From 17dedc3aa4456756e8cae1a228c7bc645cca6d78 Mon Sep 17 00:00:00 2001
From: Robin Krens <robin@robinkrens.nl>
Date: Wed, 18 Sep 2019 14:31:54 +0700
Subject: [PATCH] st7735s: houston, we got a letter
---
drivers/st7735s.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++----
1 file changed, 49 insertions(+), 4 deletions(-)
diff --git a/drivers/st7735s.c b/drivers/st7735s.c
index ff8a64d..8eef4f3 100644
--- a/drivers/st7735s.c
+++ b/drivers/st7735s.c
@@ -21,6 +21,7 @@
#include <lib/regfunc.h>
#include <lib/string.h>
#include <lib/tinyprintf.h>
+//#include <lib/fonts/wogfont.h>
#include <drivers/st7735s.h>
@@ -28,6 +29,7 @@
#define SCRWIDTH 132
#define SCRHEIGHT 132
+int tft_putc(uint16_t, uint16_t, char);
void tft_init() {
/* Peripherial init */
@@ -94,8 +96,9 @@ void tft_init() {
/* Before turning on the display, fill the display
* so no random display data is shown */
- tft_fill(0,0,SCRWIDTH-1,SCRHEIGHT-1,0x001F);
- tft_setpixel(50,50,0xFFFF);
+ tft_fill(0,0,SCRWIDTH-1,SCRHEIGHT-1,0x0000);
+ //tft_setpixel(50,50,0xFFFF);
+ tft_putc(0xFFFF, 0x0000, 's');
/* Turn on */
tft_command(TFT_NORON, 0);
@@ -179,7 +182,7 @@ int tft_setpixel(uint8_t x, uint8_t y, uint16_t color) {
tft_command(TFT_CASET, 4, 0x00, x, 0x00, x+1);
tft_command(TFT_RASET, 4, 0x00, y, 0x00, y+1);
- tft_command(TFT_RAMWR, 2, (uint8_t) (color >> 8), (uint8_t) (color & 0xFF));
+tft_command(TFT_RAMWR, 2, (uint8_t) (color >> 8), (uint8_t) (color & 0xFF));
return 0;
}
@@ -188,11 +191,53 @@ int tft_setpixel(uint8_t x, uint8_t y, uint16_t color) {
* the location */
int tft_putc(uint16_t fg, uint16_t bg, char c) {
+ //chipselect();
+ // Bitmaps are 9 by 8
+ uint8_t databuf[9] = {0x73, 0xFB, 0xDB, 0xDB, 0xDB, 0xDB, 0xDB, 0xDF, 0xDA};
+ //uint8_t databuf[9] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+
+ int totalpixels = 72;
+ int column, row = 0;
+ uint8_t current;
+
+ tft_command(TFT_CASET, 4, 0x00, 10, 0x00, 18);
+ tft_command(TFT_RASET, 4, 0x00, 10, 0x00, 17);
+ tft_command(TFT_RAMWR, 0);
+ rsetbit(GPIOC_ODR, 6); // data = 1
+ for (int i = 0; i < totalpixels; i++) {
+
+ current = databuf[column];
+
+ if ((current >> (7 - row)) & 0x1) {
+ rwrite(SPI2_DR, (uint8_t) (fg >> 8));
+ if (!txbuf_empty())
+ return -1;
+ rwrite(SPI2_DR, (uint8_t) (fg & 0xFF));
+ if (!txbuf_empty())
+ return -1;
+ }
+ else {
+ rwrite(SPI2_DR, (uint8_t) (bg >> 8));
+ if (!txbuf_empty())
+ return -1;
+ rwrite(SPI2_DR, (uint8_t) (bg & 0xFF));
+ if (!txbuf_empty())
+ return -1;
+ }
+
+ /* Algoritm dependent on draw mode: top down, left right */
+ column++;
+ if (column > 8) {
+ column = 0;
+ row++;
+ }
+ }
+ return 0;
// lookup table
}
-/* Invokes commands with a variable list of paramaters. Sending paramters
+/* Invokes commands with a variable list of paramaters. Sending parameters
* requires the D/CX line to be high */
int tft_command(uint8_t cmd, int argsc, ...) {
--
2.7.4