diff options
Diffstat (limited to 'ArduinoAddons/Arduino_1.6.x/hardware/marlin/avr/libraries/U8glib/utility/u8g_com_arduino_hw_usart_spi.c')
| -rwxr-xr-x | ArduinoAddons/Arduino_1.6.x/hardware/marlin/avr/libraries/U8glib/utility/u8g_com_arduino_hw_usart_spi.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/ArduinoAddons/Arduino_1.6.x/hardware/marlin/avr/libraries/U8glib/utility/u8g_com_arduino_hw_usart_spi.c b/ArduinoAddons/Arduino_1.6.x/hardware/marlin/avr/libraries/U8glib/utility/u8g_com_arduino_hw_usart_spi.c new file mode 100755 index 000000000..27fd8d01c --- /dev/null +++ b/ArduinoAddons/Arduino_1.6.x/hardware/marlin/avr/libraries/U8glib/utility/u8g_com_arduino_hw_usart_spi.c @@ -0,0 +1,159 @@ +/* + + u8g_com_arduino_hw_usart_spi.c + + Universal 8bit Graphics Library + + Copyright (c) 2011, 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. + + SPI Clock Cycle Type + + SSD1351 50ns 20 MHz + SSD1322 300ns 3.3 MHz + SSD1327 300ns + SSD1306 300ns + ST7565 400ns 2.5 MHz + ST7920 400ns + +*/ + +#include "u8g.h" + +#if defined(ARDUINO) + +#if defined(__AVR_ATmega32U4__ ) + +#include <avr/interrupt.h> +#include <avr/io.h> + +#if ARDUINO < 100 +#include <WProgram.h> +#else +#include <Arduino.h> +#endif + + + +static uint8_t u8g_usart_spi_out(uint8_t data) +{ + /* send data */ + UDR1 = data; + /* wait for empty transmit buffer */ + while(!(UCSR1A & (1 << UDRE1))); + + return UDR1; +} + + +uint8_t u8g_com_arduino_hw_usart_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: + /* SCK is already an output as we overwrite TXLED */ + u8g_com_arduino_assign_pin_output_high(u8g); + u8g_com_arduino_digital_write(u8g, U8G_PI_CS, HIGH); + + // Init interface at 2MHz + UBRR1 = 0x00; + UCSR1C = (1 << UMSEL11) | (1 << UMSEL10); + UCSR1B = (1 << TXEN1); + UBRR1 = 3; + + break; + + case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */ + u8g_com_arduino_digital_write(u8g, U8G_PI_A0, arg_val); + break; + + case U8G_COM_MSG_CHIP_SELECT: + if ( arg_val == 0 ) + { + /* disable */ + u8g_com_arduino_digital_write(u8g, U8G_PI_CS, HIGH); + } + else + { + /* enable */ + u8g_com_arduino_digital_write(u8g, U8G_PI_CS, LOW); + } + break; + + case U8G_COM_MSG_RESET: + if ( u8g->pin_list[U8G_PI_RESET] != U8G_PIN_NONE ) + u8g_com_arduino_digital_write(u8g, U8G_PI_RESET, arg_val); + break; + + case U8G_COM_MSG_WRITE_BYTE: + u8g_usart_spi_out(arg_val); + break; + + case U8G_COM_MSG_WRITE_SEQ: + { + register uint8_t *ptr = arg_ptr; + while( arg_val > 0 ) + { + u8g_usart_spi_out(*ptr++); + arg_val--; + } + } + break; + case U8G_COM_MSG_WRITE_SEQ_P: + { + register uint8_t *ptr = arg_ptr; + while( arg_val > 0 ) + { + u8g_usart_spi_out(u8g_pgm_read(ptr)); + ptr++; + arg_val--; + } + } + break; + } + return 1; +} + +/* #elif defined(__18CXX) || defined(__PIC32MX) */ +/* #elif defined(__arm__) // Arduino Due, maybe we should better check for __SAM3X8E__ */ + +#else /* __AVR_ATmega32U4__ */ + +#endif /* __AVR_ATmega32U4__ */ + +#else /* ARDUINO */ + +uint8_t u8g_com_arduino_hw_usart_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr) +{ + return 1; +} + +#endif /* ARDUINO */ + |