diff options
Diffstat (limited to 'ArduinoAddons/Arduino_1.0.x/libraries/U8glib/utility/u8g_com_arduino_t6963.c')
| -rwxr-xr-x | ArduinoAddons/Arduino_1.0.x/libraries/U8glib/utility/u8g_com_arduino_t6963.c | 403 |
1 files changed, 403 insertions, 0 deletions
diff --git a/ArduinoAddons/Arduino_1.0.x/libraries/U8glib/utility/u8g_com_arduino_t6963.c b/ArduinoAddons/Arduino_1.0.x/libraries/U8glib/utility/u8g_com_arduino_t6963.c new file mode 100755 index 000000000..50e5e93ac --- /dev/null +++ b/ArduinoAddons/Arduino_1.0.x/libraries/U8glib/utility/u8g_com_arduino_t6963.c @@ -0,0 +1,403 @@ +/* + + u8g_com_arduino_t6963.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. + + + 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_CS 14 + PIN_A0 15 + PIN_RESET 16 + PIN_WR 17 + PIN_RD 18 + + u8g_InitRW8Bit(u8g, dev, d0, d1, d2, d3, d4, d5, d6, d7, cs, a0, wr, rd, reset) + u8g_InitRW8Bit(u8g, dev, 8, 9, 10, 11, 4, 5, 6, 7, 14, 15, 17, 18, 16) + + 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(ARDUINO) + +#if ARDUINO < 100 +//#include <WProgram.h> +#include <wiring_private.h> +#include <pins_arduino.h> +#else +#include <Arduino.h> +#endif + + +#if defined(__PIC32MX) +/* CHIPKIT PIC32 */ +static volatile uint32_t *u8g_output_data_port[8]; +static volatile uint32_t *u8g_input_data_port[8]; +static volatile uint32_t *u8g_mode_port[8]; +static uint32_t u8g_data_mask[8]; +#else +static volatile uint8_t *u8g_output_data_port[8]; +static volatile uint8_t *u8g_input_data_port[8]; +static volatile uint8_t *u8g_mode_port[8]; +static uint8_t u8g_data_mask[8]; +#endif + + + +static void u8g_com_arduino_t6963_init(u8g_t *u8g) +{ + u8g_output_data_port[0] = portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D0])); + u8g_input_data_port[0] = portInputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D0])); + u8g_mode_port[0] = portModeRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D0])); + u8g_data_mask[0] = digitalPinToBitMask(u8g->pin_list[U8G_PI_D0]); + + u8g_output_data_port[1] = portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D1])); + u8g_input_data_port[1] = portInputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D1])); + u8g_mode_port[1] = portModeRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D1])); + u8g_data_mask[1] = digitalPinToBitMask(u8g->pin_list[U8G_PI_D1]); + + u8g_output_data_port[2] = portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D2])); + u8g_input_data_port[2] = portInputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D2])); + u8g_mode_port[2] = portModeRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D2])); + u8g_data_mask[2] = digitalPinToBitMask(u8g->pin_list[U8G_PI_D2]); + + u8g_output_data_port[3] = portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D3])); + u8g_input_data_port[3] = portInputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D3])); + u8g_mode_port[3] = portModeRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D3])); + u8g_data_mask[3] = digitalPinToBitMask(u8g->pin_list[U8G_PI_D3]); + + u8g_output_data_port[4] = portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D4])); + u8g_input_data_port[4] = portInputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D4])); + u8g_mode_port[4] = portModeRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D4])); + u8g_data_mask[4] = digitalPinToBitMask(u8g->pin_list[U8G_PI_D4]); + + u8g_output_data_port[5] = portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D5])); + u8g_input_data_port[5] = portInputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D5])); + u8g_mode_port[5] = portModeRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D5])); + u8g_data_mask[5] = digitalPinToBitMask(u8g->pin_list[U8G_PI_D5]); + + u8g_output_data_port[6] = portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D6])); + u8g_input_data_port[6] = portInputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D6])); + u8g_mode_port[6] = portModeRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D6])); + u8g_data_mask[6] = digitalPinToBitMask(u8g->pin_list[U8G_PI_D6]); + + u8g_output_data_port[7] = portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D7])); + u8g_input_data_port[7] = portInputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D7])); + u8g_mode_port[7] = portModeRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D7])); + u8g_data_mask[7] = digitalPinToBitMask(u8g->pin_list[U8G_PI_D7]); +} + + +static void u8g_com_arduino_t6963_write_data_pin(uint8_t pin, uint8_t val) +{ + /* no ATOMIC protection required here, this is done by calling procedure */ + if ( val != 0 ) + *u8g_output_data_port[pin] |= u8g_data_mask[pin]; + else + *u8g_output_data_port[pin] &= ~u8g_data_mask[pin]; +} + +static void u8g_com_arduino_t6963_set_port_output(void) +{ + uint8_t i; + U8G_ATOMIC_START(); + for( i = 0; i < 8; i++ ) + { +#if defined(__PIC32MX) +/* CHIPKIT PIC32 */ + *u8g_mode_port[i] |= u8g_data_mask[i]; +#elif defined(__AVR__) + *u8g_mode_port[i] |= u8g_data_mask[i]; +#else + /* TODO: use generic Arduino API */ + *u8g_mode_port[i] |= u8g_data_mask[i]; +#endif + + } + U8G_ATOMIC_END(); +} + +static void u8g_com_arduino_t6963_set_port_input(void) +{ + uint8_t i; + U8G_ATOMIC_START(); + for( i = 0; i < 8; i++ ) + { +#if defined(__PIC32MX) +/* CHIPKIT PIC32 */ + *u8g_mode_port[i] &= ~u8g_data_mask[i]; +#elif defined(__AVR__) +/* avr */ + *u8g_mode_port[i] &= ~u8g_data_mask[i]; + *u8g_output_data_port[i] &= ~u8g_data_mask[i]; // no pullup +#else + /* TODO: use generic Arduino API */ + *u8g_mode_port[i] &= ~u8g_data_mask[i]; + *u8g_output_data_port[i] &= ~u8g_data_mask[i]; // no pullup +#endif + } + U8G_ATOMIC_END(); +} + + +static void u8g_com_arduino_t6963_write(u8g_t *u8g, uint8_t val) +{ + U8G_ATOMIC_START(); + + u8g_com_arduino_t6963_write_data_pin( 0, val&1 ); + val >>= 1; + u8g_com_arduino_t6963_write_data_pin( 1, val&1 ); + val >>= 1; + u8g_com_arduino_t6963_write_data_pin( 2, val&1 ); + val >>= 1; + u8g_com_arduino_t6963_write_data_pin( 3, val&1 ); + val >>= 1; + + u8g_com_arduino_t6963_write_data_pin( 4, val&1 ); + val >>= 1; + u8g_com_arduino_t6963_write_data_pin( 5, val&1 ); + val >>= 1; + u8g_com_arduino_t6963_write_data_pin( 6, val&1 ); + val >>= 1; + u8g_com_arduino_t6963_write_data_pin( 7, val&1 ); + val >>= 1; + U8G_ATOMIC_END(); + + u8g_com_arduino_digital_write(u8g, U8G_PI_WR, 0); + u8g_MicroDelay(); /* 80ns, reference: t6963 datasheet */ + u8g_com_arduino_digital_write(u8g, U8G_PI_WR, 1); + u8g_MicroDelay(); /* 10ns, reference: t6963 datasheet */ +} + +static uint8_t u8g_com_arduino_t6963_read(u8g_t *u8g) +{ + uint8_t val = 0; + + u8g_com_arduino_digital_write(u8g, U8G_PI_RD, 0); + u8g_MicroDelay(); /* 150ns, reference: t6963 datasheet */ + + U8G_ATOMIC_START(); + /* only read bits 0, 1 and 3 */ + if ( (*u8g_input_data_port[3] & u8g_data_mask[3]) != 0 ) + val++; + val <<= 1; + val <<= 1; + if ( (*u8g_input_data_port[1] & u8g_data_mask[1]) != 0 ) + val++; + val <<= 1; + if ( (*u8g_input_data_port[0] & u8g_data_mask[0]) != 0 ) + val++; + U8G_ATOMIC_END(); + + u8g_com_arduino_digital_write(u8g, U8G_PI_RD, 1); + u8g_MicroDelay(); /* 10ns, reference: t6963 datasheet */ + + return val; +} + +#define U8G_STATUS_TIMEOUT 50 + +static uint8_t u8g_com_arduino_t6963_until_01_ok(u8g_t *u8g) +{ + long x; + + u8g_com_arduino_t6963_set_port_input(); + x = millis(); + x += U8G_STATUS_TIMEOUT; + + for(;;) + { + if ( (u8g_com_arduino_t6963_read(u8g) & 3) == 3 ) + break; + if ( x < millis() ) + return 0; + } + u8g_com_arduino_t6963_set_port_output(); + return 1; +} + +static uint8_t u8g_com_arduino_t6963_until_3_ok(u8g_t *u8g) +{ + long x; + + u8g_com_arduino_t6963_set_port_input(); + x = millis(); + x += U8G_STATUS_TIMEOUT; + + for(;;) + { + if ( (u8g_com_arduino_t6963_read(u8g) & 8) == 8 ) + break; + if ( x < millis() ) + return 0; + } + u8g_com_arduino_t6963_set_port_output(); + return 1; +} + +static uint8_t u8g_com_arduino_t6963_write_cmd(u8g_t *u8g, uint8_t val) +{ + u8g_com_arduino_digital_write(u8g, U8G_PI_A0, 1); + if ( u8g_com_arduino_t6963_until_01_ok(u8g) == 0 ) + return 0; + u8g_com_arduino_digital_write(u8g, U8G_PI_A0, 1); + u8g_com_arduino_t6963_write(u8g, val); + return 1; +} + +static uint8_t u8g_com_arduino_t6963_write_data(u8g_t *u8g, uint8_t val) +{ + u8g_com_arduino_digital_write(u8g, U8G_PI_A0, 1); + if ( u8g_com_arduino_t6963_until_01_ok(u8g) == 0 ) + return 0; + u8g_com_arduino_digital_write(u8g, U8G_PI_A0, 0); + u8g_com_arduino_t6963_write(u8g, val); + return 1; +} + +static uint8_t u8g_com_arduino_t6963_write_auto_data(u8g_t *u8g, uint8_t val) +{ + u8g_com_arduino_digital_write(u8g, U8G_PI_A0, 1); + if ( u8g_com_arduino_t6963_until_3_ok(u8g) == 0 ) + return 0; + u8g_com_arduino_digital_write(u8g, U8G_PI_A0, 0); + u8g_com_arduino_t6963_write(u8g, val); + return 1; +} + + +uint8_t u8g_com_arduino_t6963_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr) +{ + switch(msg) + { + case U8G_COM_MSG_INIT: + u8g->pin_list[U8G_PI_A0_STATE] = 0; + u8g_com_arduino_t6963_init(u8g); + /* setup the RW (equal to WR) pin as output and force it to high */ + if ( u8g->pin_list[U8G_PI_WR] != U8G_PIN_NONE ) + { + pinMode(u8g->pin_list[U8G_PI_WR], OUTPUT); + u8g_com_arduino_digital_write(u8g, U8G_PI_WR, HIGH); + } + /* set all pins (except WR pin) */ + u8g_com_arduino_assign_pin_output_high(u8g); + break; + case U8G_COM_MSG_STOP: + break; + + case U8G_COM_MSG_CHIP_SELECT: + if ( arg_val == 0 ) + { + /* disable, active low chip select */ + 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_WRITE_BYTE: + if ( u8g->pin_list[U8G_PI_A0_STATE] == 0 ) + { + u8g_com_arduino_t6963_write_data(u8g, arg_val); + } + else + { + u8g_com_arduino_t6963_write_cmd(u8g, arg_val); + } + break; + case U8G_COM_MSG_WRITE_SEQ: + { + register uint8_t *ptr = arg_ptr; + u8g_com_arduino_t6963_write_cmd(u8g, 0x0b0); /* auto write */ + while( arg_val > 0 ) + { + if ( u8g_com_arduino_t6963_write_auto_data(u8g, *ptr++) == 0 ) + break; + arg_val--; + } + u8g_com_arduino_t6963_write_cmd(u8g, 0x0b2); /* auto reset */ + } + break; + case U8G_COM_MSG_WRITE_SEQ_P: + { + register uint8_t *ptr = arg_ptr; + u8g_com_arduino_t6963_write_cmd(u8g, 0x0b0); /* auto write */ + while( arg_val > 0 ) + { + if ( u8g_com_arduino_t6963_write_auto_data(u8g, u8g_pgm_read(ptr)) == 0 ) + break; + ptr++; + arg_val--; + } + u8g_com_arduino_t6963_write_cmd(u8g, 0x0b2); /* auto reset */ + } + break; + case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 1) or data mode (arg_val = 0) */ + u8g->pin_list[U8G_PI_A0_STATE] = arg_val; + //u8g_com_arduino_digital_write(u8g, U8G_PI_DI, arg_val); + 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; + + } + return 1; +} + +#else + + +uint8_t u8g_com_arduino_t6963_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr) +{ + return 1; +} + + +#endif /* ARDUINO */ + |