# Source: https://github.com/TraoreMorike/Raspberry-Pico---I2C-Slave I2C_OFFSET = { "I2C_IC_CON": 0x00000000, "I2C_IC_TAR": 0x00000004, "I2C_IC_SAR": 0x00000008, "I2C_IC_DATA_CMD": 0x00000010, "I2C_IC_SS_SCL_HCNT": 0x00000014, "I2C_IC_SS_SCL_LCNT": 0x00000018, "I2C_IC_FS_SCL_HCNT": 0x0000001c, "I2C_IC_FS_SCL_LCNT": 0x00000020, "I2C_IC_INTR_STAT": 0x0000002c, "I2C_IC_INTR_MASK": 0x00000030, "I2C_IC_RAW_INTR_STAT": 0x00000034, "I2C_IC_RX_TL": 0x00000038, "I2C_IC_TX_TL": 0x0000003c, "I2C_IC_CLR_INTR": 0x00000040, "I2C_IC_CLR_RX_UNDER": 0x00000044, "I2C_IC_CLR_RX_OVER": 0x00000048, "I2C_IC_CLR_TX_OVER": 0x0000004c, "I2C_IC_CLR_RD_REQ": 0x00000050, "I2C_IC_CLR_TX_ABRT": 0x00000054, "I2C_IC_CLR_RX_DONE": 0x00000058, "I2C_IC_CLR_ACTIVITY": 0x0000005c, "I2C_IC_CLR_STOP_DET": 0x00000060, "I2C_IC_CLR_START_DET": 0x00000064, "I2C_IC_CLR_GEN_CALL": 0x00000068, "I2C_IC_ENABLE": 0x0000006c, "I2C_IC_STATUS": 0x00000070, "I2C_IC_TXFLR": 0x00000074, "I2C_IC_RXFLR": 0x00000078, "I2C_IC_SDA_HOLD": 0x0000007c, "I2C_IC_TX_ABRT_SOURCE": 0x00000080, "I2C_IC_SLV_DATA_NACK_ONLY": 0x00000084, "I2C_IC_DMA_CR": 0x00000088, "I2C_IC_DMA_TDLR": 0x0000008c, "I2C_IC_DMA_RDLR": 0x00000090, "I2C_IC_SDA_SETUP": 0x00000094, "I2C_IC_ACK_GENERAL_CALL": 0x00000098, "I2C_IC_ENABLE_STATUS": 0x0000009c, "I2C_IC_FS_SPKLEN": 0x000000a0, "I2C_IC_CLR_RESTART_DET": 0x000000a8, "I2C_IC_COMP_PARAM_1": 0x000000f4, "I2C_IC_COMP_VERSION": 0x000000f8, "I2C_IC_COMP_TYPE": 0x000000fc, } I2C_IC_CON = { 0x00000400: "STOP_DET_IF_MASTER_ACTIVE", # Master issues the STOP_DET interrupt irrespective of whether... 0x00000200: "RX_FIFO_FULL_HLD_CTRL", # This bit controls whether DW_apb_i2c should hold the bus when the Rx... 0x00000100: "TX_EMPTY_CTRL", # This bit controls the generation of the TX_EMPTY interrupt, as described in... 0x00000080: "STOP_DET_IFADDRESSED", # In slave mode: - 1'b1: issues the STOP_DET interrupt only when it is... 0x00000040: "IC_SLAVE_DISABLE", # This bit controls whether I2C has its slave disabled, which means once... 0x00000020: "IC_RESTART_EN", # Determines whether RESTART conditions may be sent when acting as a master. 0x00000010: "IC_10BITADDR_MASTER", # Controls whether the DW_apb_i2c starts its transfers in 7- or 10-bit... 0x00000008: "IC_10BITADDR_SLAVE", # When acting as a slave, this bit controls whether the DW_apb_i2c... 0x00000006: "SPEED", # These bits control at which speed the DW_apb_i2c operates; its setting is relevant... 0x00000001: "MASTER_MODE", # This bit controls whether the DW_apb_i2c master is enabled. } I2C_IC_TAR = { 0x00000800: "SPECIAL", # This bit indicates whether software performs a Device-ID or General Call or START... 0x00000400: "GC_OR_START", # If bit 11 (SPECIAL) is set to 1 and bit 13(Device-ID) is set to 0, then this... 0x000003FF: "IC_TAR", # This is the target address for any master transaction } I2C_IC_SAR = { 0x000003FF: "IC_SAR", # The IC_SAR holds the slave address when the I2C is operating as a slave } I2C_IC_DATA_CMD = { 0x00000800: "FIRST_DATA_BYTE", # Indicates the first data byte received after the address phase for receive... 0x00000400: "RESTART", # This bit controls whether a RESTART is issued before the byte is sent or received 0x00000200: "STOP", # This bit controls whether a STOP is issued after the byte is sent or received 0x00000100: "CMD", # This bit controls whether a read or a write is performed 0x000000FF: "DAT", # This register contains the data to be transmitted or received on the I2C bus } I2C_IC_SS_SCL_HCNT = { 0x0000FFFF: "IC_SS_SCL_HCNT", # This register must be set before any I2C bus transaction can take place... } I2C_IC_SS_SCL_LCNT = { 0x0000FFFF: "IC_SS_SCL_LCNT", # This register must be set before any I2C bus transaction can take place... } I2C_IC_FS_SCL_HCNT = { 0x0000FFFF: "IC_FS_SCL_HCNT", # This register must be set before any I2C bus transaction can take place... } I2C_IC_FS_SCL_LCNT = { 0x0000FFFF: "IC_FS_SCL_LCNT", # This register must be set before any I2C bus transaction can take place... } I2C_IC_INTR_STAT = { 0x00001000: "R_RESTART_DET", # See IC_RAW_INTR_STAT for a detailed description of R_RESTART_DET bit 0x00000800: "R_GEN_CALL", # See IC_RAW_INTR_STAT for a detailed description of R_GEN_CALL bit 0x00000400: "R_START_DET", # See IC_RAW_INTR_STAT for a detailed description of R_START_DET bit 0x00000200: "R_STOP_DET", # See IC_RAW_INTR_STAT for a detailed description of R_STOP_DET bit 0x00000100: "R_ACTIVITY", # See IC_RAW_INTR_STAT for a detailed description of R_ACTIVITY bit 0x00000080: "R_RX_DONE", # See IC_RAW_INTR_STAT for a detailed description of R_RX_DONE bit 0x00000040: "R_TX_ABRT", # See IC_RAW_INTR_STAT for a detailed description of R_TX_ABRT bit 0x00000020: "R_RD_REQ", # See IC_RAW_INTR_STAT for a detailed description of R_RD_REQ bit 0x00000010: "R_TX_EMPTY", # See IC_RAW_INTR_STAT for a detailed description of R_TX_EMPTY bit 0x00000008: "R_TX_OVER", # See IC_RAW_INTR_STAT for a detailed description of R_TX_OVER bit 0x00000004: "R_RX_FULL", # See IC_RAW_INTR_STAT for a detailed description of R_RX_FULL bit 0x00000002: "R_RX_OVER", # See IC_RAW_INTR_STAT for a detailed description of R_RX_OVER bit 0x00000001: "R_RX_UNDER", # See IC_RAW_INTR_STAT for a detailed description of R_RX_UNDER bit } I2C_IC_INTR_MASK = { 0x00001000: "M_RESTART_DET", # This bit masks the R_RESTART_DET interrupt in IC_INTR_STAT register 0x00000800: "M_GEN_CALL", # This bit masks the R_GEN_CALL interrupt in IC_INTR_STAT register 0x00000400: "M_START_DET", # This bit masks the R_START_DET interrupt in IC_INTR_STAT register 0x00000200: "M_STOP_DET", # This bit masks the R_STOP_DET interrupt in IC_INTR_STAT register 0x00000100: "M_ACTIVITY", # This bit masks the R_ACTIVITY interrupt in IC_INTR_STAT register 0x00000080: "M_RX_DONE", # This bit masks the R_RX_DONE interrupt in IC_INTR_STAT register 0x00000040: "M_TX_ABRT", # This bit masks the R_TX_ABRT interrupt in IC_INTR_STAT register 0x00000020: "M_RD_REQ", # This bit masks the R_RD_REQ interrupt in IC_INTR_STAT register 0x00000010: "M_TX_EMPTY", # This bit masks the R_TX_EMPTY interrupt in IC_INTR_STAT register 0x00000008: "M_TX_OVER", # This bit masks the R_TX_OVER interrupt in IC_INTR_STAT register 0x00000004: "M_RX_FULL", # This bit masks the R_RX_FULL interrupt in IC_INTR_STAT register 0x00000002: "M_RX_OVER", # This bit masks the R_RX_OVER interrupt in IC_INTR_STAT register 0x00000001: "M_RX_UNDER", # This bit masks the R_RX_UNDER interrupt in IC_INTR_STAT register } I2C_IC_RAW_INTR_STAT = { 0x00001000: "RESTART_DET", # Indicates whether a RESTART condition has occurred on the I2C interface when... 0x00000800: "GEN_CALL", # Set only when a General Call address is received and it is acknowledged 0x00000400: "START_DET", # Indicates whether a START or RESTART condition has occurred on the I2C interface... 0x00000200: "STOP_DET", # Indicates whether a STOP condition has occurred on the I2C interface regardless... 0x00000100: "ACTIVITY", # This bit captures DW_apb_i2c activity and stays set until it is cleared 0x00000080: "RX_DONE", # When the DW_apb_i2c is acting as a slave-transmitter, this bit is set to 1 if the... 0x00000040: "TX_ABRT", # This bit indicates if DW_apb_i2c, as an I2C transmitter, is unable to complete the... 0x00000020: "RD_REQ", # This bit is set to 1 when DW_apb_i2c is acting as a slave and another I2C master is... 0x00000010: "TX_EMPTY", # The behavior of the TX_EMPTY interrupt status differs based on the TX_EMPTY_CTRL... 0x00000008: "TX_OVER", # Set during transmit if the transmit buffer is filled to IC_TX_BUFFER_DEPTH and the... 0x00000004: "RX_FULL", # Set when the receive buffer reaches or goes above the RX_TL threshold in the... 0x00000002: "RX_OVER", # Set if the receive buffer is completely filled to IC_RX_BUFFER_DEPTH and an... 0x00000001: "RX_UNDER", # Set if the processor attempts to read the receive buffer when it is empty by... } I2C_IC_RX_TL = { 0x000000FF: "RX_TL", # Receive FIFO Threshold Level } I2C_IC_TX_TL = { 0x000000FF: "TX_TL", # Transmit FIFO Threshold Level } I2C_IC_CLR_INTR = { 0x00000001: "CLR_INTR", # Read this register to clear the combined interrupt, all individual interrupts,... } I2C_IC_CLR_RX_UNDER = { 0x00000001: "CLR_RX_UNDER", # Read this register to clear the RX_UNDER interrupt (bit 0) of the... } I2C_IC_CLR_RX_OVER = { 0x00000001: "CLR_RX_OVER", # Read this register to clear the RX_OVER interrupt (bit 1) of the... } I2C_IC_CLR_TX_OVER = { 0x00000001: "CLR_TX_OVER", # Read this register to clear the TX_OVER interrupt (bit 3) of the... } I2C_IC_CLR_RD_REQ = { 0x00000001: "CLR_RD_REQ", # Read this register to clear the RD_REQ interrupt (bit 5) of the... } I2C_IC_CLR_TX_ABRT = { 0x00000001: "CLR_TX_ABRT", # Read this register to clear the TX_ABRT interrupt (bit 6) of the... } I2C_IC_CLR_RX_DONE = { 0x00000001: "CLR_RX_DONE", # Read this register to clear the RX_DONE interrupt (bit 7) of the... } I2C_IC_CLR_ACTIVITY = { 0x00000001: "CLR_ACTIVITY", # Reading this register clears the ACTIVITY interrupt if the I2C is not active anymore } I2C_IC_CLR_STOP_DET = { 0x00000001: "CLR_STOP_DET", # Read this register to clear the STOP_DET interrupt (bit 9) of the... } I2C_IC_CLR_START_DET = { 0x00000001: "CLR_START_DET", # Read this register to clear the START_DET interrupt (bit 10) of the... } I2C_IC_CLR_GEN_CALL = { 0x00000001: "CLR_GEN_CALL", # Read this register to clear the GEN_CALL interrupt (bit 11) of... } I2C_IC_ENABLE = { 0x00000004: "TX_CMD_BLOCK", # In Master mode: - 1'b1: Blocks the transmission of data on I2C bus even if Tx... 0x00000002: "ABORT", # When set, the controller initiates the transfer abort 0x00000001: "ENABLE", # Controls whether the DW_apb_i2c is enabled } I2C_IC_STATUS = { 0x00000040: "SLV_ACTIVITY", # Slave FSM Activity Status 0x00000020: "MST_ACTIVITY", # Master FSM Activity Status 0x00000010: "RFF", # Receive FIFO Completely Full 0x00000008: "RFNE", # Receive FIFO Not Empty 0x00000004: "TFE", # Transmit FIFO Completely Empty 0x00000002: "TFNF", # Transmit FIFO Not Full 0x00000001: "ACTIVITY", # I2C Activity Status } I2C_IC_TXFLR = { 0x0000001F: "TXFLR", # Transmit FIFO Level } I2C_IC_RXFLR = { 0x0000001F: "RXFLR", # Receive FIFO Level } I2C_IC_SDA_HOLD = { 0x00FF0000: "IC_SDA_RX_HOLD", # Sets the required SDA hold time in units of ic_clk period, when DW_apb_i2c... 0x0000FFFF: "IC_SDA_TX_HOLD", # Sets the required SDA hold time in units of ic_clk period, when DW_apb_i2c... } I2C_IC_TX_ABRT_SOURCE = { 0xFF800000: "TX_FLUSH_CNT", # This field indicates the number of Tx FIFO Data Commands which are flushed... 0x00010000: "ABRT_USER_ABRT", # This is a master-mode-only bit 0x00008000: "ABRT_SLVRD_INTX", # 1: When the processor side responds to a slave mode request for data to be... 0x00004000: "ABRT_SLV_ARBLOST", # This field indicates that a Slave has lost the bus while transmitting... 0x00002000: "ABRT_SLVFLUSH_TXFIFO", # This field specifies that the Slave has received a read command and... 0x00001000: "ARB_LOST", # This field specifies that the Master has lost arbitration, or if... 0x00000800: "ABRT_MASTER_DIS", # This field indicates that the User tries to initiate a Master operation... 0x00000400: "ABRT_10B_RD_NORSTRT", # This field indicates that the restart is disabled (IC_RESTART_EN bit... 0x00000200: "ABRT_SBYTE_NORSTRT", # To clear Bit 9, the source of the ABRT_SBYTE_NORSTRT must be fixed... 0x00000100: "ABRT_HS_NORSTRT", # This field indicates that the restart is disabled (IC_RESTART_EN bit... 0x00000080: "ABRT_SBYTE_ACKDET", # This field indicates that the Master has sent a START Byte and the START... 0x00000040: "ABRT_HS_ACKDET", # This field indicates that the Master is in High Speed mode and the High... 0x00000020: "ABRT_GCALL_READ", # This field indicates that DW_apb_i2c in the master mode has sent a General... 0x00000010: "ABRT_GCALL_NOACK", # This field indicates that DW_apb_i2c in master mode has sent a General... 0x00000008: "ABRT_TXDATA_NOACK", # This field indicates the master-mode only bit 0x00000004: "ABRT_10ADDR2_NOACK", # This field indicates that the Master is in 10-bit address mode and that... 0x00000002: "ABRT_10ADDR1_NOACK", # This field indicates that the Master is in 10-bit address mode and the... 0x00000001: "ABRT_7B_ADDR_NOACK", # This field indicates that the Master is in 7-bit addressing mode and... } I2C_IC_SLV_DATA_NACK_ONLY = { 0x00000001: "NACK", # Generate NACK } I2C_IC_DMA_CR = { 0x00000002: "TDMAE", # Transmit DMA Enable 0x00000001: "RDMAE", # Receive DMA Enable } I2C_IC_DMA_TDLR = { 0x0000000F: "DMATDL", # Transmit Data Level } I2C_IC_DMA_RDLR = { 0x0000000F: "DMARDL", # Receive Data Level } I2C_IC_SDA_SETUP = { 0x000000FF: "SDA_SETUP", # SDA Setup } I2C_IC_ACK_GENERAL_CALL = { 0x00000001: "ACK_GEN_CALL", # ACK General Call } I2C_IC_ENABLE_STATUS = { 0x00000004: "SLV_RX_DATA_LOST", # Slave Received Data Lost 0x00000002: "SLV_DISABLED_WHILE_BUSY", # Slave Disabled While Busy (Transmit, Receive) 0x00000001: "IC_EN", # ic_en Status } I2C_IC_FS_SPKLEN = { 0x000000FF: "IC_FS_SPKLEN", # I2C SS, FS or FM+ spike suppression limit } I2C_IC_CLR_RESTART_DET = { 0x00000001: "CLR_RESTART_DET", # Clear RESTART_DET Interrupt Register } I2C_IC_COMP_PARAM_1 = { 0x00FF0000: "TX_BUFFER_DEPTH", # TX Buffer Depth = 16 0x0000FF00: "RX_BUFFER_DEPTH", # RX Buffer Depth = 16 0x00000080: "ADD_ENCODED_PARAMS", # Encoded parameters not visible 0x00000040: "HAS_DMA", # DMA handshaking signals are enabled 0x00000020: "INTR_IO", # COMBINED Interrupt outputs 0x00000010: "HC_COUNT_VALUES", # Programmable count values for each mode 0x0000000C: "MAX_SPEED_MODE", # MAX SPEED MODE = FAST MODE 0x00000003: "APB_DATA_WIDTH", # APB data bus width is 32 bits } I2C_IC_COMP_VERSION = { 0xFFFFFFFF: "IC_COMP_VERSION", # IC_COMP_VERSION = 0x3230312a } I2C_IC_COMP_TYPE = { 0xFFFFFFFF: "IC_COMP_TYPE", # IC_COMP_TYPE = 0x44570140 (Designware Component Type number = 0x44_57_01_40) }