You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
198 lines
6.0 KiB
198 lines
6.0 KiB
5 years ago
|
|
||
|
|
module top (input CLK, output [2:0] DBG_LED, output DBG_TX, input I2C_SCL, inout I2C_SDA, inout INTERRUPT, inout [33:0] KBD_RC,
|
||
|
|
output NUM_LOCK, output CAPS_LOCK, output SCROOL_LOCK);
|
||
|
|
|
||
|
|
|
||
|
|
//parameter INTERRUPT_TMR_REFLESH = 14; // 14 - 2^14=16384 tacts or 1.37 ms, 19 - 2^19=524288 tacts or 43.7 ms, 23 - 2^23=8388608 tacts or 0.7 s
|
||
|
|
// 23 - 1119 LCs, 14 - 1081 LCs (in commit 1b6fc60221b595c2a0f69509d29b6e5c3110feb0)
|
||
|
|
|
||
|
|
// reg [21:0] tact_counter_2ms = 0;
|
||
|
|
// reg [5:0] ms_counter = 0;
|
||
|
|
// reg [7:0] s_counter = 0;
|
||
|
|
reg [16:0] tact_counter;
|
||
|
|
reg [5:0] rc_counter;
|
||
|
|
|
||
|
|
reg [33:0] KBD_RC_OUT = 0;
|
||
|
|
reg [33:0] KBD_RC_EN = 1;
|
||
|
|
wire [33:0] KBD_RC_IN;
|
||
|
|
|
||
|
|
// reg [5:0] i;
|
||
|
|
|
||
|
|
reg [33:0] com_msg;
|
||
|
|
reg com_en;
|
||
|
|
|
||
|
|
wire RESET;
|
||
|
|
reg [3:0] rststate = 0;
|
||
|
|
assign RESET = &rststate;
|
||
|
|
|
||
|
|
reg UART_WR, UART_DTR, UART_RTS, UART_DCD;//, UART_WR2;
|
||
|
|
reg [7:0] UART_TX_DATA;
|
||
|
|
wire UART_ACTIVE, UART_TX_LINE;
|
||
|
|
uart UART (CLK, RESET, UART_WR, UART_TX_DATA, UART_ACTIVE, UART_TX_LINE);
|
||
|
|
|
||
|
|
reg [2:0] dbg_led = 0;
|
||
|
|
|
||
|
|
always @(posedge CLK) begin
|
||
|
|
|
||
|
|
// RESET LOGIC
|
||
|
|
rststate <= rststate + !RESET;
|
||
|
|
if (RESET == 0) begin
|
||
|
|
tact_counter_2ms = 0;
|
||
|
|
ms_counter = 0;
|
||
|
|
s_counter = 0;
|
||
|
|
dbg_led = 1;
|
||
|
|
com_msg[5:0] = 63;
|
||
|
|
com_len = 1;
|
||
|
|
com_en = 0;
|
||
|
|
end
|
||
|
|
|
||
|
|
// NOT RESET MODE LOGIC
|
||
|
|
else begin
|
||
|
|
if (tact_counter == 0)
|
||
|
|
KBD_RC_EN = 1 << rc_counter;
|
||
|
|
tact_counter = tact_counter + 1;
|
||
|
|
if (tact_counter == 120000) begin
|
||
|
|
tact_counter = 0;
|
||
|
|
if ((KBD_RC_IN | KBD_RC_EN) != 34'h 3FFFFFFFF) begin
|
||
|
|
com_msg = KBD_RC_IN ^ (34'h 3FFFFFFFF);
|
||
|
|
com_en = 1;
|
||
|
|
end
|
||
|
|
else
|
||
|
|
com_en = 0;
|
||
|
|
rc_counter = rc_counter + 1;
|
||
|
|
if (rc_counter == 33) begin
|
||
|
|
rc_counter = 0;
|
||
|
|
dbg_led[1:0] <= dbg_led[2:1];
|
||
|
|
dbg_led[2] <= dbg_led[0];
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
if (tact_counter[10:0] == 0) begin
|
||
|
|
if (com_en) begin
|
||
|
|
case (tact_counter[14:11])
|
||
|
|
0: UART_TX_DATA = 255;
|
||
|
|
1: UART_TX_DATA[1:0] = com_msg[33:32];
|
||
|
|
2: UART_TX_DATA = com_msg[31:24];
|
||
|
|
3: UART_TX_DATA = com_msg[23:16];
|
||
|
|
4: UART_TX_DATA = com_msg[15:8];
|
||
|
|
5: UART_TX_DATA = com_msg[7:0];
|
||
|
|
endcase;
|
||
|
|
if (tact_counter[14:11] == 1)
|
||
|
|
UART_TX_DATA[7:2] = 0;
|
||
|
|
if (tact_counter[14:11] == 5)
|
||
|
|
com_en = 0;
|
||
|
|
UART_WR = 1;
|
||
|
|
end
|
||
|
|
else if ((tact_counter[16:14] == 1) && (rc_counter == 0) && (tact_counter[13:11] < 6)) begin
|
||
|
|
case (tact_counter[13:11])
|
||
|
|
0: UART_TX_DATA = 255;
|
||
|
|
1: UART_TX_DATA = 0;
|
||
|
|
2: UART_TX_DATA = 0;
|
||
|
|
3: UART_TX_DATA = 0;
|
||
|
|
4: UART_TX_DATA = 0;
|
||
|
|
5: UART_TX_DATA = 0;
|
||
|
|
endcase;
|
||
|
|
UART_WR = 1;
|
||
|
|
end
|
||
|
|
end
|
||
|
|
else if (tact_counter[10:0] == 2)
|
||
|
|
UART_WR = 0;
|
||
|
|
// //tact_counter_2ms = tact_counter_2ms + 1;
|
||
|
|
// if (tact_counter_2ms == 3999999) begin
|
||
|
|
// tact_counter_2ms = 0;
|
||
|
|
// ms_counter = ms_counter + 1;
|
||
|
|
// if (ms_counter == 0)
|
||
|
|
// dbg_led = dbg_led ^ 7;
|
||
|
|
// end
|
||
|
|
// else
|
||
|
|
// tact_counter_2ms = tact_counter_2ms + 1;
|
||
|
|
//
|
||
|
|
// if ((tact_counter_2ms == 3999999) && (ms_counter < 33)) begin
|
||
|
|
// if (KBD_RC_IN != 34'h 3FFFF) begin
|
||
|
|
// if (com_len == 1) begin
|
||
|
|
// com_msg[11:6] = ms_counter;
|
||
|
|
// com_len = com_len + 1;
|
||
|
|
// // for (i = 0; i < 34; i = i + 1) begin
|
||
|
|
// // if (KBD_RC_IN[i] == 0) begin
|
||
|
|
// // if (com_len != 7) begin
|
||
|
|
// // com_msg[(com_len*6+5):(com_len*6)] = i;
|
||
|
|
// // com_len = com_len + 1;
|
||
|
|
// // end
|
||
|
|
// // else
|
||
|
|
// // com_msg[47:42] = 62;
|
||
|
|
// // end
|
||
|
|
// // end
|
||
|
|
// end
|
||
|
|
// end
|
||
|
|
// end
|
||
|
|
//
|
||
|
|
// if (ms_counter == 34) begin
|
||
|
|
// if ((tact_counter_2ms & 2047) == 0) begin
|
||
|
|
// if (com_len != 1) begin
|
||
|
|
// if (tact_counter_2ms[13:11] < com_len) begin
|
||
|
|
// UART_TX_DATA[5:0] = com_msg[(6 * tact_counter_2ms[13:11] + 5) : (6 * tact_counter_2ms[13:11] + 0)];
|
||
|
|
// end
|
||
|
|
// end
|
||
|
|
// end
|
||
|
|
// else if ((tact_counter_2ms & 2047) == 1024)
|
||
|
|
// UART_WR = 0;
|
||
|
|
// // if ((tact_counter_2ms % 1200) == 0) begin
|
||
|
|
// // i = tact_counter_2ms / 1200;
|
||
|
|
// // if (com_len != 1) begin
|
||
|
|
// // if (i < com_len) begin
|
||
|
|
// // UART_TX_DATA[5:0] = com_msg[(6 * i + 5) : (6 * i + 0)];
|
||
|
|
// // UART_WR = 1;
|
||
|
|
// // end
|
||
|
|
// // end
|
||
|
|
// // end
|
||
|
|
// // else if ((tact_counter_2ms % 1200) == 600)
|
||
|
|
// // UART_WR = 0;
|
||
|
|
// end
|
||
|
|
//
|
||
|
|
// if (ms_counter == 35)
|
||
|
|
// com_len = 1;
|
||
|
|
//
|
||
|
|
// if (ms_counter < 33)
|
||
|
|
// KBD_RC_EN = 1 << ms_counter;
|
||
|
|
// else
|
||
|
|
// KBD_RC_EN = 0;
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
assign DBG_LED = dbg_led;//tact_counter_2ms[21:19];
|
||
|
|
assign NUM_LOCK = dbg_led[0];
|
||
|
|
assign CAPS_LOCK = dbg_led[1];
|
||
|
|
assign SCROOL_LOCK = dbg_led[2];
|
||
|
|
//assign DBG_LED[2] = KBD_RC_IN[23];
|
||
|
|
assign DBG_TX = UART_TX_LINE;
|
||
|
|
// assign LED5 = I2C_TRANS;
|
||
|
|
// //assign LED5 = COM_RX;
|
||
|
|
// assign LED1 = INT ^ 1;//KBD_COLUMNS[0];//I2C_OUTPUT_TYPE[0];//I2C_RX[0];
|
||
|
|
// //assign LED2 = I2C_OUTPUT_TYPE[0];
|
||
|
|
// //assign LED3 = I2C_OUTPUT_TYPE[1];
|
||
|
|
// assign LED2 = KBD_LED_STATUS[0];
|
||
|
|
// assign LED3 = KBD_LED_STATUS[1];
|
||
|
|
// assign LED4 = KBD_LED_STATUS[2];//KBD_FREEZE;//UART_ACTIVE;
|
||
|
|
// //assign LED3 = UART_ACTIVE;
|
||
|
|
// //assign LED4 = uart_double_ff;
|
||
|
|
// //assign ACK = I2C_READ;//I2C_WR; //I2C_ACK;
|
||
|
|
// //assign LED2 = KBD_DBG;
|
||
|
|
//
|
||
|
|
// assign COM_TX = UART_TX_LINE;//COM_RX;
|
||
|
|
// //assign INTERRUPT = INT;
|
||
|
|
// assign COM_RTS = I2C_READ;//UART_RTS;
|
||
|
|
// assign COM_DSR = KBD_FREEZE;//UART_DTR;
|
||
|
|
// assign COM_DCD = INT;
|
||
|
|
|
||
|
|
SB_IO #(
|
||
|
|
.PIN_TYPE(6'b 1010_01),
|
||
|
|
.PULLUP(1'b 1)
|
||
|
|
) kbd_rc_io [33:0] (
|
||
|
|
.PACKAGE_PIN(KBD_RC),
|
||
|
|
.OUTPUT_ENABLE(KBD_RC_EN),
|
||
|
|
.D_OUT_0(KBD_RC_OUT),
|
||
|
|
.D_IN_0(KBD_RC_IN)
|
||
|
|
);
|
||
|
|
|
||
|
|
endmodule //top
|