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HD44780 PWM backlight control

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This commit is contained in:
Tony Corbett
2016-05-01 16:59:43 +01:00
parent c54336c330
commit 414a1df408
6 changed files with 162 additions and 6 deletions
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82
HD44780.cpp
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@@ -20,6 +20,7 @@
#include "Log.h"
#include <wiringPi.h>
#include <softPwm.h>
#include <lcd.h>
#include <cstdio>
@@ -28,7 +29,7 @@
const char* LISTENING = "Listening ";
CHD44780::CHD44780(unsigned int rows, unsigned int cols, const std::string& callsign, unsigned int dmrid, const std::vector<unsigned int>& pins) :
CHD44780::CHD44780(unsigned int rows, unsigned int cols, const std::string& callsign, unsigned int dmrid, const std::vector<unsigned int>& pins, unsigned int PWM, unsigned int PWMPin, unsigned int PWMBright, unsigned int PWMDim) :
m_rows(rows),
m_cols(cols),
m_callsign(callsign),
@@ -39,6 +40,13 @@ m_d0(pins.at(2U)),
m_d1(pins.at(3U)),
m_d2(pins.at(4U)),
m_d3(pins.at(5U)),
// WFV
m_PWM(PWM),
m_PWMPin(PWMPin),
m_PWMBright(PWMBright),
m_PWMDim(PWMDim),
m_fd(-1),
m_dmr(false)
{
@@ -54,6 +62,18 @@ bool CHD44780::open()
{
::wiringPiSetup();
// WFV
if (m_PWM == 1U) {
if (m_PWMPin != 1U) {
::softPwmCreate(m_PWMPin, 0, 100);
::softPwmWrite(m_PWMPin, m_PWMDim);
}
else {
::pinMode(m_PWMPin, PWM_OUTPUT);
::pwmWrite(m_PWMPin, m_PWMDim);
}
}
#ifdef ADAFRUIT_DISPLAY
adafruitLCDSetup();
#endif
@@ -91,6 +111,16 @@ void CHD44780::setIdle()
{
::lcdClear(m_fd);
// WFV
if (m_PWM == 1U) {
if (m_PWMPin != 1U) {
::softPwmWrite(m_PWMPin, m_PWMDim);
}
else {
::pwmWrite(m_PWMPin, m_PWMDim);
}
}
::lcdPosition(m_fd, 0, 0);
::lcdPrintf(m_fd, "%-6s / %u", m_callsign.c_str(), m_dmrid);
@@ -106,6 +136,16 @@ void CHD44780::setError(const char* text)
::lcdClear(m_fd);
// WFV
if (m_PWM == 1U) {
if (m_PWMPin != 1U) {
::softPwmWrite(m_PWMPin, m_PWMBright);
}
else {
::pwmWrite(m_PWMPin, m_PWMBright);
}
}
::lcdPosition(m_fd, 0, 0);
::lcdPuts(m_fd, "MMDVM");
@@ -119,6 +159,16 @@ void CHD44780::setLockout()
{
::lcdClear(m_fd);
// WFV
if (m_PWM == 1U) {
if (m_PWMPin != 1U) {
::softPwmWrite(m_PWMPin, m_PWMBright);
}
else {
::pwmWrite(m_PWMPin, m_PWMBright);
}
}
::lcdPosition(m_fd, 0, 0);
::lcdPuts(m_fd, "MMDVM");
@@ -138,6 +188,16 @@ void CHD44780::writeDStar(const char* my1, const char* my2, const char* your, co
::lcdClear(m_fd);
// WFV
if (m_PWM == 1U) {
if (m_PWMPin != 1U) {
::softPwmWrite(m_PWMPin, m_PWMBright);
}
else {
::pwmWrite(m_PWMPin, m_PWMBright);
}
}
::lcdPosition(m_fd, 0, 0);
::lcdPuts(m_fd, "D-Star");
@@ -216,6 +276,16 @@ void CHD44780::writeDMR(unsigned int slotNo, const std::string& src, bool group,
if (!m_dmr) {
::lcdClear(m_fd);
// WFV
if (m_PWM == 1U) {
if (m_PWMPin != 1U) {
::softPwmWrite(m_PWMPin, m_PWMBright);
}
else {
::pwmWrite(m_PWMPin, m_PWMBright);
}
}
if (m_rows == 2U && m_cols == 16U) {
if (slotNo == 1U) {
::lcdPosition(m_fd, 0, 1);
@@ -349,6 +419,16 @@ void CHD44780::writeFusion(const char* source, const char* dest)
::lcdClear(m_fd);
// WFV
if (m_PWM == 1U) {
if (m_PWMPin != 1U) {
::softPwmWrite(m_PWMPin, m_PWMBright);
}
else {
::pwmWrite(m_PWMPin, m_PWMBright);
}
}
::lcdPosition(m_fd, 0, 0);
::lcdPuts(m_fd, "System Fusion");