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@ -105,21 +105,22 @@ static void ST7920_SWSPI_SND_8BIT(uint8_t val) { |
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#define U8G_DELAY() u8g_10MicroDelay() |
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#endif |
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#define ST7920_CS() { WRITE(ST7920_CS_PIN,1); U8G_DELAY(); } |
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#define ST7920_NCS() { WRITE(ST7920_CS_PIN,0); } |
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#define ST7920_SET_CMD() { ST7920_SWSPI_SND_8BIT(0xF8); U8G_DELAY(); } |
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#define ST7920_SET_DAT() { ST7920_SWSPI_SND_8BIT(0xFA); U8G_DELAY(); } |
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#define ST7920_WRITE_BYTE(a) { ST7920_SWSPI_SND_8BIT((uint8_t)((a)&0xF0u)); ST7920_SWSPI_SND_8BIT((uint8_t)((a)<<4u)); U8G_DELAY(); } |
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#define ST7920_WRITE_BYTES(p,l) { for (uint8_t i = l + 1; --i;) { ST7920_SWSPI_SND_8BIT(*p&0xF0); ST7920_SWSPI_SND_8BIT(*p<<4); p++; } U8G_DELAY(); } |
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#include "src/HAL/spi_api.h" |
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#define ST7920_CS() { HAL::SPI::enable_cs(LCD_SPI_CHANNEL); U8G_DELAY();} |
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#define ST7920_NCS() { HAL::SPI::disable_cs(LCD_SPI_CHANNEL); } |
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#define ST7920_SET_CMD() { HAL::SPI::write(LCD_SPI_CHANNEL, 0xF8); U8G_DELAY(); } |
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#define ST7920_SET_DAT() { HAL::SPI::write(LCD_SPI_CHANNEL, 0xFA); U8G_DELAY(); } |
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#define ST7920_WRITE_BYTE(a) { HAL::SPI::write(LCD_SPI_CHANNEL, (uint8_t)((a)&0xF0u)); HAL::SPI::write(LCD_SPI_CHANNEL, (uint8_t)((a)<<4u)); U8G_DELAY(); } |
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#define ST7920_WRITE_BYTES(p,l) { for (uint8_t j = l + 1; --j;) { HAL::SPI::write(LCD_SPI_CHANNEL, *p&0xF0); HAL::SPI::write(LCD_SPI_CHANNEL, *p<<4); p++; } U8G_DELAY(); } |
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uint8_t u8g_dev_rrd_st7920_128x64_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, void *arg) { |
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uint8_t i, y; |
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switch (msg) { |
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case U8G_DEV_MSG_INIT: { |
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OUT_WRITE(ST7920_CS_PIN, LOW); |
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OUT_WRITE(ST7920_DAT_PIN, LOW); |
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OUT_WRITE(ST7920_CLK_PIN, HIGH); |
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HAL::SPI::initialise(LCD_SPI_CHANNEL); |
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HAL::SPI::set_frequency(LCD_SPI_CHANNEL, LCD_SPI_FREQUENCY); |
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ST7920_CS(); |
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u8g_Delay(120); //initial delay for boot up
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ST7920_SET_CMD(); |
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