#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
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
/**************************************************************************/
/*!
// Retrieve appropriate columns from font data
for (col = 0; col < font.u8Width; col++)
{
- column[col] = font.au8FontTable[((c - 32) * font.u8Width) + col]; // Get first column of appropriate character
+ column[col] = font.au8FontTable[((c - font.u8FirstChar) * font.u8Width) + col]; // Get first column of appropriate character
}
}
else
/**************************************************************************/
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);
}
/**************************************************************************/
/**************************************************************************/
void ssd1306ClearScreen()
{
- memset(_ssd1306buffer, 0, 1024);
+ memset(_ssd1306buffer, 0x00, sizeof(_ssd1306buffer));
}
/**************************************************************************/
/**************************************************************************/
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 < sizeof(_ssd1306buffer); 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 < sizeof(_ssd1306buffer); i++)
+ {
+ ssd1306SendData(_ssd1306buffer[i]);
+ }
+ #endif
}
/**************************************************************************/
projects / hackover2013-badge-firmware.git / blobdiff