Toyomasa Watarai
NXP PCF8576 Universal LCD driver for low multiplex rates + GH08172 LCD library
Dependents: PCF8576_GH08172_test
Revision 0:e62c6477b73b, committed 2016-03-28
- Comitter:
- MACRUM
- Date:
- Mon Mar 28 12:40:44 2016 +0000
- Child:
- 1:427ffdda29a3
- Commit message:
- Initial commit
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/PCF8576.cpp Mon Mar 28 12:40:44 2016 +0000
@@ -0,0 +1,119 @@
+/* Copyright (c) 2016 ARM Ltd., MIT License
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+* and associated documentation files (the "Software"), to deal in the Software without
+* restriction, including without limitation the rights to use, copy, modify, merge, publish,
+* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+* Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all copies or
+* substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*
+*/
+#include "PCF8576.h"
+
+PCF8576::PCF8576(PinName sda, PinName scl, int addr) : m_i2c(sda, scl), m_addr(addr)
+{
+ initialize();
+}
+
+PCF8576::PCF8576(I2C &i2c_obj, int addr) : m_i2c(i2c_obj), m_addr(addr)
+{
+ initialize();
+}
+
+PCF8576::~PCF8576()
+{
+}
+
+void PCF8576::initialize()
+{
+ m_i2c.frequency(200000);
+
+ for(uint32_t i = 0; i < 14; i++) {
+ m_lcd_buf[i] = 0;
+ }
+
+ m_C5_mask = m_C6_mask = 0;
+
+ m_lcd_buf[0] = PCF8576_CMD_MODE_SET
+ | (0x0 << 0) // 1:4 multiplex
+ | (0 << 2) // LCD 1/3 bias
+ | (1 << 3) // enable display
+ | (1 << 7); // another command to follow
+
+ m_lcd_buf[1] = PCF8576_CMD_BINK
+ | (0x0 << 0) // blinking off
+ | (0 << 2) // blink mode normal
+ | (0 << 7); // last command
+
+ m_i2c.write(PCF8576_DEFAULT_SLAVE_ADDRESS, m_lcd_buf, 14);
+
+}
+
+void PCF8576::icon(uint32_t count)
+{
+ if (count & 0x08) {
+ m_C5_mask |= 0x01;
+ m_lcd_buf[11] |= 0x01;
+ } else {
+ m_C5_mask &= ~0x01;
+ m_lcd_buf[11] &= ~0x01;
+ }
+
+ if (count & 0x04) {
+ m_C5_mask |= 0x02;
+ m_lcd_buf[11] |= 0x02;
+ } else {
+ m_C5_mask &= ~0x02;
+ m_lcd_buf[11] &= ~0x02;
+ }
+
+ if (count & 0x02) {
+ m_C6_mask |= 0x01;
+ m_lcd_buf[13] |= 0x01;
+ } else {
+ m_C6_mask &= ~0x01;
+ m_lcd_buf[13] &= ~0x01;
+ }
+
+ if (count & 0x01) {
+ m_C6_mask |= 0x02;
+ m_lcd_buf[13] |= 0x02;
+ } else {
+ m_C6_mask &= ~0x02;
+ m_lcd_buf[13] &= ~0x02;
+ }
+ m_i2c.write(PCF8576_DEFAULT_SLAVE_ADDRESS, m_lcd_buf, 14);
+
+}
+
+
+void PCF8576::print(char *str)
+{
+ uint32_t len = strlen(str);
+ if (len == 0)
+ return;
+ if (len > 6)
+ len = 6;
+
+ m_lcd_buf[0] = PCF8576_CMD_DEVICE_SEL | (1 << 7);
+ m_lcd_buf[1] = PCF8576_CMD_LOAD_DATA;
+
+ for(uint32_t i = 0; i < len; i++) {
+ m_lcd_buf[(i*2) + 2] = (char)(FontMatrix[(*str - ' ')] & 0xFF);
+ m_lcd_buf[(i*2) + 3] = (char)(FontMatrix[(*str - ' ')] >> 8);
+ str++;
+ }
+
+ m_lcd_buf[11] |= m_C5_mask;
+ m_lcd_buf[13] |= m_C6_mask;
+
+ m_i2c.write(PCF8576_DEFAULT_SLAVE_ADDRESS, m_lcd_buf, 2 + (len*2));
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/PCF8576.h Mon Mar 28 12:40:44 2016 +0000
@@ -0,0 +1,112 @@
+/* Copyright (c) 2016 ARM Ltd., MIT License
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+* and associated documentation files (the "Software"), to deal in the Software without
+* restriction, including without limitation the rights to use, copy, modify, merge, publish,
+* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+* Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all copies or
+* substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*
+*
+* PCF8576 Universal LCD driver library
+*
+* @author Toyomasa Watarai
+* @version 1.0
+* @date 28-March-2016
+*
+* Library for "PCF8576 Universal LCD driver for low multiplex rates"
+*
+*/
+
+#ifndef PCF8576_H
+#define PCF8576_H
+
+#include "mbed.h"
+#include "char_pattern.h"
+
+#define PCF8576_CMD_MODE_SET 0x40
+#define PCF8576_CMD_LOAD_DATA 0x00
+#define PCF8576_CMD_DEVICE_SEL 0x60
+#define PCF8576_CMD_BANK_SEL 0x78
+#define PCF8576_CMD_BINK 0x70
+
+#define PCF8576_DEFAULT_SLAVE_ADDRESS 0x70
+
+/**
+* PCF8576 Universal LCD driver library example
+*
+* @code
+* #include "PCF8576.h"
+* PCF8576 lcd(D14, D15);
+*
+* int main() {
+* lcd.print("mbed");
+* while(1) {
+* }
+* }
+* @endcode
+*/
+class PCF8576 {
+public:
+ /**
+ * PCF8576 constructor
+ *
+ * @param sda SDA pin
+ * @param sdl SCL pin
+ * @param addr slave address of the I2C peripheral (default: 0x70)
+ */
+ PCF8576(PinName sda, PinName scl, int addr = PCF8576_DEFAULT_SLAVE_ADDRESS);
+
+ /**
+ * Create a PCF8576 instance which is connected to specified I2C pins
+ * with specified address
+ *
+ * @param i2c_obj I2C object (instance)
+ * @param addr slave address of the I2C-bus peripheral (default: 0x70)
+ */
+ PCF8576(I2C &i2c_obj, int addr = PCF8576_DEFAULT_SLAVE_ADDRESS);
+
+ /**
+ * PCF8576 destructor
+ */
+ ~PCF8576();
+
+ /** Initializa PCF8576 device
+ *
+ * Configure LCD setting
+ *
+ */
+ void initialize(void);
+
+ /**
+ * Print string
+ *
+ * @param str poiner to print string
+ */
+ void print(char *str);
+
+ /**
+ * Print icon bar
+ *
+ * @param level-bar pictogram icon from 0 (all off) to 0xF (all on)
+ */
+ void icon(uint32_t icon);
+
+private:
+ I2C m_i2c;
+ int m_addr;
+ char m_lcd_buf[14];
+ char m_C5_mask;
+ char m_C6_mask;
+
+};
+
+#endif
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/char_pattern.h Mon Mar 28 12:40:44 2016 +0000
@@ -0,0 +1,139 @@
+/***************************************************************************
+* connections PCF8576 to GH08172:
+*
+* a
+* ---------
+* | \ j / |
+* f | h | k | b *i
+* | \|/ |
+* -g-- --m-
+* | /|\ |
+* e | q | n | c *i
+* | / p \ |
+* --------- *l
+* d
+*
+** definition of segments in 16 bits:
+* 15 14 13 12 | 11 10 9 8 | 7 6 5 4 | 3 2 1 0
+* d e n p | c m l i | f g h q | a b j k
+*
+***************************************************************************/
+// segment bit masks
+#define SEGK 0x0001u
+#define SEGJ 0x0002u
+#define SEGB 0x0004u
+#define SEGA 0x0008u
+#define SEGQ 0x0010u
+#define SEGH 0x0020u
+#define SEGG 0x0040u
+#define SEGF 0x0080u
+#define SEGI 0x0100u
+#define SEGL 0x0200u
+#define SEGM 0x0400u
+#define SEGC 0x0800u
+#define SEGP 0x1000u
+#define SEGN 0x2000u
+#define SEGE 0x4000u
+#define SEGD 0x8000u
+
+const uint16_t FontMatrix[] =
+{
+ 0, // ' ' (space)
+ SEGF | SEGE, // ! (ugly)
+ SEGF | SEGB, // "
+ SEGA | SEGB | SEGC | SEGD | SEGE | SEGF | SEGG |
+ SEGH | SEGJ | SEGK | SEGM | SEGN | SEGP | SEGQ, // #
+ SEGA | SEGF | SEGG | SEGM | SEGC | SEGD | SEGJ | SEGP, // $
+ SEGF | SEGK | SEGQ | SEGC, // %
+ SEGA | SEGK | SEGG | SEGE | SEGD | SEGN | SEGH, // &
+ SEGJ, // '
+ SEGK | SEGN, // ( (== '<')
+ SEGH | SEGQ, // ) (== '>')
+ SEGH | SEGJ | SEGK | SEGG | SEGM | SEGQ | SEGP | SEGN, // *
+ SEGJ | SEGG | SEGM | SEGP, // +
+ SEGP, // ,
+ SEGG | SEGM, // -
+ SEGD, // . (== '_')
+ SEGK | SEGQ, // /
+ SEGA | SEGB | SEGC | SEGD | SEGE | SEGF, // 0
+ SEGC | SEGB, // 1
+ SEGA | SEGB | SEGM | SEGG | SEGE | SEGD, // 2
+ SEGA | SEGB | SEGM | SEGG | SEGC | SEGD, // 3
+ SEGF | SEGG | SEGM | SEGB | SEGC, // 4
+ SEGA | SEGF | SEGG | SEGM | SEGC | SEGD, // 5
+ SEGA | SEGF | SEGE | SEGD | SEGC | SEGM | SEGG, // 6
+ SEGA | SEGB | SEGC, // 7
+ SEGA | SEGB | SEGC | SEGD | SEGE | SEGF | SEGG | SEGM, // 8
+ SEGA | SEGF | SEGG | SEGM | SEGB | SEGC | SEGD, // 9 (== 'g')
+ SEGJ | SEGP, // : (ugly)
+ SEGJ | SEGQ, // ; (ugly)
+ SEGK | SEGN, // < (== '(')
+ SEGG | SEGM | SEGD, // =
+ SEGH | SEGQ, // > (== ')')
+ SEGA | SEGB | SEGM | SEGP, // ?
+ SEGA | SEGB | SEGD | SEGE | SEGF | SEGJ | SEGM, // @
+ SEGE | SEGF | SEGA | SEGB | SEGC | SEGG | SEGM, // A
+ SEGA | SEGB | SEGC | SEGD | SEGJ | SEGP | SEGM, // B
+ SEGA | SEGF | SEGE | SEGD, // C
+ SEGA | SEGB | SEGC | SEGD | SEGJ | SEGP, // D
+ SEGA | SEGF | SEGE | SEGD | SEGG | SEGM, // E
+ SEGA | SEGF | SEGE | SEGG | SEGM, // F
+ SEGA | SEGF | SEGE | SEGD | SEGC | SEGM, // G
+ SEGF | SEGE | SEGG | SEGM | SEGB | SEGC, // H
+ SEGA | SEGJ | SEGP | SEGD, // I
+ SEGB | SEGC | SEGD | SEGE, // J
+ SEGF | SEGE | SEGG | SEGK | SEGN, // K
+ SEGF | SEGE | SEGD, // L
+ SEGE | SEGF | SEGH | SEGK | SEGB | SEGC, // M
+ SEGE | SEGF | SEGH | SEGN | SEGC | SEGB, // N
+ SEGA | SEGB | SEGC | SEGD | SEGE | SEGF, // O
+ SEGE | SEGF | SEGA | SEGB | SEGG | SEGM, // P
+ SEGA | SEGB | SEGC | SEGD | SEGE | SEGF | SEGN, // Q
+ SEGE | SEGF | SEGA | SEGB | SEGG | SEGM | SEGN, // R
+ SEGA | SEGF | SEGG | SEGM | SEGC | SEGD, // S
+ SEGA | SEGJ | SEGP, // T
+ SEGF | SEGE | SEGD | SEGC | SEGB, // U
+ SEGF | SEGE | SEGQ | SEGK, // V
+ SEGF | SEGE | SEGQ | SEGN | SEGC | SEGB, // W
+ SEGH | SEGK | SEGQ | SEGN, // X
+ SEGF | SEGG | SEGM | SEGB | SEGP, // Y
+ SEGA | SEGK | SEGQ | SEGD, // Z
+ SEGA | SEGF | SEGE | SEGD, // [
+ SEGH | SEGN, // backslash
+ SEGA | SEGB | SEGC | SEGD, // ]
+ SEGF | SEGH, // ^
+ SEGD, // _ (== '.')
+ SEGH, // `
+ SEGG | SEGM | SEGE | SEGD | SEGN, // a
+ SEGF | SEGE | SEGD | SEGC | SEGG | SEGM, // b
+ SEGG | SEGM | SEGE | SEGD, // c
+ SEGG | SEGM | SEGE | SEGD | SEGC | SEGB, // d
+ SEGQ | SEGG | SEGE | SEGD, // e
+ SEGK | SEGG | SEGM | SEGP, // f
+ SEGA | SEGF | SEGG | SEGM | SEGB | SEGC | SEGD, // g (== '9')
+ SEGF | SEGE | SEGG | SEGM | SEGC, // h
+ SEGC, // i
+ SEGB | SEGC | SEGN, // j
+ SEGJ | SEGP | SEGM | SEGN, // k
+ SEGB | SEGC, // l
+ SEGE | SEGG | SEGM | SEGC | SEGP, // m
+ SEGE | SEGG | SEGM | SEGC, // n
+ SEGE | SEGG | SEGM | SEGC | SEGD, // o
+ SEGF | SEGE | SEGH | SEGG, // p
+ SEGB | SEGC | SEGM | SEGK, // q
+ SEGE | SEGG | SEGM, // r
+ SEGM | SEGN | SEGD, // s
+ SEGJ | SEGP | SEGG | SEGM, // t
+ SEGE | SEGD | SEGC, // u
+ SEGE | SEGQ, // v
+ SEGE | SEGQ | SEGN | SEGC, // w
+ SEGH | SEGK | SEGN | SEGQ, // x
+ SEGH | SEGK | SEGP, // y
+ SEGG | SEGQ | SEGD, // z
+ SEGK | SEGG | SEGN, // {
+ SEGJ | SEGP, // |
+ SEGH | SEGM | SEGQ, // }
+ SEGF | SEGH | SEGJ, // ~
+ SEGA | SEGB | SEGC | SEGD | SEGE | SEGF | SEGG |
+ SEGH | SEGJ | SEGK | SEGM | SEGN | SEGP | SEGQ // DEL (== '#')
+};
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Repository details
| Type: | Library |
|---|---|
| Created: | 28 Mar 2016 |
| Imports: | 14 |
| Forks: | 0 |
| Commits: | 2 |
| Dependents: | 1 |
| Dependencies: | 0 |
| Followers: | 1 |
The code in this repository is Apache licensed.
Components
NXP PCF8576 Universal LCD driver