Added OLED SSD1306 support to I2C
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423c68c210
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65317a3a02
8 changed files with 908 additions and 21 deletions
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@ -16,7 +16,7 @@
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#define SLAVE_BUFFER_SIZE 0x10
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// i2c SCL clock frequency
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#define SCL_CLOCK 100000L
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#define SCL_CLOCK 400000L
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extern volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
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@ -28,4 +28,22 @@ uint8_t i2c_master_read(int);
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void i2c_reset_state(void);
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void i2c_slave_init(uint8_t address);
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static inline unsigned char i2c_start_read(unsigned char addr) {
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return i2c_master_start((addr << 1) | I2C_READ);
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}
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static inline unsigned char i2c_start_write(unsigned char addr) {
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return i2c_master_start((addr << 1) | I2C_WRITE);
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}
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// from SSD1306 scrips
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extern unsigned char i2c_rep_start(unsigned char addr);
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extern void i2c_start_wait(unsigned char addr);
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extern unsigned char i2c_readAck(void);
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extern unsigned char i2c_readNak(void);
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extern unsigned char i2c_read(unsigned char ack);
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#define i2c_read(ack) (ack) ? i2c_readAck() : i2c_readNak();
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#endif
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