bissen21/Marlin_Firmware
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as good as i can get it

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minor edits to force new Travis test (last one timed out)

Update u8g_com_HAL_DUE_st7920_sw_spi.cpp

initial power up display garbage gone
This commit is contained in:
Bob-the-Kuhn
2018-01-01 22:12:37 -06:00
parent f968b41f63
commit 4626d04067
2 changed files with 34 additions and 9 deletions
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23
Marlin/src/lcd/dogm/u8g_dev_st7920_128x64_HAL.cpp
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@ -89,6 +89,27 @@ static const uint8_t u8g_dev_st7920_128x64_HAL_init_seq[] PROGMEM = {
U8G_ESC_END /* end of sequence */
};
void clear_graphics_DRAM(u8g_t *u8g, u8g_dev_t *dev){
u8g_SetChipSelect(u8g, dev, 1);
u8g_Delay(1);
u8g_SetAddress(u8g, dev, 0); // cmd mode
u8g_WriteByte(u8g, dev, 0x08); //display off, cursor+blink off
u8g_WriteByte(u8g, dev, 0x3E); //extended mode + GDRAM active
for (uint8_t y = 0; y < (HEIGHT) / 2; y++) { //clear GDRAM
u8g_WriteByte(u8g, dev, 0x80 | y); //set y
u8g_WriteByte(u8g, dev, 0x80); //set x = 0
u8g_SetAddress(u8g, dev, 1); /* data mode */
for (uint8_t i = 0; i < 2 * (WIDTH) / 8; i++) //2x width clears both segments
u8g_WriteByte(u8g, dev, 0);
u8g_SetAddress(u8g, dev, 0); /* cmd mode */
}
u8g_WriteByte(u8g, dev, 0x0C); //display on, cursor+blink off
u8g_SetChipSelect(u8g, dev, 0);
}
uint8_t u8g_dev_st7920_128x64_HAL_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, void *arg)
{
switch(msg)
@ -96,6 +117,7 @@ uint8_t u8g_dev_st7920_128x64_HAL_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, vo
case U8G_DEV_MSG_INIT:
u8g_InitCom(u8g, dev, U8G_SPI_CLK_CYCLE_400NS);
u8g_WriteEscSeqP(u8g, dev, u8g_dev_st7920_128x64_HAL_init_seq);
clear_graphics_DRAM(u8g, dev);
break;
case U8G_DEV_MSG_STOP:
break;
@ -143,6 +165,7 @@ uint8_t u8g_dev_st7920_128x64_HAL_4x_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg,
case U8G_DEV_MSG_INIT:
u8g_InitCom(u8g, dev, U8G_SPI_CLK_CYCLE_400NS);
u8g_WriteEscSeqP(u8g, dev, u8g_dev_st7920_128x64_HAL_init_seq);
clear_graphics_DRAM(u8g, dev);
break;
case U8G_DEV_MSG_STOP: