alex/Adafruit-GFX-Library
1
0
Fork 0
mirror of https://github.com/adafruit/Adafruit-GFX-Library.git synced 2024-10-03 18:18:46 -04:00
Code Issues Actions Packages Projects Releases Wiki Activity

added the sendCommand function (#209)

Browse Source 
* Added sendCommand for SPI abstraction
This commit is contained in:
Melissa LeBlanc-Williams 2019-04-13 14:56:36 -07:00 committed by Limor "Ladyada" Fried
parent 253e30d6eb
commit 35055667c4
3 changed files with 48 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

45
Adafruit_SPITFT.cpp
View File

@ -1632,6 +1632,51 @@ uint16_t Adafruit_SPITFT::color565(uint8_t red, uint8_t green, uint8_t blue) {
return ((red & 0xF8) << 8) | ((green & 0xFC) << 3) | (blue >> 3);
}
/*!
@brief Adafruit_SPITFT Send Command handles complete sending of commands and data
@param commandByte The Command Byte
@param dataBytes A pointer to the Data bytes to send
@param numDataBytes The number of bytes we should send
*/
void Adafruit_SPITFT::sendCommand(uint8_t commandByte, uint8_t *dataBytes, uint8_t numDataBytes) {
SPI_BEGIN_TRANSACTION();
if(_cs >= 0) SPI_CS_LOW();
SPI_DC_LOW(); // Command mode
spiWrite(commandByte); // Send the command byte
SPI_DC_HIGH();
for (int i=0; i<numDataBytes; i++) {
spiWrite(*dataBytes); // Send the data bytes
dataBytes++;
}
if(_cs >= 0) SPI_CS_HIGH();
SPI_END_TRANSACTION();
}
/*!
@brief Adafruit_SPITFT Send Command handles complete sending of commands and const data
@param commandByte The Command Byte
@param dataBytes A pointer to the Data bytes to send
@param numDataBytes The number of bytes we should send
*/
void Adafruit_SPITFT::sendCommand(uint8_t commandByte, const uint8_t *dataBytes, uint8_t numDataBytes) {
SPI_BEGIN_TRANSACTION();
if(_cs >= 0) SPI_CS_LOW();
SPI_DC_LOW(); // Command mode
spiWrite(commandByte); // Send the command byte
SPI_DC_HIGH();
for (int i=0; i<numDataBytes; i++) {
spiWrite(pgm_read_byte(dataBytes++)); // Send the data bytes
}
if(_cs >= 0) SPI_CS_HIGH();
SPI_END_TRANSACTION();
}
// -------------------------------------------------------------------------
// Lowest-level hardware-interfacing functions. Many of these are inline and

2
Adafruit_SPITFT.h
View File

@ -187,6 +187,8 @@ class Adafruit_SPITFT : public Adafruit_GFX {
void startWrite(void);
// Chip deselect and/or hardware SPI transaction end as needed:
void endWrite(void);
void sendCommand(uint8_t commandByte, uint8_t *dataBytes = NULL, uint8_t numDataBytes = 0);
void sendCommand(uint8_t commandByte, const uint8_t *dataBytes, uint8_t numDataBytes);
// These functions require a chip-select and/or SPI transaction
// around them. Higher-level graphics primitives might start a

2
library.properties
View File

@ -1,5 +1,5 @@
name=Adafruit GFX Library
version=1.4.8
version=1.4.9
author=Adafruit
maintainer=Adafruit <info@adafruit.com>
sentence=Adafruit GFX graphics core library, this is the 'core' class that all our other graphics libraries derive from.