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Adjusted timings on the ST7290 u8glib so RE-ARM and RAMPS4DUE have no problems when writing to the graphics LCD. This fixes Issue #8787 - Special thanks to Bergerac56 for testinf this out !!!

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This commit is contained in:
etagle 2017-12-21 02:33:22 -03:00
parent 498ea7512a
commit 99b2fc2066
1 changed files with 4 additions and 4 deletions
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8
Marlin/src/lcd/dogm/u8g_dev_st7920_128_64_sw_spi.cpp
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@ -158,9 +158,9 @@ FORCE_INLINE static void DELAY_CYCLES(uint32_t x) {
do {
WRITE(ST7920_CLK_PIN, LOW);
WRITE(ST7920_DAT_PIN, val & 0x80);
DELAY_NS(500);
DELAY_NS(700); /* RE-ARM requires 700ns to be stable, RAMPS4DUE works with 500ns */
WRITE(ST7920_CLK_PIN, HIGH);
DELAY_NS(500);
DELAY_NS(700); /* RE-ARM requires 700ns to be stable, RAMPS4DUE works with 500ns */
val <<= 1;
} while (--n);
}
@ -171,9 +171,9 @@ FORCE_INLINE static void DELAY_CYCLES(uint32_t x) {
#define ST7920_SND_BIT(nr) \
WRITE(ST7920_CLK_PIN, LOW); \
WRITE(ST7920_DAT_PIN, TEST(val, nr)); \
DELAY_NS(500); \
DELAY_NS(700); \
WRITE(ST7920_CLK_PIN, HIGH); \
DELAY_NS(500);
DELAY_NS(700);
static void ST7920_SWSPI_SND_8BIT(const uint8_t val) {
ST7920_SND_BIT(7); // MSBit