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@ -27,9 +27,6 @@ |
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#if ENABLED(U8GLIB_ST7920) |
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//set optimization so ARDUINO optimizes this file
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#pragma GCC optimize (3) |
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#define ST7920_CLK_PIN LCD_PINS_D4 |
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#define ST7920_DAT_PIN LCD_PINS_ENABLE |
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#define ST7920_CS_PIN LCD_PINS_RS |
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@ -43,20 +40,70 @@ |
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#include <U8glib.h> |
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//set optimization so ARDUINO optimizes this file
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#pragma GCC optimize (3) |
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#define DELAY_0_NOP NOOP |
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#define DELAY_1_NOP __asm__("nop\n\t") |
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#define DELAY_2_NOP __asm__("nop\n\t" "nop\n\t") |
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#define DELAY_3_NOP __asm__("nop\n\t" "nop\n\t" "nop\n\t") |
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#define DELAY_4_NOP __asm__("nop\n\t" "nop\n\t" "nop\n\t" "nop\n\t") |
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// If you want you can define your own set of delays in Configuration.h
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//#define ST7920_DELAY_1 DELAY_0_NOP
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//#define ST7920_DELAY_2 DELAY_0_NOP
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//#define ST7920_DELAY_3 DELAY_0_NOP
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#if F_CPU >= 20000000 |
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#define CPU_ST7920_DELAY_1 DELAY_0_NOP |
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#define CPU_ST7920_DELAY_2 DELAY_0_NOP |
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#define CPU_ST7920_DELAY_3 DELAY_1_NOP |
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#elif (MOTHERBOARD == BOARD_3DRAG) || (MOTHERBOARD == BOARD_K8200) |
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#define CPU_ST7920_DELAY_1 DELAY_0_NOP |
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#define CPU_ST7920_DELAY_2 DELAY_3_NOP |
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#define CPU_ST7920_DELAY_3 DELAY_0_NOP |
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#elif (MOTHERBOARD == BOARD_MINIRAMBO) |
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#define CPU_ST7920_DELAY_1 DELAY_0_NOP |
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#define CPU_ST7920_DELAY_2 DELAY_4_NOP |
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#define CPU_ST7920_DELAY_3 DELAY_0_NOP |
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#elif (MOTHERBOARD == BOARD_RAMBO) |
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#define CPU_ST7920_DELAY_1 DELAY_0_NOP |
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#define CPU_ST7920_DELAY_2 DELAY_0_NOP |
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#define CPU_ST7920_DELAY_3 DELAY_0_NOP |
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#elif F_CPU == 16000000 |
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#define CPU_ST7920_DELAY_1 DELAY_0_NOP |
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#define CPU_ST7920_DELAY_2 DELAY_0_NOP |
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#define CPU_ST7920_DELAY_3 DELAY_1_NOP |
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#else |
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#error "No valid condition for delays in 'ultralcd_st7920_u8glib_rrd.h'" |
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#endif |
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#ifndef ST7920_DELAY_1 |
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#define ST7920_DELAY_1 CPU_ST7920_DELAY_1 |
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#endif |
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#ifndef ST7920_DELAY_2 |
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#define ST7920_DELAY_2 CPU_ST7920_DELAY_2 |
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#endif |
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#ifndef ST7920_DELAY_3 |
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#define ST7920_DELAY_3 CPU_ST7920_DELAY_3 |
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#endif |
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#define ST7920_SND_BIT \ |
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WRITE(ST7920_CLK_PIN, LOW); ST7920_DELAY_1; \ |
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WRITE(ST7920_DAT_PIN, val & 0x80); ST7920_DELAY_2; \ |
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WRITE(ST7920_CLK_PIN, HIGH); ST7920_DELAY_3; \ |
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val <<= 1 |
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static void ST7920_SWSPI_SND_8BIT(uint8_t val) { |
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uint8_t i; |
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for (i = 0; i < 8; i++) { |
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WRITE(ST7920_CLK_PIN,0); |
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#if F_CPU == 20000000 |
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__asm__("nop\n\t"); |
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#endif |
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WRITE(ST7920_DAT_PIN,val&0x80); |
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val<<=1; |
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WRITE(ST7920_CLK_PIN,1); |
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#if F_CPU == 20000000 |
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__asm__("nop\n\t""nop\n\t"); |
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#endif |
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} |
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ST7920_SND_BIT; // 1
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ST7920_SND_BIT; // 2
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ST7920_SND_BIT; // 3
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ST7920_SND_BIT; // 4
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ST7920_SND_BIT; // 5
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ST7920_SND_BIT; // 6
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ST7920_SND_BIT; // 7
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ST7920_SND_BIT; // 8
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} |
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#define ST7920_CS() {WRITE(ST7920_CS_PIN,1);u8g_10MicroDelay();} |
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@ -138,6 +185,7 @@ class U8GLIB_ST7920_128X64_RRD : public U8GLIB { |
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U8GLIB_ST7920_128X64_RRD(uint8_t dummy) : U8GLIB(&u8g_dev_st7920_128x64_rrd_sw_spi) { UNUSED(dummy); } |
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}; |
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#pragma GCC reset_options |
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#endif //U8GLIB_ST7920
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#endif //ULCDST7920_H
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