tinygo-org/drivers
1
0
Fork 0
mirror of https://github.com/tinygo-org/drivers.git synced 2026-08-03 06:27:47 +00:00
Code Issues Packages Projects Releases 10 Wiki Activity

st7735: make SPI Tx faster

Browse Source 
Most of the ceremony around pin toggling was in fact unnecessary. This
improves performance measurably (rougly 6% in one measurement) and cuts
down on binary size by 80 bytes.
This commit is contained in:
Ayke van Laethem
2019-10-10 20:35:50 +02:00
parent 955b3a56e8
commit dcfd9c066d
1 changed files with 2 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files
st7735/st7735.go
+2 -15
View File
@@ -383,21 +383,8 @@ func (d *Device) Data(data uint8) {
// Tx sends data to the display
func (d *Device) Tx(data []byte, isCommand bool) {
if isCommand {
d.csPin.High()
d.dcPin.Low()
d.csPin.Low()
d.bus.Tx(data, nil)
d.csPin.High()
} else {
d.csPin.High()
d.dcPin.High()
d.csPin.Low()
d.bus.Tx(data, nil)
d.csPin.High()
}
d.dcPin.Set(!isCommand)
d.bus.Tx(data, nil)
}
// Size returns the current size of the display.