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Hopefully finally fix the corrupt LCD

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The SPI bus is now selected and deselected before each set of commands.
Also speed up things by buffering many commands into a single batch.
This commit is contained in:
Fred Sundvik 2017-03-31 23:58:10 +03:00
parent 503565d174
commit 2b24d35846
2 changed files with 217 additions and 200 deletions
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44
keyboards/ergodox/infinity/drivers/gdisp/st7565ergodox/board_ST7565.h
View file

@ -37,10 +37,14 @@
// MSB First
// CLK Low by default
static const SPIConfig spi1config = {
NULL,
/* HW dependent part.*/
ST7565_GPIOPORT,
ST7565_SS_PIN,
// Operation complete callback or @p NULL.
.end_cb = NULL,
//The chip select line port - when not using pcs.
.ssport = ST7565_GPIOPORT,
// brief The chip select line pad number - when not using pcs.
.sspad=ST7565_SS_PIN,
// SPI initialization data.
.tar0 =
SPIx_CTARn_FMSZ(7)
| SPIx_CTARn_ASC(7)
| SPIx_CTARn_DT(7)
@ -50,13 +54,10 @@ static const SPIConfig spi1config = {
//SPI_CR1_BR_0
};
static bool_t st7565_is_data_mode = 1;
static GFXINLINE void init_board(GDisplay *g) {
(void) g;
palSetPadModeNamed(A0, PAL_MODE_OUTPUT_PUSHPULL);
palSetPad(ST7565_GPIOPORT, ST7565_A0_PIN);
st7565_is_data_mode = 1;
palSetPadModeNamed(RST, PAL_MODE_OUTPUT_PUSHPULL);
palSetPad(ST7565_GPIOPORT, ST7565_RST_PIN);
palSetPadModeRaw(MOSI, ST7565_SPI_MODE);
@ -65,7 +66,6 @@ static GFXINLINE void init_board(GDisplay *g) {
spiInit();
spiStart(&SPID1, &spi1config);
spiSelect(&SPID1);
}
static GFXINLINE void post_init_board(GDisplay *g) {
@ -86,39 +86,27 @@ static GFXINLINE void acquire_bus(GDisplay *g) {
(void) g;
// Only the LCD is using the SPI bus, so no need to acquire
// spiAcquireBus(&SPID1);
spiSelect(&SPID1);
}
static GFXINLINE void release_bus(GDisplay *g) {
(void) g;
// Only the LCD is using the SPI bus, so no need to release
//spiReleaseBus(&SPID1);
spiUnselect(&SPID1);
}
static GFXINLINE void write_cmd(GDisplay *g, uint8_t cmd) {
(void) g;
if (st7565_is_data_mode) {
// The sleeps need to be at lest 10 vs 25 ns respectively
// So let's sleep two ticks, one tick might not be enough
// if we are at the end of the tick
chThdSleep(2);
static GFXINLINE void enter_data_mode(GDisplay *g) {
palSetPad(ST7565_GPIOPORT, ST7565_A0_PIN);
}
static GFXINLINE void enter_cmd_mode(GDisplay *g) {
palClearPad(ST7565_GPIOPORT, ST7565_A0_PIN);
chThdSleep(2);
st7565_is_data_mode = 0;
}
spiSend(&SPID1, 1, &cmd);
}
static GFXINLINE void write_data(GDisplay *g, uint8_t* data, uint16_t length) {
(void) g;
if (!st7565_is_data_mode) {
// The sleeps need to be at lest 10 vs 25 ns respectively
// So let's sleep two ticks, one tick might not be enough
// if we are at the end of the tick
chThdSleep(2);
palSetPad(ST7565_GPIOPORT, ST7565_A0_PIN);
chThdSleep(2);
st7565_is_data_mode = 1;
}
spiSend(&SPID1, length, data);
}

29
keyboards/ergodox/infinity/drivers/gdisp/st7565ergodox/gdisp_lld_ST7565.c
View file

@ -58,12 +58,24 @@
typedef struct{
bool_t buffer2;
uint8_t data_pos;
uint8_t data[16];
uint8_t ram[GDISP_SCREEN_HEIGHT * GDISP_SCREEN_WIDTH / 8];
}PrivData;
// Some common routines and macros
#define PRIV(g) ((PrivData*)g->priv)
#define RAM(g) (PRIV(g)->ram)
static GFXINLINE void write_cmd(GDisplay* g, uint8_t cmd) {
PRIV(g)->data[PRIV(g)->data_pos++] = cmd;
}
static GFXINLINE void flush_cmd(GDisplay* g) {
write_data(g, PRIV(g)->data, PRIV(g)->data_pos);
PRIV(g)->data_pos = 0;
}
#define write_cmd2(g, cmd1, cmd2) { write_cmd(g, cmd1); write_cmd(g, cmd2); }
#define write_cmd3(g, cmd1, cmd2, cmd3) { write_cmd(g, cmd1); write_cmd(g, cmd2); write_cmd(g, cmd3); }
@ -89,6 +101,7 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
// The private area is the display surface.
g->priv = gfxAlloc(sizeof(PrivData));
PRIV(g)->buffer2 = false;
PRIV(g)->data_pos = 0;
// Initialise the board interface
init_board(g);
@ -100,6 +113,7 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
gfxSleepMilliseconds(20);
acquire_bus(g);
enter_cmd_mode(g);
write_cmd(g, ST7565_DISPLAY_OFF);
write_cmd(g, ST7565_LCD_BIAS);
write_cmd(g, ST7565_ADC);
@ -111,14 +125,17 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
// turn on voltage converter (VC=1, VR=0, VF=0)
write_cmd(g, ST7565_POWER_CONTROL | 0x04);
flush_cmd(g);
delay_ms(50);
// turn on voltage regulator (VC=1, VR=1, VF=0)
write_cmd(g, ST7565_POWER_CONTROL | 0x06);
flush_cmd(g);
delay_ms(50);
// turn on voltage follower (VC=1, VR=1, VF=1)
write_cmd(g, ST7565_POWER_CONTROL | 0x07);
flush_cmd(g);
delay_ms(50);
write_cmd(g, 0xE2);
@ -130,6 +147,7 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
write_cmd(g, ST7565_INVERT_DISPLAY);
write_cmd(g, ST7565_RMW);
flush_cmd(g);
// Finish Init
post_init_board(g);
@ -156,16 +174,21 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
return;
acquire_bus(g);
enter_cmd_mode(g);
unsigned dstOffset = (PRIV(g)->buffer2 ? 4 : 0);
for (p = 0; p < 4; p++) {
write_cmd(g, ST7565_PAGE | (p + dstOffset));
write_cmd(g, ST7565_COLUMN_MSB | 0);
write_cmd(g, ST7565_COLUMN_LSB | 0);
write_cmd(g, ST7565_RMW);
flush_cmd(g);
enter_data_mode(g);
write_data(g, RAM(g) + (p*GDISP_SCREEN_WIDTH), GDISP_SCREEN_WIDTH);
enter_cmd_mode(g);
}
unsigned line = (PRIV(g)->buffer2 ? 32 : 0);
write_cmd(g, ST7565_START_LINE | line);
flush_cmd(g);
PRIV(g)->buffer2 = !PRIV(g)->buffer2;
release_bus(g);
@ -242,12 +265,16 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
case powerSleep:
case powerDeepSleep:
acquire_bus(g);
enter_cmd_mode(g);
write_cmd(g, ST7565_DISPLAY_OFF);
flush_cmd(g);
release_bus(g);
break;
case powerOn:
acquire_bus(g);
enter_cmd_mode(g);
write_cmd(g, ST7565_DISPLAY_ON);
flush_cmd(g);
release_bus(g);
break;
default:
@ -281,7 +308,9 @@ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
if ((unsigned)g->p.ptr > 100)
g->p.ptr = (void *)100;
acquire_bus(g);
enter_cmd_mode(g);
write_cmd2(g, ST7565_CONTRAST, ((((unsigned)g->p.ptr)<<6)/101) & 0x3F);
flush_cmd(g);
release_bus(g);
g->g.Contrast = (unsigned)g->p.ptr;
return;