Andy Pomfret
HD44780 and compatible Text LCD controllers for Mbed OS 6. Fork of https://os.mbed.com/components/HD44780/
TextLCD for Mbed OS 6
A lightly modified fork of https://os.mbed.com/components/HD44780/ to support Mbed OS 6 and C++11. See the upstream project for documentation.
Revision 42:61aba48c7e5d, committed 2021-09-10
- Comitter:
- ajp109
- Date:
- Fri Sep 10 15:03:44 2021 +0000
- Parent:
- 41:111ca62e8a59
- Commit message:
- Updates for Mbed OS 6 and C++11 compatibility; changed default to "no cursor"
Changed in this revision
| TextLCD.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/TextLCD.cpp Fri Nov 06 18:59:27 2015 +0000
+++ b/TextLCD.cpp Fri Sep 10 15:03:44 2021 +0000
@@ -77,7 +77,7 @@
*/
void TextLCD_Base::_init(_LCDDatalength dl) {
- wait_ms(100); // Wait 100ms to ensure powered up
+ thread_sleep_for(100); // Wait 100ms to ensure powered up
#if (LCD_TWO_CTRL == 1)
// Select and configure second LCD controller when needed
@@ -123,15 +123,15 @@
//-------------------------------------------------------------------------------------------------
_writeNibble(0x3); // set 8 bit mode (MSN) and dummy LSN, | set 8 bit mode (MSN), | set dummy LSN,
// remains in 8 bit mode | remains in 4 bit mode | remains in 4 bit mode
- wait_ms(15); //
+ thread_sleep_for(15); //
_writeNibble(0x3); // set 8 bit mode (MSN) and dummy LSN, | set dummy LSN, | set 8bit mode (MSN),
// remains in 8 bit mode | change to 8 bit mode | remains in 4 bit mode
- wait_ms(15); //
+ thread_sleep_for(15); //
_writeNibble(0x3); // set 8 bit mode (MSN) and dummy LSN, | set 8 bit mode (MSN) and dummy LSN, | set dummy LSN,
// remains in 8 bit mode | remains in 8 bit mode | change to 8 bit mode
- wait_ms(15); //
+ thread_sleep_for(15); //
// Controller is now in 8 bit mode
@@ -145,7 +145,7 @@
else {
// Reset in 8 bit mode, final Function set will follow
_writeCommand(0x30); // Function set 0 0 1 DL=1 N F x x
- wait_ms(1); // most instructions take 40us
+ wait_us(100); // most instructions take 40us
}
// Device specific initialisations: DC/DC converter to generate VLCD or VLED, number of lines etc
@@ -442,10 +442,10 @@
// Saved to allow contrast change at later time
}
_writeCommand(0x50 | _icon_power | ((_contrast >> 4) & 0x03)); // Set Icon, Booster and Contrast High bits, 0 1 0 1 Ion Bon C5 C4 (IS=1)
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
_writeCommand(0x68 | (LCD_ST7032_RAB & 0x07)); // Voltage follower, 0 1 1 0 FOn=1, Ampl ratio Rab2=1, Rab1=0, Rab0=0 (IS=1)
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
_writeCommand(0x20 | _function); // Select Instruction Set = 0
@@ -518,10 +518,10 @@
}
_writeCommand(0x50 | _icon_power | ((_contrast >> 4) & 0x03)); // Set Contrast C5, C4 (Instr Set 1)
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
_writeCommand(0x68 | (LCD_ST7036_RAB & 0x07)); // Voltagefollower On = 1, Ampl ratio Rab2, Rab1, Rab0 = 1 0 1 (Instr Set 1)
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
_writeCommand(0x20 | _function); // Set function, IS2,IS1 = 00 (Select Instruction Set = 0)
@@ -691,7 +691,7 @@
_writeCommand(0x06); // Set ext entry mode, 0 0 0 0 0 1 BDC=1 COM1-32, BDS=0 SEG100-1 "Bottom View" (Ext Instr Set)
// _writeCommand(0x05); // Set ext entry mode, 0 0 0 0 0 1 BDC=0 COM32-1, BDS=1 SEG1-100 "Top View" (Ext Instr Set)
- wait_ms(5); // Wait to ensure completion or SSD1803 fails to set Top/Bottom after reset..
+ thread_sleep_for(5); // Wait to ensure completion or SSD1803 fails to set Top/Bottom after reset..
_writeCommand(0x08 | _lines); // Set ext function 0 0 0 0 1 FW BW NW 1,2,3 or 4 lines (Ext Instr Set)
@@ -710,10 +710,10 @@
_icon_power = 0x0C; // Icon on, Booster on (Instr Set 1)
// Saved to allow contrast change at later time
_writeCommand(0x50 | _icon_power | ((_contrast >> 4) & 0x03)); // Set Power, Icon and Contrast, 0 1 0 1 Ion Bon C5 C4 (Instr Set 1)
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
_writeCommand(0x68 | (LCD_SSD1_RAB & 0x07)); // Set Voltagefollower 0 1 1 0 Don = 1, Ampl ratio Rab2, Rab1, Rab0 = 1 1 0 (Instr Set 1)
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
_writeCommand(0x20 | _function_1); // Set function, 0 0 1 DL N BE RE(1) REV
// Select Extended Instruction Set 1
@@ -761,7 +761,7 @@
} // switch type
_writeCommand(0x20 | _function | 0x01); // Set function, Select Instr Set = 1
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
// Note: Display from GA628 shows 12 chars. This is actually the right half of a 24x1 display. The commons have been connected in reverse order.
_writeCommand(0x05); // Display Conf Set 0000 0, 1, P=0, Q=1 (Instr. Set 1)
@@ -817,7 +817,7 @@
_contrast = LCD_PCF2_CONTRAST;
_writeCommand(0x80 | 0x00 | (_contrast & 0x3F)); // VLCD_set (Instr. Set 1) 1, V=0, VA=contrast
_writeCommand(0x80 | 0x40 | (_contrast & 0x3F)); // VLCD_set (Instr. Set 1) 1, V=1, VB=contrast
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
_writeCommand(0x02); // Screen Config 0000 001, L=0 (Instr. Set 1)
_writeCommand(0x08); // ICON Conf 0000 1, IM=0 (Char mode), IB=0 (no icon blink) DM=0 (no direct mode) (Instr. Set 1)
@@ -841,7 +841,7 @@
case LCD24x1:
_writeCommand(0x22); //FUNCTION SET 0 0 1 DL=0 4-bit, N=0/M=0 1-line/24 chars display mode, G=1 Vgen on, 0
//Note: 4 bit mode is ignored for I2C mode
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
break;
case LCD12x3D: // Special mode for KS0078 and PCF21XX
@@ -849,13 +849,13 @@
case LCD12x4D: // Special mode for PCF21XX:
_writeCommand(0x2E); //FUNCTION SET 0 0 1 DL=0 4-bit, N=1/M=1 4-line/12 chars display mode, G=1 VGen on, 0
//Note: 4 bit mode is ignored for I2C mode
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
break;
case LCD24x2:
_writeCommand(0x2A); //FUNCTION SET 0 0 1 DL=0 4-bit, N=1/M=0 2-line/24 chars display mode, G=1 VGen on, 0
//Note: 4 bit mode is ignored for I2C mode
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
break;
default:
@@ -878,7 +878,7 @@
// case LCD24x1:
// _writeCommand(0x20); //FUNCTION SET 0 0 1 DL=0 4-bit, N=0/M=0 1-line/24 chars display mode, G=0 no Vgen, 0
//Note: 4 bit mode is ignored for I2C mode
-// wait_ms(10); // Wait 10ms to ensure powered up
+// thread_sleep_for(10); // Wait 10ms to ensure powered up
// break;
case LCD12x3D: // Special mode for KS0078 and PCF21XX
@@ -888,13 +888,13 @@
// _writeCommand(0x24); //FUNCTION SET 4 bit, N=0/M=1 4-line/12 chars display mode OK
_writeCommand(0x2C); //FUNCTION SET 0 0 1 DL=0 4-bit, N=1/M=1 4-line/12 chars display mode, G=0 no Vgen, 0 OK
//Note: 4 bit mode is ignored for I2C mode
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
break;
// case LCD24x2:
// _writeCommand(0x28); //FUNCTION SET 4 bit, N=1/M=0 2-line/24 chars display mode
//Note: 4 bit mode is ignored for I2C mode
-// wait_ms(10); // Wait 10ms to ensure powered up
+// thread_sleep_for(10); // Wait 10ms to ensure powered up
// break;
default:
@@ -912,7 +912,7 @@
// Note2: Vgen is switched off when the contrast voltage VA or VB is set to 0x00.
//POR or Hardware Reset should be applied
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
// Initialise Display configuration
switch (_type) {
@@ -957,7 +957,7 @@
_contrast = LCD_PCF2_CONTRAST;
_writeCommand(0x80 | 0x00 | (_contrast & 0x3F)); // VLCD_set (Instr. Set 1) V=0, VA=contrast
_writeCommand(0x80 | 0x40 | (_contrast & 0x3F)); // VLCD_set (Instr. Set 1) V=1, VB=contrast
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
_writeCommand(0x02); // SCRN CONF (Instr. Set 1) L=0
_writeCommand(0x08); // ICON CONF (Instr. Set 1) IM=0 (Char mode) IB=0 (no icon blink) DM=0 (no direct mode)
@@ -985,9 +985,9 @@
//@Todo: This may be needed to enable a warm reboot
//_writeCommand(0x13); // Char mode, DC/DC off
- //wait_ms(10); // Wait 10ms to ensure powered down
+ //thread_sleep_for(10); // Wait 10ms to ensure powered down
_writeCommand(0x17); // Char mode, DC/DC on
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
// Initialise Display configuration
switch (_type) {
@@ -1175,7 +1175,7 @@
_writeCommand(0xDB); // Set VCOMH Deselect Lvl: 1 1 0 1 1 0 1 1 (Ext Instr Set, OLED)
_writeCommand(0x30); // Set VCOMH Deselect Value: 0.83 x VCC
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
//Test Fade/Blinking. Hard Blink on/off, No fade in/out ??
// _writeCommand(0x23); // Set (Ext Instr Set, OLED)
@@ -1394,11 +1394,11 @@
// Saved to allow contrast change at later time
_writeCommand(0x50 | _icon_power | ((_contrast >> 4) & 0x03)); // Set Icon, Booster and Contrast High bits, 0 1 0 1 Ion Bon C5 C4 (IS=1)
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
_writeCommand(0x68 | (LCD_SPLC792A_RAB & 0x07)); // Voltage follower, 0 1 1 0 FOn=1, Ampl ratio Rab2=1, Rab1=0, Rab0=0 (IS=1)
// Note: Follower circuit always on for SPLC792A, Bit3 is dont care
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
_writeCommand(0x20 | _function); // Select Instruction Set = 0
@@ -1452,11 +1452,11 @@
// Controller general initialisations
// _writeCommand(0x01); // Clear Display and set cursor to 0
-// wait_ms(10); // The CLS command takes 1.64 ms.
+// thread_sleep_for(10); // The CLS command takes 1.64 ms.
// // Since we are not using the Busy flag, Lets be safe and take 10 ms
_writeCommand(0x02); // Cursor Home, DDRAM Address to Origin
- wait_ms(10); // The Return Home command takes 1.64 ms.
+ thread_sleep_for(10); // The Return Home command takes 1.64 ms.
// Since we are not using the Busy flag, Lets be safe and take 10 ms
_writeCommand(0x06); // Entry Mode 0000 0 1 I/D S
@@ -1472,8 +1472,8 @@
// _writeCommand(0x0C); // Display Ctrl 0000 1 D C B
// // Display On, Cursor Off, Blink Off
-// setCursor(CurOff_BlkOff);
- setCursor(CurOn_BlkOff);
+ setCursor(CurOff_BlkOff);
+// setCursor(CurOn_BlkOff);
setMode(DispOn);
}
@@ -1494,7 +1494,7 @@
// Second LCD controller Clearscreen
_writeCommand(0x01); // cls, and set cursor to 0
- wait_ms(20); // The CLS command takes 1.64 ms.
+ thread_sleep_for(20); // The CLS command takes 1.64 ms.
// Since we are not using the Busy flag, Lets be safe and take 10 ms
_ctrl_idx=_LCDCtrl_0; // Select primary controller
@@ -1503,7 +1503,7 @@
// Primary LCD controller Clearscreen
_writeCommand(0x01); // cls, and set cursor to 0
- wait_ms(20); // The CLS command takes 1.64 ms.
+ thread_sleep_for(20); // The CLS command takes 1.64 ms.
// Since we are not using the Busy flag, Lets be safe and take 10 ms
// Restore cursormode on primary LCD controller when needed
@@ -1514,7 +1514,7 @@
#else
// Support only one LCD controller
_writeCommand(0x01); // cls, and set cursor to 0
- wait_ms(20); // The CLS command takes 1.64 ms.
+ thread_sleep_for(20); // The CLS command takes 1.64 ms.
// Since we are not using the Busy flag, Lets be safe and take 10 ms
#endif
@@ -2405,7 +2405,7 @@
case WS0010:
_writeCommand(0x17); // Char mode, DC/DC on
- wait_ms(10); // Wait 10ms to ensure powered up
+ thread_sleep_for(10); // Wait 10ms to ensure powered up
break;
case KS0073:
@@ -2503,7 +2503,7 @@
_writeCommand(0x40 | 0x00); // COM/SEG directions 0 1 0 0 C1, C2, S1, S2 (Instr Set 1)
// C1=1: Com1-8 -> Com8-1; C2=1: Com9-16 -> Com16-9
// S1=1: Seg1-40 -> Seg40-1; S2=1: Seg41-80 -> Seg80-41
- wait_ms(5); // Wait to ensure completion or ST7070 fails to set Top/Bottom after reset..
+ thread_sleep_for(5); // Wait to ensure completion or ST7070 fails to set Top/Bottom after reset..
_writeCommand(0x20 | _function); // Set function, EXT=0 (Select Instr Set = 0)
@@ -2556,7 +2556,7 @@
_writeCommand(0x40 | 0x0F); // COM/SEG directions 0 1 0 0 C1, C2, S1, S2 (Instr Set 1)
// C1=1: Com1-8 -> Com8-1; C2=1: Com9-16 -> Com16-9
// S1=1: Seg1-40 -> Seg40-1; S2=1: Seg41-80 -> Seg80-41
- wait_ms(5); // Wait to ensure completion or ST7070 fails to set Top/Bottom after reset..
+ thread_sleep_for(5); // Wait to ensure completion or ST7070 fails to set Top/Bottom after reset..
_writeCommand(0x20 | _function); // Set function, EXT=0 (Select Instr Set = 0)
@@ -3441,7 +3441,9 @@
// Write data to MCP23008 I2C portexpander
// Used for mbed I2C bus expander
void TextLCD_I2C::_writeRegister (int reg, int value) {
- char data[] = {reg, value};
+ char data[2];
+ data[0] = reg;
+ data[1] = value;
_i2c->write(_slaveAddress, data, 2);
}
@@ -3525,7 +3527,7 @@
_spi->frequency(500000);
//_spi.frequency(1000000);
- wait_ms(100); // Wait 100ms to ensure LCD powered up
+ thread_sleep_for(100); // Wait 100ms to ensure LCD powered up
// Init the portexpander bus
_lcd_bus = LCD_BUS_SPI_DEF;
@@ -3735,7 +3737,9 @@
// RW=0 means write to controller. RW=1 means that controller will be read from after the next command.
// Many native I2C controllers dont support this option and it is not used by this lib.
//
- char data[] = {_controlbyte, value};
+ char data[2];
+ data[0] = _controlbyte;
+ data[1] = value;
#if(LCD_I2C_ACK==1)
//Controllers that support ACK