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path: root/drivers/ugfx/gdisp/IS31FL3731C/gdisp_IS31FL3731C.c
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Diffstat (limited to 'drivers/ugfx/gdisp/IS31FL3731C/gdisp_IS31FL3731C.c')
-rw-r--r--drivers/ugfx/gdisp/IS31FL3731C/gdisp_IS31FL3731C.c312
1 files changed, 312 insertions, 0 deletions
diff --git a/drivers/ugfx/gdisp/IS31FL3731C/gdisp_IS31FL3731C.c b/drivers/ugfx/gdisp/IS31FL3731C/gdisp_IS31FL3731C.c
new file mode 100644
index 0000000000..2d78a5533c
--- /dev/null
+++ b/drivers/ugfx/gdisp/IS31FL3731C/gdisp_IS31FL3731C.c
@@ -0,0 +1,312 @@
+/*
+Copyright 2016 Fred Sundvik <fsundvik@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "gfx.h"
+
+#if GFX_USE_GDISP
+
+#define GDISP_DRIVER_VMT GDISPVMT_IS31FL3731C_ERGODOX
+#include "gdisp_lld_config.h"
+#include "src/gdisp/gdisp_driver.h"
+
+#include "board_IS31FL3731C.h"
+
+
+// Can't include led_tables from here
+extern const uint8_t CIE1931_CURVE[];
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+#ifndef GDISP_SCREEN_HEIGHT
+ #define GDISP_SCREEN_HEIGHT 9
+#endif
+#ifndef GDISP_SCREEN_WIDTH
+ #define GDISP_SCREEN_WIDTH 16
+#endif
+#ifndef GDISP_INITIAL_CONTRAST
+ #define GDISP_INITIAL_CONTRAST 0
+#endif
+#ifndef GDISP_INITIAL_BACKLIGHT
+ #define GDISP_INITIAL_BACKLIGHT 0
+#endif
+
+#define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER<<0)
+
+#define IS31_ADDR_DEFAULT 0x74
+
+#define IS31_REG_CONFIG 0x00
+// bits in reg
+#define IS31_REG_CONFIG_PICTUREMODE 0x00
+#define IS31_REG_CONFIG_AUTOPLAYMODE 0x08
+#define IS31_REG_CONFIG_AUDIOPLAYMODE 0x18
+// D2:D0 bits are starting frame for autoplay mode
+
+#define IS31_REG_PICTDISP 0x01 // D2:D0 frame select for picture mode
+
+#define IS31_REG_AUTOPLAYCTRL1 0x02
+// D6:D4 number of loops (000=infty)
+// D2:D0 number of frames to be used
+
+#define IS31_REG_AUTOPLAYCTRL2 0x03 // D5:D0 delay time (*11ms)
+
+#define IS31_REG_DISPLAYOPT 0x05
+#define IS31_REG_DISPLAYOPT_INTENSITY_SAME 0x20 // same intensity for all frames
+#define IS31_REG_DISPLAYOPT_BLINK_ENABLE 0x8
+// D2:D0 bits blink period time (*0.27s)
+
+#define IS31_REG_AUDIOSYNC 0x06
+#define IS31_REG_AUDIOSYNC_ENABLE 0x1
+
+#define IS31_REG_FRAMESTATE 0x07
+
+#define IS31_REG_BREATHCTRL1 0x08
+// D6:D4 fade out time (26ms*2^i)
+// D2:D0 fade in time (26ms*2^i)
+
+#define IS31_REG_BREATHCTRL2 0x09
+#define IS31_REG_BREATHCTRL2_ENABLE 0x10
+// D2:D0 extinguish time (3.5ms*2^i)
+
+#define IS31_REG_SHUTDOWN 0x0A
+#define IS31_REG_SHUTDOWN_OFF 0x0
+#define IS31_REG_SHUTDOWN_ON 0x1
+
+#define IS31_REG_AGCCTRL 0x0B
+#define IS31_REG_ADCRATE 0x0C
+
+#define IS31_COMMANDREGISTER 0xFD
+#define IS31_FUNCTIONREG 0x0B // helpfully called 'page nine'
+#define IS31_FUNCTIONREG_SIZE 0xD
+
+#define IS31_FRAME_SIZE 0xB4
+
+#define IS31_PWM_REG 0x24
+#define IS31_PWM_SIZE 0x90
+
+#define IS31_LED_MASK_SIZE 0x12
+#define IS31_SCREEN_WIDTH 16
+
+#define IS31
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+typedef struct{
+ uint8_t write_buffer_offset;
+ uint8_t write_buffer[IS31_FRAME_SIZE];
+ uint8_t frame_buffer[GDISP_SCREEN_HEIGHT * GDISP_SCREEN_WIDTH];
+ uint8_t page;
+}__attribute__((__packed__)) PrivData;
+
+// Some common routines and macros
+#define PRIV(g) ((PrivData*)g->priv)
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+static GFXINLINE void write_page(GDisplay* g, uint8_t page) {
+ uint8_t tx[2] __attribute__((aligned(2)));
+ tx[0] = IS31_COMMANDREGISTER;
+ tx[1] = page;
+ write_data(g, tx, 2);
+}
+
+static GFXINLINE void write_register(GDisplay* g, uint8_t page, uint8_t reg, uint8_t data) {
+ uint8_t tx[2] __attribute__((aligned(2)));
+ tx[0] = reg;
+ tx[1] = data;
+ write_page(g, page);
+ write_data(g, tx, 2);
+}
+
+static GFXINLINE void write_ram(GDisplay *g, uint8_t page, uint16_t offset, uint16_t length) {
+ PRIV(g)->write_buffer_offset = offset;
+ write_page(g, page);
+ write_data(g, (uint8_t*)PRIV(g), length + 1);
+}
+
+LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
+ // The private area is the display surface.
+ g->priv = gfxAlloc(sizeof(PrivData));
+ __builtin_memset(PRIV(g), 0, sizeof(PrivData));
+ PRIV(g)->page = 0;
+
+ // Initialise the board interface
+ init_board(g);
+ gfxSleepMilliseconds(10);
+
+ // zero function page, all registers (assuming full_page is all zeroes)
+ write_ram(g, IS31_FUNCTIONREG, 0, IS31_FUNCTIONREG_SIZE);
+ set_hardware_shutdown(g, false);
+ gfxSleepMilliseconds(10);
+ // software shutdown
+ write_register(g, IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, IS31_REG_SHUTDOWN_OFF);
+ gfxSleepMilliseconds(10);
+ // zero function page, all registers
+ write_ram(g, IS31_FUNCTIONREG, 0, IS31_FUNCTIONREG_SIZE);
+ gfxSleepMilliseconds(10);
+
+
+ // zero all LED registers on all 8 pages, and enable the mask
+ __builtin_memcpy(PRIV(g)->write_buffer, get_led_mask(g), IS31_LED_MASK_SIZE);
+ for(uint8_t i=0; i<8; i++) {
+ write_ram(g, i, 0, IS31_FRAME_SIZE);
+ gfxSleepMilliseconds(1);
+ }
+
+ // software shutdown disable (i.e. turn stuff on)
+ write_register(g, IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, IS31_REG_SHUTDOWN_OFF);
+ gfxSleepMilliseconds(10);
+
+ // Finish Init
+ post_init_board(g);
+
+ /* Initialise the GDISP structure */
+ g->g.Width = GDISP_SCREEN_WIDTH;
+ g->g.Height = GDISP_SCREEN_HEIGHT;
+ g->g.Orientation = GDISP_ROTATE_0;
+ g->g.Powermode = powerOff;
+ g->g.Backlight = GDISP_INITIAL_BACKLIGHT;
+ g->g.Contrast = GDISP_INITIAL_CONTRAST;
+ return TRUE;
+}
+
+#if GDISP_HARDWARE_FLUSH
+ LLDSPEC void gdisp_lld_flush(GDisplay *g) {
+ // Don't flush if we don't need it.
+ if (!(g->flags & GDISP_FLG_NEEDFLUSH))
+ return;
+
+ PRIV(g)->page++;
+ PRIV(g)->page %= 2;
+ // TODO: some smarter algorithm for this
+ // We should run only one physical page at a time
+ // This way we don't need to send so much data, and
+ // we could use slightly less memory
+ uint8_t* src = PRIV(g)->frame_buffer;
+ for (int y=0;y<GDISP_SCREEN_HEIGHT;y++) {
+ for (int x=0;x<GDISP_SCREEN_WIDTH;x++) {
+ uint8_t val = (uint16_t)*src * g->g.Backlight / 100;
+ PRIV(g)->write_buffer[get_led_address(g, x, y)]=CIE1931_CURVE[val];
+ ++src;
+ }
+ }
+ write_ram(g, PRIV(g)->page, IS31_PWM_REG, IS31_PWM_SIZE);
+ gfxSleepMilliseconds(1);
+ write_register(g, IS31_FUNCTIONREG, IS31_REG_PICTDISP, PRIV(g)->page);
+
+ g->flags &= ~GDISP_FLG_NEEDFLUSH;
+ }
+#endif
+
+#if GDISP_HARDWARE_DRAWPIXEL
+ LLDSPEC void gdisp_lld_draw_pixel(GDisplay *g) {
+ coord_t x, y;
+
+ switch(g->g.Orientation) {
+ default:
+ case GDISP_ROTATE_0:
+ x = g->p.x;
+ y = g->p.y;
+ break;
+ case GDISP_ROTATE_180:
+ x = GDISP_SCREEN_WIDTH-1 - g->p.x;
+ y = g->p.y;
+ break;
+ }
+ PRIV(g)->frame_buffer[y * GDISP_SCREEN_WIDTH + x] = gdispColor2Native(g->p.color);
+ g->flags |= GDISP_FLG_NEEDFLUSH;
+ }
+#endif
+
+#if GDISP_HARDWARE_PIXELREAD
+ LLDSPEC color_t gdisp_lld_get_pixel_color(GDisplay *g) {
+ coord_t x, y;
+
+ switch(g->g.Orientation) {
+ default:
+ case GDISP_ROTATE_0:
+ x = g->p.x;
+ y = g->p.y;
+ break;
+ case GDISP_ROTATE_180:
+ x = GDISP_SCREEN_WIDTH-1 - g->p.x;
+ y = g->p.y;
+ break;
+ }
+ return gdispNative2Color(PRIV(g)->frame_buffer[y * GDISP_SCREEN_WIDTH + x]);
+ }
+#endif
+
+#if GDISP_NEED_CONTROL && GDISP_HARDWARE_CONTROL
+ LLDSPEC void gdisp_lld_control(GDisplay *g) {
+ switch(g->p.x) {
+ case GDISP_CONTROL_POWER:
+ if (g->g.Powermode == (powermode_t)g->p.ptr)
+ return;
+ switch((powermode_t)g->p.ptr) {
+ case powerOff:
+ case powerSleep:
+ case powerDeepSleep:
+ write_register(g, IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, IS31_REG_SHUTDOWN_OFF);
+ break;
+ case powerOn:
+ write_register(g, IS31_FUNCTIONREG, IS31_REG_SHUTDOWN, IS31_REG_SHUTDOWN_ON);
+ break;
+ default:
+ return;
+ }
+ g->g.Powermode = (powermode_t)g->p.ptr;
+ return;
+
+ case GDISP_CONTROL_ORIENTATION:
+ if (g->g.Orientation == (orientation_t)g->p.ptr)
+ return;
+ switch((orientation_t)g->p.ptr) {
+ /* Rotation is handled by the drawing routines */
+ case GDISP_ROTATE_0:
+ case GDISP_ROTATE_180:
+ g->g.Height = GDISP_SCREEN_HEIGHT;
+ g->g.Width = GDISP_SCREEN_WIDTH;
+ break;
+ case GDISP_ROTATE_90:
+ case GDISP_ROTATE_270:
+ g->g.Height = GDISP_SCREEN_WIDTH;
+ g->g.Width = GDISP_SCREEN_HEIGHT;
+ break;
+ default:
+ return;
+ }
+ g->g.Orientation = (orientation_t)g->p.ptr;
+ return;
+
+ case GDISP_CONTROL_BACKLIGHT:
+ if (g->g.Backlight == (unsigned)g->p.ptr)
+ return;
+ unsigned val = (unsigned)g->p.ptr;
+ g->g.Backlight = val > 100 ? 100 : val;
+ g->flags |= GDISP_FLG_NEEDFLUSH;
+ return;
+ }
+ }
+#endif // GDISP_NEED_CONTROL
+
+#endif // GFX_USE_GDISP
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