_len = SIEMENS_BIT_LEN;\r
pause_len = SIEMENS_BIT_LEN;\r
- has_stop_bit = SIEMENS_STOP_BIT;\r
+ has_stop_bit = SIEMENS_OR_RUWIDO_STOP_BIT;\r
complete_data_len = SIEMENS_COMPLETE_DATA_LEN - 1;\r
n_auto_repetitions = 1; // 1 frame\r
auto_repetition_pause_len = 0;\r
break;\r
}\r
#endif\r
+#if IRSND_SUPPORT_LEGO_PROTOCOL == 1\r
+ case IRMP_LEGO_PROTOCOL:\r
+ {\r
+ startbit_pulse_len = LEGO_START_BIT_PULSE_LEN;\r
+ startbit_pause_len = LEGO_START_BIT_PAUSE_LEN - 1;\r
+ complete_data_len = LEGO_COMPLETE_DATA_LEN;\r
+ pulse_1_len = LEGO_PULSE_LEN;\r
+ pause_1_len = LEGO_1_PAUSE_LEN - 1;\r
+ pulse_0_len = LEGO_PULSE_LEN;\r
+ pause_0_len = LEGO_0_PAUSE_LEN - 1;\r
+ has_stop_bit = LEGO_STOP_BIT;\r
+ n_auto_repetitions = 1; // 1 frame\r
+ auto_repetition_pause_len = 0;\r
+ repeat_frame_pause_len = LEGO_FRAME_REPEAT_PAUSE_LEN;\r
+ irsnd_set_freq (IRSND_FREQ_38_KHZ);\r
+ break;\r
+ }\r
+#endif\r
default:\r
{\r
irsnd_busy = FALSE;\r
#if IRSND_SUPPORT_NIKON_PROTOCOL == 1\r
case IRMP_NIKON_PROTOCOL:\r
#endif\r
+#if IRSND_SUPPORT_LEGO_PROTOCOL == 1\r
+ case IRMP_LEGO_PROTOCOL:\r
+#endif\r
\r
\r
#if IRSND_SUPPORT_SIRCS_PROTOCOL == 1 || IRSND_SUPPORT_NEC_PROTOCOL == 1 || IRSND_SUPPORT_SAMSUNG_PROTOCOL == 1 || IRSND_SUPPORT_MATSUSHITA_PROTOCOL == 1 || \\r
IRSND_SUPPORT_KASEIKYO_PROTOCOL == 1 || IRSND_SUPPORT_RECS80_PROTOCOL == 1 || IRSND_SUPPORT_RECS80EXT_PROTOCOL == 1 || IRSND_SUPPORT_DENON_PROTOCOL == 1 || \\r
IRSND_SUPPORT_NUBERT_PROTOCOL == 1 || IRSND_SUPPORT_BANG_OLUFSEN_PROTOCOL == 1 || IRSND_SUPPORT_FDC_PROTOCOL == 1 || IRSND_SUPPORT_RCCAR_PROTOCOL == 1 || \\r
- IRSND_SUPPORT_JVC_PROTOCOL == 1 || IRSND_SUPPORT_NIKON_PROTOCOL == 1\r
+ IRSND_SUPPORT_JVC_PROTOCOL == 1 || IRSND_SUPPORT_NIKON_PROTOCOL == 1 || IRSND_SUPPORT_LEGO_PROTOCOL == 1 \r
{\r
if (pulse_counter == 0)\r
{\r
\r
if (repeat_counter > 0)\r
{ // set 117 msec pause time\r
- auto_repetition_pause_len = GRUNDIG_OR_NOKIA_FRAME_REPEAT_PAUSE_LEN;\r
+ auto_repetition_pause_len = GRUNDIG_NOKIA_IR60_FRAME_REPEAT_PAUSE_LEN;\r
}\r
\r
if (repeat_counter < n_repeat_frames) // tricky: repeat n info frames per auto repetition before sending last stop frame\r
}\r
else // send n'th bit\r
{\r
- pulse_len = GRUNDIG_OR_NOKIA_BIT_LEN;\r
- pause_len = GRUNDIG_OR_NOKIA_BIT_LEN;\r
+ pulse_len = GRUNDIG_NOKIA_IR60_BIT_LEN;\r
+ pause_len = GRUNDIG_NOKIA_IR60_BIT_LEN;\r
first_pulse = (irsnd_buffer[current_bit / 8] & (1<<(7-(current_bit % 8)))) ? TRUE : FALSE;\r
}\r
}\r
projects / irmp.git / blobdiff