NANO100_BSP V3.04.002
The Board Support Package for Nano100BN Series
i2c.h
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1/****************************************************************************/
12#ifndef __I2C_H__
13#define __I2C_H__
14
15#ifdef __cplusplus
16extern "C"
17{
18#endif
19
20
33#define I2C_STA 0x08
34#define I2C_STO 0x04
35#define I2C_SI 0x10
36#define I2C_AA 0x02
38#define I2C_GCMODE_ENABLE 1
39#define I2C_GCMODE_DISABLE 0 /* end of group NANO100_I2C_EXPORTED_CONSTANTS */
42
43
55#define I2C_SET_CONTROL_REG(i2c, u8Ctrl) ( (i2c)->CON = ((i2c)->CON & ~0x1e) | u8Ctrl )
56
63#define I2C_START(i2c) ( (i2c)->CON = ((i2c)->CON & ~I2C_CON_I2C_STS_Msk) | I2C_CON_START_Msk )
64
72static __INLINE int32_t I2C_STOP(I2C_T *i2c)
73{
74 int32_t tout = (SystemCoreClock / 10);
75
77 while((i2c->CON & I2C_CON_STOP_Msk) && (tout-- > 0));
78 if (i2c->CON & I2C_CON_STOP_Msk)
79 return -1;
80 return 0;
81}
82
90static __INLINE int32_t I2C_WAIT_READY(I2C_T *i2c)
91{
92 int32_t tout = (SystemCoreClock / 10);
93
94 while(!(i2c->INTSTS & I2C_INTSTS_INTSTS_Msk) && (tout-- > 0));
95 if (!(i2c->INTSTS & I2C_INTSTS_INTSTS_Msk))
96 return -1;
98 return 0;
99}
100
107#define I2C_GET_DATA(i2c) ( (i2c)->DATA )
108
116#define I2C_SET_DATA(i2c, u8Data) ( (i2c)->DATA = u8Data )
117
124#define I2C_GET_STATUS(i2c) ( (i2c)->STATUS )
125
134#define I2C_GET_TIMEOUT_FLAG(i2c) ( ((i2c)->INTSTS & I2C_INTSTS_TIF_Msk) == I2C_INTSTS_TIF_Msk ? 1:0 )
135
142#define I2C_CLEAR_TIMEOUT_FLAG(i2c) ( (i2c)->INTSTS |= I2C_INTSTS_TIF_Msk )
143
152#define I2C_GET_WAKEUP_FLAG(i2c) ( ((i2c)->WKUPSTS & I2C_WKUPSTS_WKUPIF_Msk) == I2C_WKUPSTS_WKUPIF_Msk ? 1:0 )
153
160#define I2C_CLEAR_WAKEUP_FLAG(i2c) ( (i2c)->WKUPSTS |= I2C_WKUPSTS_WKUPIF_Msk )
161
162uint32_t I2C_Open(I2C_T *i2c, uint32_t u32BusClock);
163void I2C_Close(I2C_T *i2c);
164void I2C_ClearTimeoutFlag(I2C_T *i2c);
165void I2C_Trigger(I2C_T *i2c, uint8_t u8Start, uint8_t u8Stop, uint8_t u8Si, uint8_t u8Ack);
166void I2C_DisableInt(I2C_T *i2c);
167void I2C_EnableInt(I2C_T *i2c);
168uint32_t I2C_GetBusClockFreq(I2C_T *i2c);
169uint32_t I2C_SetBusClockFreq(I2C_T *i2c, uint32_t u32BusClock);
170uint32_t I2C_GetIntFlag(I2C_T *i2c);
171void I2C_ClearIntFlag(I2C_T *i2c);
172uint32_t I2C_GetStatus(I2C_T *i2c);
173uint32_t I2C_GetData(I2C_T *i2c);
174void I2C_SetData(I2C_T *i2c, uint8_t u8Data);
175void I2C_SetSlaveAddr(I2C_T *i2c, uint8_t u8SlaveNo, uint8_t u8SlaveAddr, uint8_t u8GCMode);
176void I2C_SetSlaveAddrMask(I2C_T *i2c, uint8_t u8SlaveNo, uint8_t u8SlaveAddrMask);
177void I2C_EnableTimeout(I2C_T *i2c, uint8_t u8LongTimeout);
178void I2C_DisableTimeout(I2C_T *i2c);
179void I2C_EnableWakeup(I2C_T *i2c);
180void I2C_DisableWakeup(I2C_T *i2c);
181 /* end of group NANO100_I2C_EXPORTED_FUNCTIONS */
183 /* end of group NANO100_I2C_Driver */
185 /* end of group NANO100_Device_Driver */
187
188#ifdef __cplusplus
189}
190#endif
191
192#endif //__I2C_H__
193
194/*** (C) COPYRIGHT 2014 Nuvoton Technology Corp. ***/
#define I2C_CON_I2C_STS_Msk
#define I2C_INTSTS_INTSTS_Msk
#define I2C_CON_STOP_Msk
void I2C_SetSlaveAddrMask(I2C_T *i2c, uint8_t u8SlaveNo, uint8_t u8SlaveAddrMask)
Configure the mask of slave address. The corresponding address bit is "Don't Care".
Definition: i2c.c:237
static __INLINE int32_t I2C_STOP(I2C_T *i2c)
This macro only set STOP bit to the control register of I2C module.
Definition: i2c.h:72
void I2C_Close(I2C_T *i2c)
This function closes the I2C module.
Definition: i2c.c:52
uint32_t I2C_SetBusClockFreq(I2C_T *i2c, uint32_t u32BusClock)
This function sets bus frequency of I2C module.
Definition: i2c.c:144
void I2C_Trigger(I2C_T *i2c, uint8_t u8Start, uint8_t u8Stop, uint8_t u8Si, uint8_t u8Ack)
This function sets the control bit of the I2C module.
Definition: i2c.c:89
void I2C_EnableTimeout(I2C_T *i2c, uint8_t u8LongTimeout)
This function enables timeout function and configures DIV4 function to support long timeout.
Definition: i2c.c:256
void I2C_ClearTimeoutFlag(I2C_T *i2c)
This function clears the timeout flag.
Definition: i2c.c:75
void I2C_SetSlaveAddr(I2C_T *i2c, uint8_t u8SlaveNo, uint8_t u8SlaveAddr, uint8_t u8GCMode)
Configure slave address and enable GC mode.
Definition: i2c.c:217
void I2C_SetData(I2C_T *i2c, uint8_t u8Data)
This function writes the data to data register of I2C module.
Definition: i2c.c:202
uint32_t I2C_GetBusClockFreq(I2C_T *i2c)
This function returns the real bus clock of I2C module.
Definition: i2c.c:131
void I2C_EnableInt(I2C_T *i2c)
This function enables the interrupt (EI bit) of I2C module.
Definition: i2c.c:121
void I2C_DisableWakeup(I2C_T *i2c)
This function disables the wakeup function of I2C module.
Definition: i2c.c:291
uint32_t I2C_GetStatus(I2C_T *i2c)
This function returns the status of I2C module.
Definition: i2c.c:181
void I2C_DisableInt(I2C_T *i2c)
This function disables the interrupt of I2C module.
Definition: i2c.c:111
uint32_t I2C_GetData(I2C_T *i2c)
This function returns the data stored in data register of I2C module.
Definition: i2c.c:191
static __INLINE int32_t I2C_WAIT_READY(I2C_T *i2c)
This macro will return when I2C module is ready.
Definition: i2c.h:90
void I2C_EnableWakeup(I2C_T *i2c)
This function enables the wakeup function of I2C module.
Definition: i2c.c:281
void I2C_ClearIntFlag(I2C_T *i2c)
This function clears the interrupt flag of I2C module.
Definition: i2c.c:171
uint32_t I2C_GetIntFlag(I2C_T *i2c)
This function gets the interrupt flag of I2C module.
Definition: i2c.c:161
uint32_t I2C_Open(I2C_T *i2c, uint32_t u32BusClock)
This function make I2C module be ready and set the wanted bus clock.
Definition: i2c.c:34
void I2C_DisableTimeout(I2C_T *i2c)
This function disables timeout function.
Definition: i2c.c:271
__IO uint32_t INTSTS
__IO uint32_t CON
uint32_t SystemCoreClock