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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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36
Conf.cpp
View file

@ -110,6 +110,10 @@ m_tftSerialBrightness(50U),
m_hd44780Rows(2U),
m_hd44780Columns(16U),
m_hd44780Pins(),
m_hd44780PWM(),
m_hd44780PWMPin(),
m_hd44780PWMBright(),
m_hd44780PWMDim(),
m_nextionSize(),
m_nextionPort(),
m_nextionBrightness(50U)
@ -340,6 +344,17 @@ bool CConf::read()
m_hd44780Rows = (unsigned int)::atoi(value);
else if (::strcmp(key, "Columns") == 0)
m_hd44780Columns = (unsigned int)::atoi(value);
// WFV
else if (::strcmp(key, "PWM") == 0)
m_hd44780PWM = (unsigned int)::atoi(value);
else if (::strcmp(key, "PWMPin") == 0)
m_hd44780PWMPin = (unsigned int)::atoi(value);
else if (::strcmp(key, "PWMBright") == 0)
m_hd44780PWMBright = (unsigned int)::atoi(value);
else if (::strcmp(key, "PWMDim") == 0)
m_hd44780PWMDim = (unsigned int)::atoi(value);
else if (::strcmp(key, "Pins") == 0) {
char* p = ::strtok(value, ",\r\n");
while (p != NULL) {
@ -683,6 +698,27 @@ std::vector<unsigned int> CConf::getHD44780Pins() const
return m_hd44780Pins;
}
// WFV
unsigned int CConf::getHD44780PWM() const
{
return m_hd44780PWM;
}
unsigned int CConf::getHD44780PWMPin() const
{
return m_hd44780PWMPin;
}
unsigned int CConf::getHD44780PWMBright() const
{
return m_hd44780PWMBright;
}
unsigned int CConf::getHD44780PWMDim() const
{
return m_hd44780PWMDim;
}
std::string CConf::getNextionSize() const
{
return m_nextionSize;

12
Conf.h
View file

@ -118,6 +118,12 @@ public:
unsigned int getHD44780Columns() const;
std::vector<unsigned int> getHD44780Pins() const;
// WFV
unsigned int getHD44780PWM() const;
unsigned int getHD44780PWMPin() const;
unsigned int getHD44780PWMBright() const;
unsigned int getHD44780PWMDim() const;
// The Nextion section
std::string getNextionSize() const;
std::string getNextionPort() const;
@ -201,6 +207,12 @@ private:
unsigned int m_hd44780Columns;
std::vector<unsigned int> m_hd44780Pins;
//WFV
unsigned int m_hd44780PWM;
unsigned int m_hd44780PWMPin;
unsigned int m_hd44780PWMBright;
unsigned int m_hd44780PWMDim;
std::string m_nextionSize;
std::string m_nextionPort;
unsigned int m_nextionBrightness;

82
HD44780.cpp
View file

@ -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");

9
HD44780.h
View file

@ -37,7 +37,7 @@
class CHD44780 : public IDisplay
{
public:
CHD44780(unsigned int rows, unsigned int cols, const std::string& callsign, unsigned int dmrid, const std::vector<unsigned int>& pins);
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);
virtual ~CHD44780();
virtual bool open();
@ -69,6 +69,13 @@ private:
unsigned int m_d1;
unsigned int m_d2;
unsigned int m_d3;
// WFV
unsigned int m_PWM;
unsigned int m_PWMPin;
unsigned int m_PWMBright;
unsigned int m_PWMDim;
int m_fd;
bool m_dmr;

7
MMDVM.ini
View file

@ -86,6 +86,13 @@ Rows=2
Columns=16
# rs, strb, d0, d1, d2, d3
# Pins=11,10,0,1,2,3
# PWM brightness control
PWM=1
PWMPin=21
PWMBright=100
PWMDim=16
# Adafruit i2c HD44780
Pins=115,113,112,111,110,109

22
MMDVMHost.cpp
View file

@ -568,9 +568,15 @@ void CMMDVMHost::readParams()
void CMMDVMHost::createDisplay()
{
std::string type = m_conf.getDisplay();
std::string callsign = m_conf.getCallsign();
unsigned int dmrid = m_conf.getDMRId();
std::string type = m_conf.getDisplay();
std::string callsign = m_conf.getCallsign();
unsigned int dmrid = m_conf.getDMRId();
// WFV
unsigned int PWM = m_conf.getHD44780PWM();
unsigned int PWMPin = m_conf.getHD44780PWMPin();
unsigned int PWMBright = m_conf.getHD44780PWMBright();
unsigned int PWMDim = m_conf.getHD44780PWMDim();
LogInfo("Display Parameters");
LogInfo(" Type: %s", type.c_str());
@ -604,7 +610,15 @@ void CMMDVMHost::createDisplay()
LogInfo(" Columns: %u", columns);
LogInfo(" Pins: %u,%u,%u,%u,%u,%u", pins.at(0U), pins.at(1U), pins.at(2U), pins.at(3U), pins.at(4U), pins.at(5U));
m_display = new CHD44780(rows, columns, callsign, dmrid, pins);
// WFV
if (PWM == 1U) {
LogInfo("PWM Brightness Control Enabled");
LogInfo(" PWM Pin: %u", PWMPin);
LogInfo(" PWM Bright: %u", PWMBright);
LogInfo(" PWM Dim: %u", PWMDim);
}
m_display = new CHD44780(rows, columns, callsign, dmrid, pins, PWM, PWMPin, PWMBright, PWMDim);
}
#endif
} else {