diff options
Diffstat (limited to 'ArduinoAddons/Arduino_1.5.x/hardware/marlin/avr/libraries/U8glib/utility/u8g_com_atmega_parallel.c')
| -rwxr-xr-x | ArduinoAddons/Arduino_1.5.x/hardware/marlin/avr/libraries/U8glib/utility/u8g_com_atmega_parallel.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/ArduinoAddons/Arduino_1.5.x/hardware/marlin/avr/libraries/U8glib/utility/u8g_com_atmega_parallel.c b/ArduinoAddons/Arduino_1.5.x/hardware/marlin/avr/libraries/U8glib/utility/u8g_com_atmega_parallel.c new file mode 100755 index 000000000..603082da2 --- /dev/null +++ b/ArduinoAddons/Arduino_1.5.x/hardware/marlin/avr/libraries/U8glib/utility/u8g_com_atmega_parallel.c @@ -0,0 +1,183 @@ +/* + + u8g_atmega_parallel.c + + Universal 8bit Graphics Library + + Copyright (c) 2012, olikraus@gmail.com + All rights reserved. + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright notice, this list + of conditions and the following disclaimer. + + * Redistributions in binary form must reproduce the above copyright notice, this + list of conditions and the following disclaimer in the documentation and/or other + materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR + CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + + PIN_D0 8 + PIN_D1 9 + PIN_D2 10 + PIN_D3 11 + PIN_D4 4 + PIN_D5 5 + PIN_D6 6 + PIN_D7 7 + + PIN_CS1 14 + PIN_CS2 15 + PIN_RW 16 + PIN_DI 17 + PIN_EN 18 + + u8g_Init8Bit(u8g, dev, d0, d1, d2, d3, d4, d5, d6, d7, en, cs1, cs2, di, rw, reset) + u8g_Init8Bit(u8g, dev, 8, 9, 10, 11, 4, 5, 6, 7, 18, 14, 15, 17, 16, U8G_PIN_NONE) + +*/ + +#include "u8g.h" + +#if defined(__AVR__) + +static void u8g_com_atmega_parallel_write(u8g_t *u8g, uint8_t val) U8G_NOINLINE; +static void u8g_com_atmega_parallel_write(u8g_t *u8g, uint8_t val) +{ + + u8g_SetPILevel(u8g, U8G_PI_D0, val&1); + val >>= 1; + u8g_SetPILevel(u8g, U8G_PI_D1, val&1); + val >>= 1; + u8g_SetPILevel(u8g, U8G_PI_D2, val&1); + val >>= 1; + u8g_SetPILevel(u8g, U8G_PI_D3, val&1); + val >>= 1; + u8g_SetPILevel(u8g, U8G_PI_D4, val&1); + val >>= 1; + u8g_SetPILevel(u8g, U8G_PI_D5, val&1); + val >>= 1; + u8g_SetPILevel(u8g, U8G_PI_D6, val&1); + val >>= 1; + u8g_SetPILevel(u8g, U8G_PI_D7, val&1); + + /* EN cycle time must be 1 micro second */ + u8g_SetPILevel(u8g, U8G_PI_EN, 1); + u8g_MicroDelay(); /* delay by 1000ns, reference: ST7920: 140ns, SBN1661: 100ns */ + u8g_SetPILevel(u8g, U8G_PI_EN, 0); + u8g_10MicroDelay(); /* ST7920 commands: 72us */ + u8g_10MicroDelay(); /* ST7920 commands: 72us */ +} + + +uint8_t u8g_com_atmega_parallel_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr) +{ + switch(msg) + { + case U8G_COM_MSG_INIT: + /* setup the RW pin as output and force it to low */ + u8g_SetPIOutput(u8g, U8G_PI_RW); + u8g_SetPILevel(u8g, U8G_PI_RW, 0); + + u8g_SetPIOutput(u8g, U8G_PI_D0); + u8g_SetPIOutput(u8g, U8G_PI_D1); + u8g_SetPIOutput(u8g, U8G_PI_D2); + u8g_SetPIOutput(u8g, U8G_PI_D3); + u8g_SetPIOutput(u8g, U8G_PI_D4); + u8g_SetPIOutput(u8g, U8G_PI_D5); + u8g_SetPIOutput(u8g, U8G_PI_D6); + u8g_SetPIOutput(u8g, U8G_PI_D7); + u8g_SetPIOutput(u8g, U8G_PI_EN); + u8g_SetPIOutput(u8g, U8G_PI_CS1); + u8g_SetPIOutput(u8g, U8G_PI_CS2); + u8g_SetPIOutput(u8g, U8G_PI_DI); + u8g_SetPILevel(u8g, U8G_PI_CS1, 1); + u8g_SetPILevel(u8g, U8G_PI_CS2, 1); + + break; + case U8G_COM_MSG_STOP: + break; + case U8G_COM_MSG_CHIP_SELECT: + if ( arg_val == 0 ) + { + /* disable */ + u8g_SetPILevel(u8g, U8G_PI_CS1, 1); + u8g_SetPILevel(u8g, U8G_PI_CS2, 1); + } + else if ( arg_val == 1 ) + { + /* enable */ + u8g_SetPILevel(u8g, U8G_PI_CS1, 0); + u8g_SetPILevel(u8g, U8G_PI_CS2, 1); + } + else if ( arg_val == 2 ) + { + /* enable */ + u8g_SetPILevel(u8g, U8G_PI_CS1, 1); + u8g_SetPILevel(u8g, U8G_PI_CS2, 0); + } + else + { + /* enable */ + u8g_SetPILevel(u8g, U8G_PI_CS1, 0); + u8g_SetPILevel(u8g, U8G_PI_CS2, 0); + } + break; + case U8G_COM_MSG_WRITE_BYTE: + u8g_com_atmega_parallel_write(u8g, arg_val); + break; + case U8G_COM_MSG_WRITE_SEQ: + { + register uint8_t *ptr = arg_ptr; + while( arg_val > 0 ) + { + u8g_com_atmega_parallel_write(u8g, *ptr++); + arg_val--; + } + } + break; + case U8G_COM_MSG_WRITE_SEQ_P: + { + register uint8_t *ptr = arg_ptr; + while( arg_val > 0 ) + { + u8g_com_atmega_parallel_write(u8g, u8g_pgm_read(ptr)); + ptr++; + arg_val--; + } + } + break; + case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */ + u8g_SetPILevel(u8g, U8G_PI_DI, arg_val); + break; + case U8G_COM_MSG_RESET: + u8g_SetPILevel(u8g, U8G_PI_RESET, arg_val); + break; + } + return 1; +} + +#else + +uint8_t u8g_com_atmega_parallel_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr) +{ + return 1; +} + +#endif /* ARDUINO */ + |