as good as i can get it
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
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@ -55,7 +55,7 @@
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*/
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#ifdef __SAM3X8E__
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#ifdef ARDUINO_ARCH_SAM
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#include <U8glib.h>
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#include <Arduino.h>
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@ -106,10 +106,10 @@ static void spiSend_sw_DUE(uint8_t val) { // 800KHz
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MOSI_pPio->PIO_SODR = MOSI_dwMask;
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else
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MOSI_pPio->PIO_CODR = MOSI_dwMask;
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val = val << 1;
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__delay_4cycles(2);
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__delay_4cycles(1);
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SCK_pPio->PIO_SODR = SCK_dwMask;
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__delay_4cycles(22);
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__delay_4cycles(19); // 16 dead, 17 garbage, 18/0 900kHz, 19/1 825k, 20/1 800k, 21/2 725KHz
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val <<= 1;
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SCK_pPio->PIO_CODR = SCK_dwMask;
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}
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}
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@ -151,9 +151,13 @@ uint8_t u8g_com_HAL_DUE_ST7920_sw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_va
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u8g_SetPILevel_DUE(u8g, U8G_PI_SCK, 0);
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u8g_SetPIOutput_DUE(u8g, U8G_PI_SCK);
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u8g_SetPILevel_DUE(u8g, U8G_PI_MOSI, 0);
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u8g_SetPILevel_DUE(u8g, U8G_PI_MOSI, 1);
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u8g_SetPIOutput_DUE(u8g, U8G_PI_MOSI);
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SCK_pPio->PIO_CODR = SCK_dwMask; //SCK low - needed at power up but not after reset
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MOSI_pPio->PIO_CODR = MOSI_dwMask; //MOSI low - needed at power up but not after reset
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u8g_Delay(5);
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u8g->pin_list[U8G_PI_A0_STATE] = 0; /* inital RS state: command mode */
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break;
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@ -199,6 +203,4 @@ uint8_t u8g_com_HAL_DUE_ST7920_sw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_va
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return 1;
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}
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#pragma GCC reset_options
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#endif //ARDUINO_ARCH_SAM
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@ -89,6 +89,27 @@ static const uint8_t u8g_dev_st7920_128x64_HAL_init_seq[] PROGMEM = {
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U8G_ESC_END /* end of sequence */
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};
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void clear_graphics_DRAM(u8g_t *u8g, u8g_dev_t *dev){
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u8g_SetChipSelect(u8g, dev, 1);
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u8g_Delay(1);
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u8g_SetAddress(u8g, dev, 0); // cmd mode
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u8g_WriteByte(u8g, dev, 0x08); //display off, cursor+blink off
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u8g_WriteByte(u8g, dev, 0x3E); //extended mode + GDRAM active
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for (uint8_t y = 0; y < (HEIGHT) / 2; y++) { //clear GDRAM
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u8g_WriteByte(u8g, dev, 0x80 | y); //set y
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u8g_WriteByte(u8g, dev, 0x80); //set x = 0
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u8g_SetAddress(u8g, dev, 1); /* data mode */
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for (uint8_t i = 0; i < 2 * (WIDTH) / 8; i++) //2x width clears both segments
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u8g_WriteByte(u8g, dev, 0);
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u8g_SetAddress(u8g, dev, 0); /* cmd mode */
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}
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u8g_WriteByte(u8g, dev, 0x0C); //display on, cursor+blink off
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u8g_SetChipSelect(u8g, dev, 0);
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}
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uint8_t u8g_dev_st7920_128x64_HAL_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, void *arg)
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{
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switch(msg)
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@ -96,6 +117,7 @@ uint8_t u8g_dev_st7920_128x64_HAL_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, vo
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case U8G_DEV_MSG_INIT:
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u8g_InitCom(u8g, dev, U8G_SPI_CLK_CYCLE_400NS);
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u8g_WriteEscSeqP(u8g, dev, u8g_dev_st7920_128x64_HAL_init_seq);
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clear_graphics_DRAM(u8g, dev);
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break;
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case U8G_DEV_MSG_STOP:
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break;
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@ -143,6 +165,7 @@ uint8_t u8g_dev_st7920_128x64_HAL_4x_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg,
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case U8G_DEV_MSG_INIT:
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u8g_InitCom(u8g, dev, U8G_SPI_CLK_CYCLE_400NS);
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u8g_WriteEscSeqP(u8g, dev, u8g_dev_st7920_128x64_HAL_init_seq);
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clear_graphics_DRAM(u8g, dev);
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break;
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case U8G_DEV_MSG_STOP:
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