X-Git-Url: http://git.rohieb.name/hackover2013-badge-firmware.git/blobdiff_plain/a7be12a4e68fcaaa92f81a394bc316a592ec6270..72bd7e9482f3d8d8c08eac7cf5d8f466eff46aac:/drivers/displays/bitmap/ssd1306/ssd1306.c diff --git a/drivers/displays/bitmap/ssd1306/ssd1306.c b/drivers/displays/bitmap/ssd1306/ssd1306.c index e5bf364..f8e4ee4 100644 --- a/drivers/displays/bitmap/ssd1306/ssd1306.c +++ b/drivers/displays/bitmap/ssd1306/ssd1306.c @@ -45,31 +45,46 @@ #include "ssd1306.h" #include "core/gpio/gpio.h" +#include "core/i2c/i2c.h" #include "core/systick/systick.h" #include "drivers/displays/smallfonts.h" -void ssd1306SendByte(uint8_t byte); - -#define CMD(c) do { gpioSetValue( SSD1306_CS_PORT, SSD1306_CS_PIN, 1 ); \ - gpioSetValue( SSD1306_DC_PORT, SSD1306_DC_PIN, 0 ); \ - gpioSetValue( SSD1306_CS_PORT, SSD1306_CS_PIN, 0 ); \ - ssd1306SendByte( c ); \ - gpioSetValue( SSD1306_CS_PORT, SSD1306_CS_PIN, 1 ); \ - } while (0); -#define DATA(c) do { gpioSetValue( SSD1306_CS_PORT, SSD1306_CS_PIN, 1 ); \ - gpioSetValue( SSD1306_DC_PORT, SSD1306_DC_PIN, 1 ); \ - gpioSetValue( SSD1306_CS_PORT, SSD1306_CS_PIN, 0 ); \ - ssd1306SendByte( c ); \ - gpioSetValue( SSD1306_CS_PORT, SSD1306_CS_PIN, 1 ); \ - } while (0); #define DELAY(mS) do { systickDelay( mS / CFG_SYSTICK_DELAY_IN_MS ); } while(0); +// LCD framebuffer uint8_t _ssd1306buffer[SSD1306_LCDWIDTH * SSD1306_LCDHEIGHT / 8]; +#if defined SSD1306_BUS_I2C + void ssd1306SendCommand(uint8_t byte); + void ssd1306SendData(uint8_t data); + + extern volatile uint8_t I2CMasterBuffer[I2C_BUFSIZE]; + extern volatile uint8_t I2CSlaveBuffer[I2C_BUFSIZE]; + extern volatile uint32_t I2CReadLength, I2CWriteLength; +#endif + +#if defined SSD1306_BUS_SPI + void ssd1306SendByte(uint8_t byte); + + #define CMD(c) do { gpioSetValue( SSD1306_CS_PORT, SSD1306_CS_PIN, 1 ); \ + gpioSetValue( SSD1306_DC_PORT, SSD1306_DC_PIN, 0 ); \ + gpioSetValue( SSD1306_CS_PORT, SSD1306_CS_PIN, 0 ); \ + ssd1306SendByte( c ); \ + gpioSetValue( SSD1306_CS_PORT, SSD1306_CS_PIN, 1 ); \ + } while (0); + #define DATA(c) do { gpioSetValue( SSD1306_CS_PORT, SSD1306_CS_PIN, 1 ); \ + gpioSetValue( SSD1306_DC_PORT, SSD1306_DC_PIN, 1 ); \ + gpioSetValue( SSD1306_CS_PORT, SSD1306_CS_PIN, 0 ); \ + ssd1306SendByte( c ); \ + gpioSetValue( SSD1306_CS_PORT, SSD1306_CS_PIN, 1 ); \ + } while (0); +#endif + /**************************************************************************/ /* Private Methods */ /**************************************************************************/ +#if defined SSD1306_BUS_SPI /**************************************************************************/ /*! @brief Simulates an SPI write using GPIO @@ -96,6 +111,89 @@ void ssd1306SendByte(uint8_t byte) gpioSetValue(SSD1306_SCLK_PORT, SSD1306_SCLK_PIN, 1); } } +#endif + +#if defined SSD1306_BUS_I2C +/**************************************************************************/ +/*! + @brief Sends a command via I2C + + @param[in] byte + The byte to send +*/ +/**************************************************************************/ +void ssd1306SendCommand(uint8_t byte) +{ + uint8_t control = 0x00; // Co = 0, D/C = 0 + uint32_t i2cState; + + // Clear write buffers + uint32_t i; + for ( i = 0; i < I2C_BUFSIZE; i++ ) + { + I2CMasterBuffer[i] = 0x00; + } + + // Send the specified bytes + I2CWriteLength = 3; + I2CReadLength = 0; + I2CMasterBuffer[0] = SSD1306_I2C_ADDRESS; + I2CMasterBuffer[1] = control; + I2CMasterBuffer[2] = byte; + i2cState = i2cEngine(); + + // Check if we got an ACK + if ((i2cState == I2CSTATE_NACK) || (i2cState == I2CSTATE_SLA_NACK)) + { + // I2C slave didn't acknowledge the master transfer + // The PN532 probably isn't connected properly or the + // bus select pins are in the wrong state + // return PN532_ERROR_NACK; + } + + // return PN532_ERROR_NONE; +} + +/**************************************************************************/ +/*! + @brief Sends data via I2C + + @param[in] byte + The byte to send +*/ +/**************************************************************************/ +void ssd1306SendData(uint8_t data) +{ + uint8_t control = 0x40; // Co = 0, D/C = 1 + uint32_t i2cState; + + // Clear write buffers + uint32_t i; + for ( i = 0; i < I2C_BUFSIZE; i++ ) + { + I2CMasterBuffer[i] = 0x00; + } + + // Send the specified bytes + I2CWriteLength = 3; + I2CReadLength = 0; + I2CMasterBuffer[0] = SSD1306_I2C_ADDRESS; + I2CMasterBuffer[1] = control; + I2CMasterBuffer[2] = data; + i2cState = i2cEngine(); + + // Check if we got an ACK + if ((i2cState == I2CSTATE_NACK) || (i2cState == I2CSTATE_SLA_NACK)) + { + // I2C slave didn't acknowledge the master transfer + // The PN532 probably isn't connected properly or the + // bus select pins are in the wrong state + // return PN532_ERROR_NACK; + } + + // return PN532_ERROR_NONE; +} +#endif /**************************************************************************/ /*! @@ -158,96 +256,177 @@ static void ssd1306DrawChar(uint16_t x, uint16_t y, uint8_t c, struct FONT_DEF f /**************************************************************************/ void ssd1306Init(uint8_t vccstate) { - // Set all pins to output - gpioSetDir(SSD1306_SCLK_PORT, SSD1306_SCLK_PIN, gpioDirection_Output); - gpioSetDir(SSD1306_SDAT_PORT, SSD1306_SDAT_PIN, gpioDirection_Output); - gpioSetDir(SSD1306_DC_PORT, SSD1306_DC_PIN, gpioDirection_Output); - gpioSetDir(SSD1306_RST_PORT, SSD1306_RST_PIN, gpioDirection_Output); - gpioSetDir(SSD1306_CS_PORT, SSD1306_CS_PIN, gpioDirection_Output); - - // Reset the LCD - gpioSetValue(SSD1306_RST_PORT, SSD1306_RST_PIN, 1); - DELAY(1); - gpioSetValue(SSD1306_RST_PORT, SSD1306_RST_PIN, 0); - DELAY(10); - gpioSetValue(SSD1306_RST_PORT, SSD1306_RST_PIN, 1); - - #if defined SSD1306_128_32 - // Init sequence taken from datasheet for UG-2832HSWEG04 (128x32 OLED module) - CMD(SSD1306_DISPLAYOFF); // 0xAE - CMD(SSD1306_SETDISPLAYCLOCKDIV); // 0xD5 - CMD(0x80); // the suggested ratio 0x80 - CMD(SSD1306_SETMULTIPLEX); // 0xA8 - CMD(0x1F); // 31 - CMD(SSD1306_SETDISPLAYOFFSET); // 0xD3 - CMD(0x0); // no offset - CMD(SSD1306_SETSTARTLINE | 0x0); // line #0 - CMD(SSD1306_CHARGEPUMP); // 0x8D - if (vccstate == SSD1306_EXTERNALVCC) - { CMD(0x10) } - else - { CMD(0x14) } - CMD(SSD1306_MEMORYMODE); // 0x20 - CMD(0x00); // 0x0 act like ks0108 - CMD(SSD1306_SEGREMAP | 0x1); - CMD(SSD1306_COMSCANDEC); - CMD(SSD1306_SETCOMPINS); // 0xDA - CMD(0x02); - CMD(SSD1306_SETCONTRAST); // 0x81 - if (vccstate == SSD1306_EXTERNALVCC) - { CMD(0x9F) } - else - { CMD(0xCF) } - CMD(SSD1306_SETPRECHARGE); // 0xd9 - if (vccstate == SSD1306_EXTERNALVCC) - { CMD(0x22) } - else - { CMD(0xF1) } - CMD(SSD1306_SETVCOMDETECT); // 0xDB - CMD(0x40); - CMD(SSD1306_DISPLAYALLON_RESUME); // 0xA4 - CMD(SSD1306_NORMALDISPLAY); // 0xA6 + // SPI Initialisation + #if defined SSD1306_BUS_SPI + // Set all pins to output + gpioSetDir(SSD1306_SCLK_PORT, SSD1306_SCLK_PIN, gpioDirection_Output); + gpioSetDir(SSD1306_SDAT_PORT, SSD1306_SDAT_PIN, gpioDirection_Output); + gpioSetDir(SSD1306_DC_PORT, SSD1306_DC_PIN, gpioDirection_Output); + gpioSetDir(SSD1306_RST_PORT, SSD1306_RST_PIN, gpioDirection_Output); + gpioSetDir(SSD1306_CS_PORT, SSD1306_CS_PIN, gpioDirection_Output); + + // Reset the LCD + gpioSetValue(SSD1306_RST_PORT, SSD1306_RST_PIN, 1); + DELAY(1); + gpioSetValue(SSD1306_RST_PORT, SSD1306_RST_PIN, 0); + DELAY(10); + gpioSetValue(SSD1306_RST_PORT, SSD1306_RST_PIN, 1); + + #if defined SSD1306_128_32 + // Init sequence taken from datasheet for UG-2832HSWEG04 (128x32 OLED module) + CMD(SSD1306_DISPLAYOFF); // 0xAE + CMD(SSD1306_SETDISPLAYCLOCKDIV); // 0xD5 + CMD(0x80); // the suggested ratio 0x80 + CMD(SSD1306_SETMULTIPLEX); // 0xA8 + CMD(0x1F); // 31 + CMD(SSD1306_SETDISPLAYOFFSET); // 0xD3 + CMD(0x0); // no offset + CMD(SSD1306_SETSTARTLINE | 0x0); // line #0 + CMD(SSD1306_CHARGEPUMP); // 0x8D + if (vccstate == SSD1306_EXTERNALVCC) + { CMD(0x10) } + else + { CMD(0x14) } + CMD(SSD1306_MEMORYMODE); // 0x20 + CMD(0x00); // 0x0 act like ks0108 + CMD(SSD1306_SEGREMAP | 0x1); + CMD(SSD1306_COMSCANDEC); + CMD(SSD1306_SETCOMPINS); // 0xDA + CMD(0x02); + CMD(SSD1306_SETCONTRAST); // 0x81 + if (vccstate == SSD1306_EXTERNALVCC) + { CMD(0x9F) } + else + { CMD(0xCF) } + CMD(SSD1306_SETPRECHARGE); // 0xd9 + if (vccstate == SSD1306_EXTERNALVCC) + { CMD(0x22) } + else + { CMD(0xF1) } + CMD(SSD1306_SETVCOMDETECT); // 0xDB + CMD(0x40); + CMD(SSD1306_DISPLAYALLON_RESUME); // 0xA4 + CMD(SSD1306_NORMALDISPLAY); // 0xA6 + #endif + + #if defined SSD1306_128_64 + // Init sequence taken from datasheet for UG-2864HSWEG01 (128x64 OLED module) + CMD(SSD1306_DISPLAYOFF); // 0xAE + CMD(SSD1306_SETDISPLAYCLOCKDIV); // 0xD5 + CMD(0x80); // the suggested ratio 0x80 + CMD(SSD1306_SETMULTIPLEX); // 0xA8 + CMD(0x3F); // 63 + CMD(SSD1306_SETDISPLAYOFFSET); // 0xD3 + CMD(0x0); // no offset + CMD(SSD1306_SETSTARTLINE | 0x0); // line #0 + CMD(SSD1306_CHARGEPUMP); // 0x8D + if (vccstate == SSD1306_EXTERNALVCC) + { CMD(0x10) } + else + { CMD(0x14) } + CMD(SSD1306_MEMORYMODE); // 0x20 + CMD(0x00); // 0x0 act like ks0108 + CMD(SSD1306_SEGREMAP | 0x1); + CMD(SSD1306_COMSCANDEC); + CMD(SSD1306_SETCOMPINS); // 0xDA + CMD(0x12); + CMD(SSD1306_SETCONTRAST); // 0x81 + if (vccstate == SSD1306_EXTERNALVCC) + { CMD(0x9F) } + else + { CMD(0xCF) } + CMD(SSD1306_SETPRECHARGE); // 0xd9 + if (vccstate == SSD1306_EXTERNALVCC) + { CMD(0x22) } + else + { CMD(0xF1) } + CMD(SSD1306_SETVCOMDETECT); // 0xDB + CMD(0x40); + CMD(SSD1306_DISPLAYALLON_RESUME); // 0xA4 + CMD(SSD1306_NORMALDISPLAY); // 0xA6 + #endif + // Enabled the OLED panel + CMD(SSD1306_DISPLAYON); #endif - #if defined SSD1306_128_64 - // Init sequence taken from datasheet for UG-2864HSWEG01 (128x64 OLED module) - CMD(SSD1306_DISPLAYOFF); // 0xAE - CMD(SSD1306_SETDISPLAYCLOCKDIV); // 0xD5 - CMD(0x80); // the suggested ratio 0x80 - CMD(SSD1306_SETMULTIPLEX); // 0xA8 - CMD(0x3F); // 63 - CMD(SSD1306_SETDISPLAYOFFSET); // 0xD3 - CMD(0x0); // no offset - CMD(SSD1306_SETSTARTLINE | 0x0); // line #0 - CMD(SSD1306_CHARGEPUMP); // 0x8D - if (vccstate == SSD1306_EXTERNALVCC) - { CMD(0x10) } - else - { CMD(0x14) } - CMD(SSD1306_MEMORYMODE); // 0x20 - CMD(0x00); // 0x0 act like ks0108 - CMD(SSD1306_SEGREMAP | 0x1); - CMD(SSD1306_COMSCANDEC); - CMD(SSD1306_SETCOMPINS); // 0xDA - CMD(0x12); - CMD(SSD1306_SETCONTRAST); // 0x81 - if (vccstate == SSD1306_EXTERNALVCC) - { CMD(0x9F) } - else - { CMD(0xCF) } - CMD(SSD1306_SETPRECHARGE); // 0xd9 - if (vccstate == SSD1306_EXTERNALVCC) - { CMD(0x22) } - else - { CMD(0xF1) } - CMD(SSD1306_SETVCOMDETECT); // 0xDB - CMD(0x40); - CMD(SSD1306_DISPLAYALLON_RESUME); // 0xA4 - CMD(SSD1306_NORMALDISPLAY); // 0xA6 + // I2C Initialisation + #if defined SSD1306_BUS_I2C + #if defined SSD1306_128_32 + // Init sequence taken from datasheet for UG-2832HSWEG04 (128x32 OLED module) + ssd1306SendCommand(SSD1306_DISPLAYOFF); // 0xAE + ssd1306SendCommand(SSD1306_SETDISPLAYCLOCKDIV); // 0xD5 + ssd1306SendCommand(0x80); // the suggested ratio 0x80 + ssd1306SendCommand(SSD1306_SETMULTIPLEX); // 0xA8 + ssd1306SendCommand(0x1F); // 31 + ssd1306SendCommand(SSD1306_SETDISPLAYOFFSET); // 0xD3 + ssd1306SendCommand(0x0); // no offset + ssd1306SendCommand(SSD1306_SETSTARTLINE | 0x0); // line #0 + ssd1306SendCommand(SSD1306_CHARGEPUMP); // 0x8D + if (vccstate == SSD1306_EXTERNALVCC) + { ssd1306SendCommand(0x10); } + else + { ssd1306SendCommand(0x14); } + ssd1306SendCommand(SSD1306_MEMORYMODE); // 0x20 + ssd1306SendCommand(0x00); // 0x0 act like ks0108 + ssd1306SendCommand(SSD1306_SEGREMAP | 0x1); + ssd1306SendCommand(SSD1306_COMSCANDEC); + ssd1306SendCommand(SSD1306_SETCOMPINS); // 0xDA + ssd1306SendCommand(0x02); + ssd1306SendCommand(SSD1306_SETCONTRAST); // 0x81 + if (vccstate == SSD1306_EXTERNALVCC) + { ssd1306SendCommand(0x9F); } + else + { ssd1306SendCommand(0xCF); } + ssd1306SendCommand(SSD1306_SETPRECHARGE); // 0xd9 + if (vccstate == SSD1306_EXTERNALVCC) + { ssd1306SendCommand(0x22); } + else + { ssd1306SendCommand(0xF1); } + ssd1306SendCommand(SSD1306_SETVCOMDETECT); // 0xDB + ssd1306SendCommand(0x40); + ssd1306SendCommand(SSD1306_DISPLAYALLON_RESUME); // 0xA4 + ssd1306SendCommand(SSD1306_NORMALDISPLAY); // 0xA6 + #endif + + #if defined SSD1306_128_64 + // Init sequence taken from datasheet for UG-2864HSWEG01 (128x64 OLED module) + ssd1306SendCommand(SSD1306_DISPLAYOFF); // 0xAE + ssd1306SendCommand(SSD1306_SETDISPLAYCLOCKDIV); // 0xD5 + ssd1306SendCommand(0x80); // the suggested ratio 0x80 + ssd1306SendCommand(SSD1306_SETMULTIPLEX); // 0xA8 + ssd1306SendCommand(0x3F); // 63 + ssd1306SendCommand(SSD1306_SETDISPLAYOFFSET); // 0xD3 + ssd1306SendCommand(0x0); // no offset + ssd1306SendCommand(SSD1306_SETSTARTLINE | 0x0); // line #0 + ssd1306SendCommand(SSD1306_CHARGEPUMP); // 0x8D + if (vccstate == SSD1306_EXTERNALVCC) + { ssd1306SendCommand(0x10); } + else + { ssd1306SendCommand(0x14); } + ssd1306SendCommand(SSD1306_MEMORYMODE); // 0x20 + ssd1306SendCommand(0x00); // 0x0 act like ks0108 + ssd1306SendCommand(SSD1306_SEGREMAP | 0x1); + ssd1306SendCommand(SSD1306_COMSCANDEC); + ssd1306SendCommand(SSD1306_SETCOMPINS); // 0xDA + ssd1306SendCommand(0x12); + ssd1306SendCommand(SSD1306_SETCONTRAST); // 0x81 + if (vccstate == SSD1306_EXTERNALVCC) + { ssd1306SendCommand(0x9F); } + else + { ssd1306SendCommand(0xCF); } + ssd1306SendCommand(SSD1306_SETPRECHARGE); // 0xd9 + if (vccstate == SSD1306_EXTERNALVCC) + { ssd1306SendCommand(0x22); } + else + { ssd1306SendCommand(0xF1); } + ssd1306SendCommand(SSD1306_SETVCOMDETECT); // 0xDB + ssd1306SendCommand(0x40); + ssd1306SendCommand(SSD1306_DISPLAYALLON_RESUME); // 0xA4 + ssd1306SendCommand(SSD1306_NORMALDISPLAY); // 0xA6 + #endif + // Enable the OLED panel + ssd1306SendCommand(SSD1306_DISPLAYON); #endif - - // Enabled the OLED panel - CMD(SSD1306_DISPLAYON); } /**************************************************************************/ @@ -321,15 +500,29 @@ void ssd1306ClearScreen() /**************************************************************************/ void ssd1306Refresh(void) { - CMD(SSD1306_SETLOWCOLUMN | 0x0); // low col = 0 - CMD(SSD1306_SETHIGHCOLUMN | 0x0); // hi col = 0 - CMD(SSD1306_SETSTARTLINE | 0x0); // line #0 + #if defined SSD1306_BUS_SPI + CMD(SSD1306_SETLOWCOLUMN | 0x0); // low col = 0 + CMD(SSD1306_SETHIGHCOLUMN | 0x0); // hi col = 0 + CMD(SSD1306_SETSTARTLINE | 0x0); // line #0 - uint16_t i; - for (i=0; i<1024; i++) - { - DATA(_ssd1306buffer[i]); - } + uint16_t i; + for (i=0; i<1024; i++) + { + DATA(_ssd1306buffer[i]); + } + #endif + + #if defined SSD1306_BUS_I2C + ssd1306SendCommand(SSD1306_SETLOWCOLUMN | 0x0); // low col = 0 + ssd1306SendCommand(SSD1306_SETHIGHCOLUMN | 0x0); // hi col = 0 + ssd1306SendCommand(SSD1306_SETSTARTLINE | 0x0); // line #0 + + uint16_t i; + for (i=0; i<1024; i++) + { + ssd1306SendData(_ssd1306buffer[i]); + } + #endif } /**************************************************************************/