diff options
Diffstat (limited to 'ArduinoAddons/Arduino_1.0.x/libraries/U8glib/utility/u8g_dev_ht1632.c')
| -rwxr-xr-x | ArduinoAddons/Arduino_1.0.x/libraries/U8glib/utility/u8g_dev_ht1632.c | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/ArduinoAddons/Arduino_1.0.x/libraries/U8glib/utility/u8g_dev_ht1632.c b/ArduinoAddons/Arduino_1.0.x/libraries/U8glib/utility/u8g_dev_ht1632.c new file mode 100755 index 000000000..4977793f1 --- /dev/null +++ b/ArduinoAddons/Arduino_1.0.x/libraries/U8glib/utility/u8g_dev_ht1632.c @@ -0,0 +1,281 @@ +/* + + u8g_dev_ht1632.c + + 1-Bit (BW) Driver for HT1632 controller + + Universal 8bit Graphics Library + + Copyright (c) 2013, 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. + + + + U8G_PIN_NONE can be used as argument + + uint8_t u8g_InitSPI(u8g_t *u8g, u8g_dev_t *dev, uint8_t sck, uint8_t mosi, uint8_t cs, uint8_t a0, uint8_t reset) + { + ... + u8g->pin_list[U8G_PI_SCK] = sck; + u8g->pin_list[U8G_PI_MOSI] = mosi; + u8g->pin_list[U8G_PI_CS] = cs; + u8g->pin_list[U8G_PI_A0] = a0; + u8g->pin_list[U8G_PI_RESET] = reset; + +mapping + +#define DATA_PIN --> U8G_PI_MOSI +#define WR_PIN --> U8G_PI_SCK +#define CS_PIN --> U8G_PI_CS + U8G_PI_A0 --> not used + U8G_PI_RESET --> not used + +Usage: + + u8g_InitSPI(&u8g, &u8g_dev_ht1632_24x16, WR_PIN, DATA_IN, CS_PIN, U8G_PIN_NONE, U8G_PIN_NONE) + +*/ + +#include "u8g.h" + +#define WIDTH 24 +#define HEIGHT 16 +#define PAGE_HEIGHT 16 + +/* http://forum.arduino.cc/index.php?topic=168537.0 */ + +#define HT1632_CMD_SYSDIS 0x00 // CMD= 0000-0000-x Turn off oscil +#define HT1632_CMD_SYSON 0x01 // CMD= 0000-0001-x Enable system oscil +#define HT1632_CMD_LEDOFF 0x02 // CMD= 0000-0010-x LED duty cycle gen off +#define HT1632_CMD_LEDON 0x03 // CMD= 0000-0011-x LEDs ON +#define HT1632_CMD_BLOFF 0x08 // CMD= 0000-1000-x Blink OFF +#define HT1632_CMD_BLON 0x09 // CMD= 0000-1001-x Blink On +#define HT1632_CMD_SLVMD 0x10 // CMD= 0001-00xx-x Slave Mode +#define HT1632_CMD_MSTMD 0x14 // CMD= 0001-01xx-x Master Mode +#define HT1632_CMD_RCCLK 0x18 // CMD= 0001-10xx-x Use on-chip clock +#define HT1632_CMD_EXTCLK 0x1C // CMD= 0001-11xx-x Use external clock +#define HT1632_CMD_COMS00 0x20 // CMD= 0010-ABxx-x commons options +#define HT1632_CMD_COMS01 0x24 // CMD= 0010-ABxx-x commons options +#define HT1632_CMD_COMS10 0x28 // CMD= 0010-ABxx-x commons options +#define HT1632_CMD_COMS11 0x2C // P-MOS OUTPUT AND 16COMMON OPTION +#define HT1632_CMD_PWM 0xA0 // CMD= 101x-PPPP-x PWM duty cycle + +#define HT1632_ID_CMD 4 /* ID = 100 - Commands */ +#define HT1632_ID_RD 6 /* ID = 110 - Read RAM */ +#define HT1632_ID_WR 5 /* ID = 101 - Write RAM */ + +#define HT1632_ID_LEN 3 // IDs are 3 bits +#define HT1632_CMD_LEN 8 // CMDs are 8 bits +#define HT1632_DATA_LEN 8 // Data are 4*2 bits +#define HT1632_ADDR_LEN 7 // Address are 7 bits + +#if defined(ARDUINO) + +#if ARDUINO < 100 +#include <WProgram.h> +#else +#include <Arduino.h> +#endif + +//#define WR_PIN 3 +//#define DATA_PIN 2 +//#define CS_PIN 4 + +void ht1632_write_data_MSB(u8g_t *u8g, uint8_t cnt, uint8_t data, uint8_t extra) +{ + int8_t i; + uint8_t data_pin = u8g->pin_list[U8G_PI_MOSI]; + uint8_t wr_pin = u8g->pin_list[U8G_PI_SCK]; + + for(i = cnt - 1; i >= 0; i--) + { + if ((data >> i) & 1) + { + digitalWrite(data_pin, HIGH); + } + else + { + digitalWrite(data_pin, LOW); + } + + digitalWrite(wr_pin, LOW); + u8g_MicroDelay(); + digitalWrite(wr_pin, HIGH); + u8g_MicroDelay(); + } + + // Send an extra bit + if (extra) + { + digitalWrite(data_pin, HIGH); + digitalWrite(wr_pin, LOW); + u8g_MicroDelay(); + digitalWrite(wr_pin, HIGH); + u8g_MicroDelay(); + } +} + +void ht1632_write_data(u8g_t *u8g, uint8_t cnt, uint8_t data) +{ + uint8_t i; + uint8_t data_pin = u8g->pin_list[U8G_PI_MOSI]; + uint8_t wr_pin = u8g->pin_list[U8G_PI_SCK]; + for (i = 0; i < cnt; i++) + { + + if ((data >> i) & 1) { + digitalWrite(data_pin, HIGH); + } + else { + digitalWrite(data_pin, LOW); + } + + digitalWrite(wr_pin, LOW); + u8g_MicroDelay(); + digitalWrite(wr_pin, HIGH); + u8g_MicroDelay(); + } +} + + +void ht1632_init(u8g_t *u8g) +{ + //uint8_t i; + uint8_t data_pin = u8g->pin_list[U8G_PI_MOSI]; + uint8_t wr_pin = u8g->pin_list[U8G_PI_SCK]; + uint8_t cs_pin = u8g->pin_list[U8G_PI_CS]; + pinMode(data_pin, OUTPUT); + pinMode(wr_pin, OUTPUT); + pinMode(cs_pin, OUTPUT); + + digitalWrite(data_pin, HIGH); + digitalWrite(wr_pin, HIGH); + digitalWrite(cs_pin, HIGH); + + digitalWrite(cs_pin, LOW); + /* init display once after startup */ + ht1632_write_data_MSB(u8g, 3, HT1632_ID_CMD, false); // IDs are 3 bits + ht1632_write_data_MSB(u8g, 8, HT1632_CMD_SYSDIS, true); // 8 bits + ht1632_write_data_MSB(u8g, 8, HT1632_CMD_SYSON, true); // 8 bits + ht1632_write_data_MSB(u8g, 8, HT1632_CMD_COMS11, true); // 8 bits + ht1632_write_data_MSB(u8g, 8, HT1632_CMD_LEDON, true); // 8 bits + ht1632_write_data_MSB(u8g, 8, HT1632_CMD_BLOFF, true); // 8 bits + ht1632_write_data_MSB(u8g, 8, HT1632_CMD_PWM+15, true); // 8 bits + digitalWrite(cs_pin, HIGH); + + /* removed following (debug) code */ + /* + digitalWrite(cs_pin, LOW); + ht1632_write_data_MSB(u8g, 3, HT1632_ID_WR, false); // Send "write to display" command + ht1632_write_data_MSB(u8g, 7, 0, false); + for(i = 0; i<48; ++i) + { + ht1632_write_data(u8g, 8, 0xFF); + } + digitalWrite(cs_pin, HIGH); + */ +} + +/* + page: 0=data contain lines 0..16, 1=data contain lines 16..32 (a 24x16 display will only have page 0) + cnt: width of the display + data: pointer to a buffer with 2*cnt bytes. +*/ +void ht1632_transfer_data(u8g_t *u8g, uint8_t page, uint8_t cnt, uint8_t *data) +{ + uint8_t addr; + uint8_t cs_pin = u8g->pin_list[U8G_PI_CS]; + /* send data to the ht1632 */ + digitalWrite(cs_pin, LOW); + ht1632_write_data_MSB(u8g, 3, HT1632_ID_WR, false); // Send "write to display" command + ht1632_write_data_MSB(u8g, 7, page*2*cnt, false); + + // Operating in progressive addressing mode + for (addr = 0; addr < cnt; addr++) + { + ht1632_write_data(u8g, 8, data[addr]); + ht1632_write_data(u8g, 8, data[addr+cnt]); + } + digitalWrite(cs_pin, HIGH); +} + +/* value is between 0...15 */ +void ht1632_set_contrast(u8g_t *u8g, uint8_t value) +{ + uint8_t cs_pin = u8g->pin_list[U8G_PI_CS]; + digitalWrite(cs_pin, LOW); + ht1632_write_data_MSB(u8g, 3, HT1632_ID_CMD, false); + ht1632_write_data_MSB(u8g, 8, HT1632_CMD_PWM + value, false); + digitalWrite(cs_pin, HIGH); +} + +#else +void ht1632_init(u8g_t *u8g) +{ +} + +void ht1632_transfer_data(u8g_t *u8g, uint8_t page, uint8_t cnt, uint8_t *data) +{ +} + +void ht1632_set_contrast(u8g_t *u8g, uint8_t value) +{ +} + +#endif /* ARDUINO */ + + +uint8_t u8g_dev_ht1632_24x16_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, void *arg) +{ + switch(msg) + { + case U8G_DEV_MSG_INIT: + ht1632_init(u8g); + break; + case U8G_DEV_MSG_STOP: + break; + case U8G_DEV_MSG_PAGE_NEXT: + { + u8g_pb_t *pb = (u8g_pb_t *)(dev->dev_mem); + + /* current page: pb->p.page */ + /* ptr to the buffer: pb->buf */ + ht1632_transfer_data(u8g, pb->p.page, WIDTH, pb->buf); + } + break; + case U8G_DEV_MSG_CONTRAST: + /* values passed to SetContrast() are between 0 and 255, scale down to 0...15 */ + ht1632_set_contrast(u8g, (*(uint8_t *)arg) >> 4); + return 1; + } + return u8g_dev_pb16v1_base_fn(u8g, dev, msg, arg); +} + +uint8_t u8g_dev_ht1632_24x16_buf[WIDTH*2] U8G_NOCOMMON ; +u8g_pb_t u8g_dev_ht1632_24x16_pb = { {16, HEIGHT, 0, 0, 0}, WIDTH, u8g_dev_ht1632_24x16_buf}; +u8g_dev_t u8g_dev_ht1632_24x16 = { u8g_dev_ht1632_24x16_fn, &u8g_dev_ht1632_24x16_pb, u8g_com_null_fn }; + |