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| 1 | #ifndef __I2C0_H |
1 | #ifndef __I2C0_H |
| 2 | #define __I2C0_H |
2 | #define __I2C0_H |
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| 3 | 3 | ||
| 4 | #include "i2c.h" |
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| 5 | extern volatile u32 I2C0_Timeout; |
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| - | 4 | #include "i2c1.h" |
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| 6 | 5 | ||
| 7 | 6 | extern volatile u32 I2C0_Timeout; |
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| 8 | // current I2C state |
7 | // current I2C state |
| 9 | extern volatile u8 I2C0_State; |
8 | extern volatile u8 I2C0_State; |
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| 10 | // the last I2C error |
9 | // the last I2C error |
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| 11 | extern volatile u8 I2C0_Error; |
10 | extern volatile u8 I2C0_Error; |
| 12 | 11 | ||
| 13 | #define I2C0_TIMEOUT 500 // 500 ms |
12 | #define I2C0_TIMEOUT 500 // 500 ms |
| 14 | 13 | ||
| 15 | // define the size of the rx/tx buffer |
14 | // define the size of the rx/tx buffer |
| 16 | #define I2C0_Buffer_LEN 100 |
15 | #define I2C0_BUFFER_LEN 100 |
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| 17 | // transfer buffer should be filled after a successful |
16 | // transfer buffer should be filled after a successful |
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| 18 | // I2C_LockBuffer(...) and before a start of transmission |
17 | // I2C_LockBuffer(...) and before a start of transmission |
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| 19 | // initiated by I2C_Transmission(...). |
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| 20 | extern volatile u8 I2C0_Buffer[]; |
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| 21 | - | ||
| 22 | void I2C0_Init(void); |
18 | // initiated by I2C_Transmission(...). |
| 23 | 19 | extern volatile u8 I2C0_Buffer[]; |
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| 24 | void I2C0_Deinit(void); |
20 | |
| 25 | 21 | void I2C0_Init(void); |
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| 26 | // the pointer to the rxbuffer handler function |
22 | |
| 27 | // called by the IRQ routine after all bytes are recieved from slave |
23 | void I2C0_Deinit(void); |
| 28 | 24 | ||
| 29 | // Initiate i2c transmission |
25 | // Initiate i2c transmission |
| 30 | // A transmission sends first TxBytes from I2C_Buffer0 to slave |
26 | // A transmission sends first TxBytes from I2C0_Buffer to slave |
| 31 | // and then RxBytes are read from slave to I2C_Buffer0 |
27 | // and then RxBytes are read from slave to I2C0_Buffer |
| 32 | // replacing the byte that have been sent. |
28 | // replacing the byte that have been sent. |
| 33 | // Then the RxHandler function is called to handle the result. |
29 | // Then the RxHandler function is called to handle the result. |
| 34 | // This function returns imediatly after a start condition. |
30 | // This function returns imediatly after a start condition. |
| 35 | // returns 1 if a transmission has been started, otherwise 0 |
31 | // returns 1 if a transmission has been started, otherwise 0 |