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Commit 74db68c1 authored by Andrey Filippov's avatar Andrey Filippov
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more on sensor i2c

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includes/x393_parameters.vh
View file @ 74db68c1
......@@ -346,18 +346,16 @@
// sensor_i2c_io relative control register addresses
parameter SENSI2C_CTRL = 'h0,
// Control register bits
parameter SENSI2C_CMD_TABLE = 29, // [29]: 1 - write to translation table (ignore any other fields), 0 - write other fields
parameter SENSI2C_CMD_TAND = 28, // [28]: 1 - write table address (8 bits), 0 - write table data (28 bits)
parameter SENSI2C_CMD_RESET = 14, // [14] reset all FIFO (takes 16 clock pulses), also - stops i2c until run command
parameter SENSI2C_CMD_RUN = 13, // [13:12]3 - run i2c, 2 - stop i2c (needed before software i2c), 1,0 - no change to run state
parameter SENSI2C_CMD_RUN_PBITS = 1,
parameter SENSI2C_CMD_BYTES = 11, // if 1, use [10:9] to set command bytes to send after slave address (0..3)
parameter SENSI2C_CMD_BYTES_PBITS = 2,
parameter SENSI2C_CMD_DLY = 8, // [7:0] - duration of quater i2c cycle (if 0, [3:0] control SCL+SDA)
parameter SENSI2C_CMD_DLY_PBITS = 8,
// direct control of SDA/SCL mutually exclusive with DLY control, disabled by running i2c
parameter SENSI2C_CMD_SCL = 16, // [17:16] : 0: NOP, 1: 1'b0->SCL, 2: 1'b1->SCL, 3: 1'bz -> SCL
parameter SENSI2C_CMD_SCL_WIDTH = 2,
parameter SENSI2C_CMD_SDA = 18, // [19:18] : 0: NOP, 1: 1'b0->SDA, 2: 1'b1->SDA, 3: 1'bz -> SDA,
parameter SENSI2C_CMD_SDA_WIDTH = 2,
parameter SENSI2C_CMD_FIFO_RD = 3, // advane I2C read data FIFO by 1
parameter SENSI2C_CMD_ACIVE = 2, // [2] - SENSI2C_CMD_ACIVE_EARLY0, SENSI2C_CMD_ACIVE_SDA
parameter SENSI2C_CMD_ACIVE_EARLY0 = 1, // release SDA==0 early if next bit ==1
parameter SENSI2C_CMD_ACIVE_SDA = 0, // drive SDA=1 during the second half of SCL=1
parameter SENSI2C_STATUS = 'h1,
......
sensor/sensor_channel.v
View file @ 74db68c1
......@@ -62,18 +62,16 @@ module sensor_channel#(
// sensor_i2c_io relative control register addresses
parameter SENSI2C_CTRL = 'h0,
// Control register bits
parameter SENSI2C_CMD_TABLE = 29, // [29]: 1 - write to translation table (ignore any other fields), 0 - write other fields
parameter SENSI2C_CMD_TAND = 28, // [28]: 1 - write table address (8 bits), 0 - write table data (28 bits)
parameter SENSI2C_CMD_RESET = 14, // [14] reset all FIFO (takes 16 clock pulses), also - stops i2c until run command
parameter SENSI2C_CMD_RUN = 13, // [13:12]3 - run i2c, 2 - stop i2c (needed before software i2c), 1,0 - no change to run state
parameter SENSI2C_CMD_RUN_PBITS = 1,
parameter SENSI2C_CMD_BYTES = 11, // if 1, use [10:9] to set command bytes to send after slave address (0..3)
parameter SENSI2C_CMD_BYTES_PBITS = 2,
parameter SENSI2C_CMD_DLY = 8, // [7:0] - duration of quater i2c cycle (if 0, [3:0] control SCL+SDA)
parameter SENSI2C_CMD_DLY_PBITS = 8,
// direct control of SDA/SCL mutually exclusive with DLY control, disabled by running i2c
parameter SENSI2C_CMD_SCL = 16, // [17:16] : 0: NOP, 1: 1'b0->SCL, 2: 1'b1->SCL, 3: 1'bz -> SCL
parameter SENSI2C_CMD_SCL_WIDTH = 2,
parameter SENSI2C_CMD_SDA = 18, // [19:18] : 0: NOP, 1: 1'b0->SDA, 2: 1'b1->SDA, 3: 1'bz -> SDA,
parameter SENSI2C_CMD_SDA_WIDTH = 2,
parameter SENSI2C_CMD_FIFO_RD = 3, // advane I2C read data FIFO by 1
parameter SENSI2C_CMD_ACIVE = 2, // [2] - SENSI2C_CMD_ACIVE_EARLY0, SENSI2C_CMD_ACIVE_SDA
parameter SENSI2C_CMD_ACIVE_EARLY0 = 1, // release SDA==0 early if next bit ==1
parameter SENSI2C_CMD_ACIVE_SDA = 0, // drive SDA=1 during the second half of SCL=1
parameter SENSI2C_STATUS = 'h1,
......@@ -486,17 +484,15 @@ module sensor_channel#(
.SENSI2C_CTRL (SENSI2C_CTRL),
.SENSI2C_STATUS (SENSI2C_STATUS),
.SENSI2C_STATUS_REG (SENSI2C_STATUS_REG),
.SENSI2C_CMD_TABLE (SENSI2C_CMD_TABLE),
.SENSI2C_CMD_TAND (SENSI2C_CMD_TAND),
.SENSI2C_CMD_RESET (SENSI2C_CMD_RESET),
.SENSI2C_CMD_RUN (SENSI2C_CMD_RUN),
.SENSI2C_CMD_RUN_PBITS (SENSI2C_CMD_RUN_PBITS),
.SENSI2C_CMD_BYTES (SENSI2C_CMD_BYTES),
.SENSI2C_CMD_BYTES_PBITS (SENSI2C_CMD_BYTES_PBITS),
.SENSI2C_CMD_DLY (SENSI2C_CMD_DLY),
.SENSI2C_CMD_DLY_PBITS (SENSI2C_CMD_DLY_PBITS),
.SENSI2C_CMD_SCL (SENSI2C_CMD_SCL),
.SENSI2C_CMD_SCL_WIDTH (SENSI2C_CMD_SCL_WIDTH),
.SENSI2C_CMD_SDA (SENSI2C_CMD_SDA),
.SENSI2C_CMD_SDA_WIDTH (SENSI2C_CMD_SDA_WIDTH),
.SENSI2C_CMD_FIFO_RD (SENSI2C_CMD_FIFO_RD),
.SENSI2C_CMD_ACIVE (SENSI2C_CMD_ACIVE),
.SENSI2C_CMD_ACIVE_EARLY0(SENSI2C_CMD_ACIVE_EARLY0),
.SENSI2C_CMD_ACIVE_SDA (SENSI2C_CMD_ACIVE_SDA),
.SENSI2C_DRIVE (SENSI2C_DRIVE),
.SENSI2C_IBUF_LOW_PWR (SENSI2C_IBUF_LOW_PWR),
.SENSI2C_IOSTANDARD (SENSI2C_IOSTANDARD),
......
sensor/sensor_i2c.v
View file @ 74db68c1
This diff is collapsed.
sensor/sensor_i2c_io.v
View file @ 74db68c1
......@@ -30,18 +30,16 @@ module sensor_i2c_io#(
parameter SENSI2C_STATUS = 'h1,
parameter SENSI2C_STATUS_REG = 'h20,
// Control register bits
parameter SENSI2C_CMD_TABLE = 29, // [29]: 1 - write to translation table (ignore any other fields), 0 - write other fields
parameter SENSI2C_CMD_TAND = 28, // [28]: 1 - write table address (8 bits), 0 - write table data (28 bits)
parameter SENSI2C_CMD_RESET = 14, // [14] reset all FIFO (takes 16 clock pulses), also - stops i2c until run command
parameter SENSI2C_CMD_RUN = 13, // [13:12]3 - run i2c, 2 - stop i2c (needed before software i2c), 1,0 - no change to run state
parameter SENSI2C_CMD_RUN_PBITS = 1,
parameter SENSI2C_CMD_BYTES = 11, // if 1, use [10:9] to set command bytes to send after slave address (0..3)
parameter SENSI2C_CMD_BYTES_PBITS = 2,
parameter SENSI2C_CMD_DLY = 8, // [7:0] - duration of quater i2c cycle (if 0, [3:0] control SCL+SDA)
parameter SENSI2C_CMD_DLY_PBITS = 8,
// direct control of SDA/SCL mutually exclusive with DLY control, disabled by running i2c
parameter SENSI2C_CMD_SCL = 16, // [17:16] : 0: NOP, 1: 1'b0->SCL, 2: 1'b1->SCL, 3: 1'bz -> SCL
parameter SENSI2C_CMD_SCL_WIDTH = 2,
parameter SENSI2C_CMD_SDA = 18, // [19:18] : 0: NOP, 1: 1'b0->SDA, 2: 1'b1->SDA, 3: 1'bz -> SDA,
parameter SENSI2C_CMD_SDA_WIDTH = 2,
parameter SENSI2C_CMD_FIFO_RD = 3, // advane I2C read data FIFO by 1
parameter SENSI2C_CMD_ACIVE = 2, // [2] - SENSI2C_CMD_ACIVE_EARLY0, SENSI2C_CMD_ACIVE_SDA
parameter SENSI2C_CMD_ACIVE_EARLY0 = 1, // release SDA==0 early if next bit ==1
parameter SENSI2C_CMD_ACIVE_SDA = 0, // drive SDA=1 during the second half of SCL=1
// I/O parameters
parameter integer SENSI2C_DRIVE = 12,
parameter SENSI2C_IBUF_LOW_PWR = "TRUE",
......@@ -75,17 +73,15 @@ module sensor_i2c_io#(
.SENSI2C_CTRL (SENSI2C_CTRL),
.SENSI2C_STATUS (SENSI2C_STATUS),
.SENSI2C_STATUS_REG (SENSI2C_STATUS_REG),
.SENSI2C_CMD_TABLE (SENSI2C_CMD_TABLE),
.SENSI2C_CMD_TAND (SENSI2C_CMD_TAND),
.SENSI2C_CMD_RESET (SENSI2C_CMD_RESET),
.SENSI2C_CMD_RUN (SENSI2C_CMD_RUN),
.SENSI2C_CMD_RUN_PBITS (SENSI2C_CMD_RUN_PBITS),
.SENSI2C_CMD_BYTES (SENSI2C_CMD_BYTES),
.SENSI2C_CMD_BYTES_PBITS (SENSI2C_CMD_BYTES_PBITS),
.SENSI2C_CMD_DLY (SENSI2C_CMD_DLY),
.SENSI2C_CMD_DLY_PBITS (SENSI2C_CMD_DLY_PBITS),
.SENSI2C_CMD_SCL (SENSI2C_CMD_SCL),
.SENSI2C_CMD_SCL_WIDTH (SENSI2C_CMD_SCL_WIDTH),
.SENSI2C_CMD_SDA (SENSI2C_CMD_SDA),
.SENSI2C_CMD_SDA_WIDTH (SENSI2C_CMD_SDA_WIDTH)
.SENSI2C_CMD_FIFO_RD (SENSI2C_CMD_FIFO_RD),
.SENSI2C_CMD_ACIVE (SENSI2C_CMD_ACIVE),
.SENSI2C_CMD_ACIVE_EARLY0(SENSI2C_CMD_ACIVE_EARLY0),
.SENSI2C_CMD_ACIVE_SDA (SENSI2C_CMD_ACIVE_SDA)
) sensor_i2c_i (
.mrst (mrst), // input
......
sensor/sensor_i2c_prot.v
View file @ 74db68c1
This diff is collapsed.
sensor/sensor_i2c_scl_sda.v
View file @ 74db68c1
......@@ -25,15 +25,19 @@ module sensor_i2c_scl_sda(
input mclk, // global clock
input i2c_rst,
input [ 7:0] i2c_dly, // bit duration-1 (>=2?), 1 unit - 4 mclk periods
input active_sda, // active pull SDA
input early_release_0,// release SDA immediately after end of SCL if next bit is 1 (for ACKN). Data hold time by slow 0->1
input snd_start,
input snd_stop,
input snd9,
// input rcv, // recieve mode (valid with snd9) - master receives, slave - sends
input [ 8:0] din,
output [ 8:0] dout, //
output reg dout_stb, // dout contains valid data
output reg scl, // i2c SCL signal
input sda_in, // i2c SDA signal form I/O pad
output reg sda, // i2c SDA signal
output reg sda_en, // drive SDA when SDA=0 and during second half of SCL = 0 interval (also during stop)
output ready, // ready to accept commands
output reg bus_busy, // i2c bus busy (1 cycle behind !ready)
output is_open // i2c channel is open (started, no stop yet)
......@@ -119,6 +123,14 @@ module sensor_i2c_scl_sda(
seq_start_restart[3] || seq_start_restart[2] ||
seq_stop[0] ||
(sr[8] && (|seq_bit));
if (rst) sda_en <= 1;
else if (first_cyc) sda_en <= busy_r && (
(active_sda && (seq_start_restart[3] || seq_stop[0] || (sr[8] && seq_bit[3]))) ||
(|seq_start_restart[1:0]) ||
(|seq_stop[2:1]) ||
(!sr[8] && (|seq_bit[3:1])) ||
(!sr[8] && seq_bit[0] && (!early_release_0 || !sr[7])));
bus_busy <= busy_r;
end
......
sensor/sensors393.v
View file @ 74db68c1
......@@ -54,17 +54,15 @@ module sensors393 #(
// sensor_i2c_io relative control register addresses
parameter SENSI2C_CTRL = 'h0,
// Control register bits
parameter SENSI2C_CMD_TABLE = 29, // [29]: 1 - write to translation table (ignore any other fields), 0 - write other fields
parameter SENSI2C_CMD_TAND = 28, // [28]: 1 - write table address (8 bits), 0 - write table data (28 bits)
parameter SENSI2C_CMD_RESET = 14, // [14] reset all FIFO (takes 16 clock pulses), also - stops i2c until run command
parameter SENSI2C_CMD_RUN = 13, // [13:12]3 - run i2c, 2 - stop i2c (needed before software i2c), 1,0 - no change to run state
parameter SENSI2C_CMD_RUN_PBITS = 1,
parameter SENSI2C_CMD_BYTES = 11, // if 1, use [10:9] to set command bytes to send after slave address (0..3)
parameter SENSI2C_CMD_BYTES_PBITS = 2,
parameter SENSI2C_CMD_DLY = 8, // [7:0] - duration of quater i2c cycle (if 0, [3:0] control SCL+SDA)
parameter SENSI2C_CMD_DLY_PBITS = 8,
parameter SENSI2C_CMD_SCL = 16, // [17:16] : 0: NOP, 1: 1'b0->SCL, 2: 1'b1->SCL, 3: 1'bz -> SCL
parameter SENSI2C_CMD_SCL_WIDTH = 2,
parameter SENSI2C_CMD_SDA = 18, // [19:18] : 0: NOP, 1: 1'b0->SDA, 2: 1'b1->SDA, 3: 1'bz -> SDA,
parameter SENSI2C_CMD_SDA_WIDTH = 2,
parameter SENSI2C_CMD_FIFO_RD = 3, // advane I2C read data FIFO by 1
parameter SENSI2C_CMD_ACIVE = 2, // [2] - SENSI2C_CMD_ACIVE_EARLY0, SENSI2C_CMD_ACIVE_SDA
parameter SENSI2C_CMD_ACIVE_EARLY0 = 1, // release SDA==0 early if next bit ==1
parameter SENSI2C_CMD_ACIVE_SDA = 0, // drive SDA=1 during the second half of SCL=1
parameter SENSI2C_STATUS = 'h1,
......@@ -379,17 +377,15 @@ module sensors393 #(
.SENSI2C_CTRL_RADDR (SENSI2C_CTRL_RADDR),
.SENSI2C_CTRL_MASK (SENSI2C_CTRL_MASK),
.SENSI2C_CTRL (SENSI2C_CTRL),
.SENSI2C_CMD_TABLE (SENSI2C_CMD_TABLE),
.SENSI2C_CMD_TAND (SENSI2C_CMD_TAND),
.SENSI2C_CMD_RESET (SENSI2C_CMD_RESET),
.SENSI2C_CMD_RUN (SENSI2C_CMD_RUN),
.SENSI2C_CMD_RUN_PBITS (SENSI2C_CMD_RUN_PBITS),
.SENSI2C_CMD_BYTES (SENSI2C_CMD_BYTES),
.SENSI2C_CMD_BYTES_PBITS (SENSI2C_CMD_BYTES_PBITS),
.SENSI2C_CMD_DLY (SENSI2C_CMD_DLY),
.SENSI2C_CMD_DLY_PBITS (SENSI2C_CMD_DLY_PBITS),
.SENSI2C_CMD_SCL (SENSI2C_CMD_SCL),
.SENSI2C_CMD_SCL_WIDTH (SENSI2C_CMD_SCL_WIDTH),
.SENSI2C_CMD_SDA (SENSI2C_CMD_SDA),
.SENSI2C_CMD_SDA_WIDTH (SENSI2C_CMD_SDA_WIDTH),
.SENSI2C_CMD_FIFO_RD (SENSI2C_CMD_FIFO_RD),
.SENSI2C_CMD_ACIVE (SENSI2C_CMD_ACIVE),
.SENSI2C_CMD_ACIVE_EARLY0 (SENSI2C_CMD_ACIVE_EARLY0),
.SENSI2C_CMD_ACIVE_SDA (SENSI2C_CMD_ACIVE_SDA),
.SENSI2C_STATUS (SENSI2C_STATUS),
.SENS_GAMMA_RADDR (SENS_GAMMA_RADDR),
.SENS_GAMMA_ADDR_MASK (SENS_GAMMA_ADDR_MASK),
......
x393.v
View file @ 74db68c1
......@@ -1422,17 +1422,15 @@ assign axi_grst = axi_rst_pre;
.SENSI2C_CTRL_RADDR (SENSI2C_CTRL_RADDR),
.SENSI2C_CTRL_MASK (SENSI2C_CTRL_MASK),
.SENSI2C_CTRL (SENSI2C_CTRL),
.SENSI2C_CMD_TABLE (SENSI2C_CMD_TABLE),
.SENSI2C_CMD_TAND (SENSI2C_CMD_TAND),
.SENSI2C_CMD_RESET (SENSI2C_CMD_RESET),
.SENSI2C_CMD_RUN (SENSI2C_CMD_RUN),
.SENSI2C_CMD_RUN_PBITS (SENSI2C_CMD_RUN_PBITS),
.SENSI2C_CMD_BYTES (SENSI2C_CMD_BYTES),
.SENSI2C_CMD_BYTES_PBITS (SENSI2C_CMD_BYTES_PBITS),
.SENSI2C_CMD_DLY (SENSI2C_CMD_DLY),
.SENSI2C_CMD_DLY_PBITS (SENSI2C_CMD_DLY_PBITS),
.SENSI2C_CMD_SCL (SENSI2C_CMD_SCL),
.SENSI2C_CMD_SCL_WIDTH (SENSI2C_CMD_SCL_WIDTH),
.SENSI2C_CMD_SDA (SENSI2C_CMD_SDA),
.SENSI2C_CMD_SDA_WIDTH (SENSI2C_CMD_SDA_WIDTH),
.SENSI2C_CMD_FIFO_RD (SENSI2C_CMD_FIFO_RD),
.SENSI2C_CMD_ACIVE (SENSI2C_CMD_ACIVE),
.SENSI2C_CMD_ACIVE_EARLY0 (SENSI2C_CMD_ACIVE_EARLY0),
.SENSI2C_CMD_ACIVE_SDA (SENSI2C_CMD_ACIVE_SDA),
.SENSI2C_STATUS (SENSI2C_STATUS),
.SENS_SYNC_RADDR (SENS_SYNC_RADDR),
.SENS_SYNC_MASK (SENS_SYNC_MASK),
......
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