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st7735: added new spi lcd module (missing bitmap and text)

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Signed-off-by: Kiveisha Yevgeniy <yevgeniy.kiveisha@intel.com>
This commit is contained in:
Kiveisha Yevgeniy
2014-06-13 13:50:55 +00:00
parent e24df89ebd
commit 3e12ed6719
9 changed files with 1069 additions and 0 deletions
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src/st7735/st7735.cxx Normal file
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/*
* Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
* Copyright (c) 2014 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <iostream>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "st7735.h"
using namespace upm;
ST7735::ST7735 (uint8_t csLCD, uint8_t cSD, uint8_t rs, uint8_t rst) : GFX (160, 128) {
maa_init();
m_csLCD = csLCD;
m_cSD = cSD;
m_rST = rst;
m_rS = rs;
initModule ();
configModule ();
}
ST7735::~ST7735 () {
maa_result_t error = MAA_SUCCESS;
error = maa_spi_stop(m_spi);
if (error != MAA_SUCCESS) {
maa_result_print(error);
}
error = maa_gpio_close (m_csLCDPinCtx);
if (error != MAA_SUCCESS) {
maa_result_print(error);
}
error = maa_gpio_close (m_cSDPinCtx);
if (error != MAA_SUCCESS) {
maa_result_print(error);
}
error = maa_gpio_close (m_rSTPinCtx);
if (error != MAA_SUCCESS) {
maa_result_print(error);
}
error = maa_gpio_close (m_rSPinCtx);
if (error != MAA_SUCCESS) {
maa_result_print(error);
}
}
void
ST7735::initModule () {
maa_result_t error = MAA_SUCCESS;
m_height = 160;
m_width = 128;
m_csLCDPinCtx = maa_gpio_init (m_csLCD);
if (m_csLCDPinCtx == NULL) {
fprintf (stderr, "Are you sure that pin%d you requested is valid on your platform?", m_csLCD);
exit (1);
}
m_cSDPinCtx = maa_gpio_init (m_cSD);
if (m_cSDPinCtx == NULL) {
fprintf (stderr, "Are you sure that pin%d you requested is valid on your platform?", m_cSD);
exit (1);
}
m_rSTPinCtx = maa_gpio_init (m_rST);
if (m_rSTPinCtx == NULL) {
fprintf (stderr, "Are you sure that pin%d you requested is valid on your platform?", m_rST);
exit (1);
}
m_rSPinCtx = maa_gpio_init (m_rS);
if (m_rSPinCtx == NULL) {
fprintf (stderr, "Are you sure that pin%d you requested is valid on your platform?", m_rS);
exit (1);
}
error = maa_gpio_dir (m_csLCDPinCtx, MAA_GPIO_OUT);
if (error != MAA_SUCCESS) {
maa_result_print (error);
}
error = maa_gpio_dir (m_cSDPinCtx, MAA_GPIO_OUT);
if (error != MAA_SUCCESS) {
maa_result_print (error);
}
error = maa_gpio_dir (m_rSTPinCtx, MAA_GPIO_OUT);
if (error != MAA_SUCCESS) {
maa_result_print (error);
}
error = maa_gpio_dir (m_rSPinCtx, MAA_GPIO_OUT);
if (error != MAA_SUCCESS) {
maa_result_print (error);
}
m_spi = maa_spi_init (0);
error = maa_spi_frequency(m_spi, 15 * 1000000);
if (error != MAA_SUCCESS) {
maa_result_print (error);
}
lcdCSOn ();
}
void
ST7735::write (uint8_t value) {
rsLOW ();
maa_spi_write (m_spi, value);
}
void
ST7735::data (uint8_t value) {
rsHIGH ();
maa_spi_write (m_spi, value);
}
void
ST7735::executeCMDList(const uint8_t *addr) {
uint8_t numCommands, numArgs;
uint16_t ms;
numCommands = *(addr++); // Number of commands to follow
while(numCommands--) { // For each command...
write (*(addr++)); // Read, issue command
numArgs = *(addr++); // Number of args to follow
ms = numArgs & DELAY; // If hibit set, delay follows args
numArgs &= ~DELAY; // Mask out delay bit
while(numArgs--) { // For each argument...
data (*(addr++)); // Read, issue argument
}
if(ms) {
ms = *(addr++); // Read post-command delay time (ms)
if (ms == 255) {
ms = 500; // If 255, delay for 500 ms
}
usleep (ms * 1000);
}
}
}
void
ST7735::setAddrWindow(uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1) {
uint8_t colstart, rowstart;
colstart = rowstart = 0;
write (ST7735_CASET); // Column addr set
rsHIGH ();
m_spiBuffer[0] = 0x00;
m_spiBuffer[1] = x0 + colstart; // XSTART
m_spiBuffer[2] = 0x00;
m_spiBuffer[3] = x1 + colstart; // XEND
maa_spi_write_buf(m_spi, m_spiBuffer, 4);
write (ST7735_RASET); // Row addr set
rsHIGH ();
m_spiBuffer[0] = 0x00;
m_spiBuffer[1] = y0 + rowstart; // YSTART
m_spiBuffer[2] = 0x00;
m_spiBuffer[3] = y1 + rowstart; // YEND
maa_spi_write_buf(m_spi, m_spiBuffer, 4);
write (ST7735_RAMWR); // write to RAM
}
void
ST7735::drawPixel(int16_t x, int16_t y, uint16_t color) {
if (MAA_SUCCESS != setPixel (x, y, color)) {
return;
}
refresh ();
}
void
ST7735::refresh () {
rsHIGH ();
int fragmentSize = m_height * m_width * 2 / 20;
for (int fragment = 0; fragment < 20; fragment++) {
maa_spi_write_buf(m_spi, &m_map[fragment * fragmentSize], fragmentSize);
}
}
void
ST7735::configModule() {
rsHIGH ();
lcdCSOff ();
lcdCSOn ();
maa_gpio_write (m_rSTPinCtx, HIGH);
usleep (500000);
maa_gpio_write (m_rSTPinCtx, LOW);
usleep (500000);
maa_gpio_write (m_rSTPinCtx, HIGH);
usleep (500000);
executeCMDList (Rcmd1);
executeCMDList (Rcmd2red);
executeCMDList (Rcmd3);
write (ST7735_MADCTL);
data (0xC0);
setAddrWindow (0, 0, m_width - 1, m_height - 1);
fillScreen (ST7735_BLACK);
refresh ();
}
void
ST7735::fill (int col, uint16_t* buff, int len) {
uint8_t colstart, rowstart;
uint8_t buf[len * 2];
colstart = 0;
write (ST7735_CASET); // Column addr set
rsHIGH ();
m_spiBuffer[0] = 0x00;
m_spiBuffer[1] = col + 1; // XSTART
m_spiBuffer[2] = 0x00;
m_spiBuffer[3] = col + 1; // XEND
maa_spi_write_buf(m_spi, m_spiBuffer, 4);
write (ST7735_RASET); // Row addr set
rsHIGH ();
m_spiBuffer[0] = 0x00;
m_spiBuffer[1] = 0x01; // YSTART
m_spiBuffer[2] = 0x00;
m_spiBuffer[3] = 0x9F; // YEND
maa_spi_write_buf(m_spi, m_spiBuffer, 4);
write (ST7735_RAMWR); // write to RAM
/*for (int idx = 0; idx < len; idx++) {
buf[idx*2] = buff[idx] >> 8;
buf[(idx*2)+1] = buff[idx];
}*/
rsHIGH ();
maa_spi_write_buf(m_spi, (uint8_t *)buff, len * 2);
}
maa_result_t
ST7735::lcdCSOn () {
maa_result_t error = MAA_SUCCESS;
error = maa_gpio_write (m_csLCDPinCtx, LOW);
if (error != MAA_SUCCESS) {
maa_result_print (error);
}
error = maa_gpio_write (m_cSDPinCtx, HIGH);
if (error != MAA_SUCCESS) {
maa_result_print (error);
}
return error;
}
maa_result_t
ST7735::lcdCSOff () {
maa_result_t error = MAA_SUCCESS;
error = maa_gpio_write (m_csLCDPinCtx, HIGH);
if (error != MAA_SUCCESS) {
maa_result_print (error);
}
return error;
}
maa_result_t
ST7735::sdCSOn () {
maa_result_t error = MAA_SUCCESS;
error = maa_gpio_write (m_cSDPinCtx, LOW);
if (error != MAA_SUCCESS) {
maa_result_print (error);
}
error = maa_gpio_write (m_csLCDPinCtx, HIGH);
if (error != MAA_SUCCESS) {
maa_result_print (error);
}
return error;
}
maa_result_t
ST7735::sdCSOff () {
maa_result_t error = MAA_SUCCESS;
error = maa_gpio_write (m_cSDPinCtx, HIGH);
if (error != MAA_SUCCESS) {
maa_result_print (error);
}
return error;
}
maa_result_t
ST7735::rsHIGH () {
maa_result_t error = MAA_SUCCESS;
error = maa_gpio_write (m_rSPinCtx, HIGH);
if (error != MAA_SUCCESS) {
maa_result_print (error);
}
return error;
}
maa_result_t
ST7735::rsLOW () {
maa_result_t error = MAA_SUCCESS;
error = maa_gpio_write (m_rSPinCtx, LOW);
if (error != MAA_SUCCESS) {
maa_result_print (error);
}
return error;
}