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copy of the C++ constructor since I noticed some weird setup issues

Browse Source 
https://github.com/intel-iot-devkit/upm/blob/master/src/lcd/jhd1313m1.cxx#L34
The main artifact I was noticing was a cursor always being displayed after my text. This version fixes this specific issue.
This commit is contained in:
Matt Aimonetti 2015-07-11 22:37:06 -07:00
parent b318d68a5b
commit 41ab911179
1 changed files with 16 additions and 27 deletions
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43
platforms/i2c/jhd1313m1_driver.go
View File

@ -34,6 +34,7 @@ const (
LCD_MOVERIGHT = 0x04
LCD_MOVELEFT = 0x00
LCD_2LINE = 0x08
LCD_CMD = 0x80
)
var _ gobot.Driver = (*JHD1313M1Driver)(nil)
@ -69,7 +70,6 @@ func (h *JHD1313M1Driver) Connection() gobot.Connection {
// Start starts the backlit and the screen and initializes the states.
func (h *JHD1313M1Driver) Start() []error {
cmd := uint8(0)
if err := h.connection.I2cStart(h.lcdAddress); err != nil {
return []error{err}
}
@ -78,40 +78,29 @@ func (h *JHD1313M1Driver) Start() []error {
return []error{err}
}
cmd |= LCD_2LINE
<-time.After(30 * time.Millisecond)
if err := h.connection.I2cWrite(h.lcdAddress, []byte{0x80, LCD_FUNCTIONSET | cmd}); err != nil {
return []error{err}
<-time.After(50000 * time.Microsecond)
payload := []byte{LCD_CMD, LCD_FUNCTIONSET | LCD_2LINE}
if err := h.connection.I2cWrite(h.lcdAddress, payload); err != nil {
if err := h.connection.I2cWrite(h.lcdAddress, payload); err != nil {
return []error{err}
}
}
<-time.After(40 * time.Nanosecond)
if err := h.connection.I2cWrite(h.lcdAddress, []byte{0x80, LCD_FUNCTIONSET | cmd}); err != nil {
return []error{err}
}
<-time.After(150 * time.Microsecond)
if err := h.connection.I2cWrite(h.lcdAddress, []byte{0x80, LCD_FUNCTIONSET | cmd}); err != nil {
return []error{err}
}
if err := h.connection.I2cWrite(h.lcdAddress, []byte{0x80, LCD_FUNCTIONSET | cmd}); err != nil {
return []error{err}
}
cmd |= LCD_DISPLAYON
if err := h.connection.I2cWrite(h.lcdAddress, []byte{0x80, LCD_DISPLAYCONTROL | cmd}); err != nil {
<-time.After(100 * time.Microsecond)
if err := h.connection.I2cWrite(h.lcdAddress, []byte{LCD_CMD, LCD_DISPLAYCONTROL | LCD_DISPLAYON}); err != nil {
return []error{err}
}
h.Clear()
cmd |= LCD_ENTRYLEFT | LCD_ENTRYSHIFTDECREMENT
if err := h.connection.I2cWrite(h.lcdAddress, []byte{0x80, LCD_ENTRYMODESET | cmd}); err != nil {
<-time.After(100 * time.Microsecond)
if err := h.Clear(); err != nil {
return []error{err}
}
if err := h.setReg(0, 1); err != nil {
if err := h.connection.I2cWrite(h.lcdAddress, []byte{LCD_CMD, LCD_ENTRYMODESET | LCD_ENTRYLEFT | LCD_ENTRYSHIFTDECREMENT}); err != nil {
return []error{err}
}
if err := h.setReg(0, 0); err != nil {
return []error{err}
}
if err := h.setReg(1, 0); err != nil {