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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20
Marlin/src/HAL/HAL_DUE/u8g_com_HAL_DUE_st7920_sw_spi.cpp
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@ -55,7 +55,7 @@
*/
#ifdef __SAM3X8E__
#ifdef ARDUINO_ARCH_SAM
#include <U8glib.h>
#include <Arduino.h>
@ -106,10 +106,10 @@ static void spiSend_sw_DUE(uint8_t val) { // 800KHz
MOSI_pPio->PIO_SODR = MOSI_dwMask;
else
MOSI_pPio->PIO_CODR = MOSI_dwMask;
val = val << 1;
__delay_4cycles(2);
__delay_4cycles(1);
SCK_pPio->PIO_SODR = SCK_dwMask;
__delay_4cycles(22);
__delay_4cycles(19); // 16 dead, 17 garbage, 18/0 900kHz, 19/1 825k, 20/1 800k, 21/2 725KHz
val <<= 1;
SCK_pPio->PIO_CODR = SCK_dwMask;
}
}
@ -129,8 +129,8 @@ static void u8g_com_DUE_st7920_write_byte_sw_spi(uint8_t rs, uint8_t val) {
/* data */
spiSend_sw_DUE(0x0fa);
for( i = 0; i < 4; i++ ) // give the controller some time to process the data
u8g_10MicroDelay(); // 2 is bad, 3 is OK, 4 is safe
for (i = 0; i < 4; i++) // give the controller some time to process the data
u8g_10MicroDelay(); // 2 is bad, 3 is OK, 4 is safe
}
spiSend_sw_DUE(val & 0x0f0);
@ -151,9 +151,13 @@ uint8_t u8g_com_HAL_DUE_ST7920_sw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_va
u8g_SetPILevel_DUE(u8g, U8G_PI_SCK, 0);
u8g_SetPIOutput_DUE(u8g, U8G_PI_SCK);
u8g_SetPILevel_DUE(u8g, U8G_PI_MOSI, 0);
u8g_SetPILevel_DUE(u8g, U8G_PI_MOSI, 1);
u8g_SetPIOutput_DUE(u8g, U8G_PI_MOSI);
SCK_pPio->PIO_CODR = SCK_dwMask; //SCK low - needed at power up but not after reset
MOSI_pPio->PIO_CODR = MOSI_dwMask; //MOSI low - needed at power up but not after reset
u8g_Delay(5);
u8g->pin_list[U8G_PI_A0_STATE] = 0; /* inital RS state: command mode */
break;
@ -199,6 +203,4 @@ uint8_t u8g_com_HAL_DUE_ST7920_sw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_va
return 1;
}
#pragma GCC reset_options
#endif //ARDUINO_ARCH_SAM