diff options
Diffstat (limited to 'ArduinoAddons/Arduino_1.6.x/hardware/marlin/avr/libraries/U8glib/utility/u8g_com_raspberrypi_hw_spi.c')
-rwxr-xr-x | ArduinoAddons/Arduino_1.6.x/hardware/marlin/avr/libraries/U8glib/utility/u8g_com_raspberrypi_hw_spi.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/ArduinoAddons/Arduino_1.6.x/hardware/marlin/avr/libraries/U8glib/utility/u8g_com_raspberrypi_hw_spi.c b/ArduinoAddons/Arduino_1.6.x/hardware/marlin/avr/libraries/U8glib/utility/u8g_com_raspberrypi_hw_spi.c new file mode 100755 index 000000000..611391f54 --- /dev/null +++ b/ArduinoAddons/Arduino_1.6.x/hardware/marlin/avr/libraries/U8glib/utility/u8g_com_raspberrypi_hw_spi.c @@ -0,0 +1,124 @@ +/* + + u8g_com_raspberrypi_hw_spi.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. + + + Assumes, that + MOSI is at PORTB, Pin 3 + and + SCK is at PORTB, Pin 5 + + Update for ATOMIC operation done (01 Jun 2013) + U8G_ATOMIC_OR(ptr, val) + U8G_ATOMIC_AND(ptr, val) + U8G_ATOMIC_START() + U8G_ATOMIC_END() + + + +*/ + +#include "u8g.h" + + + +#if defined(U8G_RASPBERRY_PI) + +#include <wiringPiSPI.h> +#include <wiringPi.h> +#include <stdio.h> +#include <stdlib.h> +#include <errno.h> + +uint8_t u8g_com_raspberrypi_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr) +{ + switch(msg) + { + case U8G_COM_MSG_STOP: + break; + + case U8G_COM_MSG_INIT: + // check wiringPi setup + if (wiringPiSetup() == -1) + { + printf("wiringPi-Error\n"); + exit(1); + } + + if (wiringPiSPISetup (0, 100000) < 0) + { + printf ("Unable to open SPI device 0: %s\n", strerror (errno)) ; + exit (1) ; + } + + u8g_SetPIOutput(u8g, U8G_PI_RESET); + u8g_SetPIOutput(u8g, U8G_PI_A0); + + break; + + case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */ + u8g_SetPILevel(u8g, U8G_PI_A0, arg_val); + break; + + case U8G_COM_MSG_CHIP_SELECT: + /* Done by the SPI hardware */ + break; + + case U8G_COM_MSG_RESET: + u8g_SetPILevel(u8g, U8G_PI_RESET, arg_val); + break; + + case U8G_COM_MSG_WRITE_BYTE: + wiringPiSPIDataRW (0, &arg_val, 1) ; + break; + + case U8G_COM_MSG_WRITE_SEQ: + wiringPiSPIDataRW (0, arg_ptr, arg_val); + break; + + case U8G_COM_MSG_WRITE_SEQ_P: + wiringPiSPIDataRW (0, arg_ptr, arg_val); + break; + } + return 1; +} + +#else + +uint8_t u8g_com_raspberrypi_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr) +{ + return 1; +} + +#endif + + |