uc-sdk
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Macros | |
#define | I2C_EVENT_MASTER_MODE_SELECT ((uint32_t)0x00030001) /* BUSY, MSL and SB flag */ |
Communication start. More... | |
#define | I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED ((uint32_t)0x00070082) /* BUSY, MSL, ADDR, TXE and TRA flags */ |
Address Acknowledge. More... | |
#define | I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED ((uint32_t)0x00030002) /* BUSY, MSL and ADDR flags */ |
#define | I2C_EVENT_MASTER_MODE_ADDRESS10 ((uint32_t)0x00030008) /* BUSY, MSL and ADD10 flags */ |
#define | I2C_EVENT_MASTER_BYTE_RECEIVED ((uint32_t)0x00030040) /* BUSY, MSL and RXNE flags */ |
Communication events. More... | |
#define | I2C_EVENT_MASTER_BYTE_TRANSMITTING ((uint32_t)0x00070080) /* TRA, BUSY, MSL, TXE flags */ |
#define | I2C_EVENT_MASTER_BYTE_TRANSMITTED ((uint32_t)0x00070084) /* TRA, BUSY, MSL, TXE and BTF flags */ |
#define | I2C_EVENT_SLAVE_RECEIVER_ADDRESS_MATCHED ((uint32_t)0x00020002) /* BUSY and ADDR flags */ |
Communication start events. More... | |
#define | I2C_EVENT_SLAVE_TRANSMITTER_ADDRESS_MATCHED ((uint32_t)0x00060082) /* TRA, BUSY, TXE and ADDR flags */ |
#define | I2C_EVENT_SLAVE_RECEIVER_SECONDADDRESS_MATCHED ((uint32_t)0x00820000) /* DUALF and BUSY flags */ |
#define | I2C_EVENT_SLAVE_TRANSMITTER_SECONDADDRESS_MATCHED ((uint32_t)0x00860080) /* DUALF, TRA, BUSY and TXE flags */ |
#define | I2C_EVENT_SLAVE_GENERALCALLADDRESS_MATCHED ((uint32_t)0x00120000) /* GENCALL and BUSY flags */ |
#define | I2C_EVENT_SLAVE_BYTE_RECEIVED ((uint32_t)0x00020040) /* BUSY and RXNE flags */ |
Communication events. More... | |
#define | I2C_EVENT_SLAVE_STOP_DETECTED ((uint32_t)0x00000010) /* STOPF flag */ |
#define | I2C_EVENT_SLAVE_BYTE_TRANSMITTED ((uint32_t)0x00060084) /* TRA, BUSY, TXE and BTF flags */ |
#define | I2C_EVENT_SLAVE_BYTE_TRANSMITTING ((uint32_t)0x00060080) /* TRA, BUSY and TXE flags */ |
#define | I2C_EVENT_SLAVE_ACK_FAILURE ((uint32_t)0x00000400) /* AF flag */ |
#define | IS_I2C_EVENT(EVENT) |
#define I2C_EVENT_MASTER_BYTE_RECEIVED ((uint32_t)0x00030040) /* BUSY, MSL and RXNE flags */ |
Communication events.
If a communication is established (START condition generated and slave address acknowledged) then the master has to check on one of the following events for communication procedures:
1) Master Receiver mode: The master has to wait on the event EV7 then to read the data received from the slave (I2C_ReceiveData() function).
2) Master Transmitter mode: The master has to send data (I2C_SendData() function) then to wait on event EV8 or EV8_2. These two events are similar:
Definition at line 383 of file stm32f10x_i2c.h.
#define I2C_EVENT_MASTER_BYTE_TRANSMITTED ((uint32_t)0x00070084) /* TRA, BUSY, MSL, TXE and BTF flags */ |
Definition at line 389 of file stm32f10x_i2c.h.
#define I2C_EVENT_MASTER_BYTE_TRANSMITTING ((uint32_t)0x00070080) /* TRA, BUSY, MSL, TXE flags */ |
Definition at line 387 of file stm32f10x_i2c.h.
#define I2C_EVENT_MASTER_MODE_ADDRESS10 ((uint32_t)0x00030008) /* BUSY, MSL and ADD10 flags */ |
Definition at line 350 of file stm32f10x_i2c.h.
#define I2C_EVENT_MASTER_MODE_SELECT ((uint32_t)0x00030001) /* BUSY, MSL and SB flag */ |
Communication start.
After sending the START condition (I2C_GenerateSTART() function) the master has to wait for this event. It means that the Start condition has been correctly released on the I2C bus (the bus is free, no other devices is communicating).
Definition at line 319 of file stm32f10x_i2c.h.
#define I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED ((uint32_t)0x00030002) /* BUSY, MSL and ADDR flags */ |
Definition at line 348 of file stm32f10x_i2c.h.
#define I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED ((uint32_t)0x00070082) /* BUSY, MSL, ADDR, TXE and TRA flags */ |
Address Acknowledge.
After checking on EV5 (start condition correctly released on the bus), the master sends the address of the slave(s) with which it will communicate (I2C_Send7bitAddress() function, it also determines the direction of the communication: Master transmitter or Receiver). Then the master has to wait that a slave acknowledges his address. If an acknowledge is sent on the bus, one of the following events will be set:
1) In case of Master Receiver (7-bit addressing): the I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED event is set.
2) In case of Master Transmitter (7-bit addressing): the I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED is set
3) In case of 10-Bit addressing mode, the master (just after generating the START and checking on EV5) has to send the header of 10-bit addressing mode (I2C_SendData() function). Then master should wait on EV9. It means that the 10-bit addressing header has been correctly sent on the bus. Then master should send the second part of the 10-bit address (LSB) using the function I2C_Send7bitAddress(). Then master should wait for event EV6.
Definition at line 347 of file stm32f10x_i2c.h.
#define I2C_EVENT_SLAVE_ACK_FAILURE ((uint32_t)0x00000400) /* AF flag */ |
Definition at line 472 of file stm32f10x_i2c.h.
#define I2C_EVENT_SLAVE_BYTE_RECEIVED ((uint32_t)0x00020040) /* BUSY and RXNE flags */ |
Communication events.
Wait on one of these events when EV1 has already been checked and:
Definition at line 463 of file stm32f10x_i2c.h.
#define I2C_EVENT_SLAVE_BYTE_TRANSMITTED ((uint32_t)0x00060084) /* TRA, BUSY, TXE and BTF flags */ |
Definition at line 469 of file stm32f10x_i2c.h.
#define I2C_EVENT_SLAVE_BYTE_TRANSMITTING ((uint32_t)0x00060080) /* TRA, BUSY and TXE flags */ |
Definition at line 470 of file stm32f10x_i2c.h.
#define I2C_EVENT_SLAVE_GENERALCALLADDRESS_MATCHED ((uint32_t)0x00120000) /* GENCALL and BUSY flags */ |
Definition at line 432 of file stm32f10x_i2c.h.
#define I2C_EVENT_SLAVE_RECEIVER_ADDRESS_MATCHED ((uint32_t)0x00020002) /* BUSY and ADDR flags */ |
Communication start events.
Wait on one of these events at the start of the communication. It means that the I2C peripheral detected a Start condition on the bus (generated by master device) followed by the peripheral address. The peripheral generates an ACK condition on the bus (if the acknowledge feature is enabled through function I2C_AcknowledgeConfig()) and the events listed above are set :
1) In normal case (only one address managed by the slave), when the address sent by the master matches the own address of the peripheral (configured by I2C_OwnAddress1 field) the I2C_EVENT_SLAVE_XXX_ADDRESS_MATCHED event is set (where XXX could be TRANSMITTER or RECEIVER).
2) In case the address sent by the master matches the second address of the peripheral (configured by the function I2C_OwnAddress2Config() and enabled by the function I2C_DualAddressCmd()) the events I2C_EVENT_SLAVE_XXX_SECONDADDRESS_MATCHED (where XXX could be TRANSMITTER or RECEIVER) are set.
3) In case the address sent by the master is General Call (address 0x00) and if the General Call is enabled for the peripheral (using function I2C_GeneralCallCmd()) the following event is set I2C_EVENT_SLAVE_GENERALCALLADDRESS_MATCHED.
Definition at line 424 of file stm32f10x_i2c.h.
#define I2C_EVENT_SLAVE_RECEIVER_SECONDADDRESS_MATCHED ((uint32_t)0x00820000) /* DUALF and BUSY flags */ |
Definition at line 428 of file stm32f10x_i2c.h.
#define I2C_EVENT_SLAVE_STOP_DETECTED ((uint32_t)0x00000010) /* STOPF flag */ |
Definition at line 465 of file stm32f10x_i2c.h.
#define I2C_EVENT_SLAVE_TRANSMITTER_ADDRESS_MATCHED ((uint32_t)0x00060082) /* TRA, BUSY, TXE and ADDR flags */ |
Definition at line 425 of file stm32f10x_i2c.h.
#define I2C_EVENT_SLAVE_TRANSMITTER_SECONDADDRESS_MATCHED ((uint32_t)0x00860080) /* DUALF, TRA, BUSY and TXE flags */ |
Definition at line 429 of file stm32f10x_i2c.h.
#define IS_I2C_EVENT | ( | EVENT) |
Definition at line 476 of file stm32f10x_i2c.h.