Verilog，不能分配多个值
我是Verilog新手，我正在尝试制作一个CPLD加电保护逻辑，它实际上使用了一组定时器来验证状态机。我有一个带有1Mhz OSC的CPLD，我正在尝试制作一个15s定时器，我计算代码，但它有编译错误，说“不能分配多个值”。我知道这意味着信号网络由两个不同的信号控制，但它有一条错误线显示 错误（12014）：扇出到“计时器[0]”的净“五十秒设备时钟输入”不能分配多个值 错误（12015）：网络由“clk_div:d | clk_out”馈送 错误（12015）：网络由“五十秒设备时钟输入”馈电Verilog，不能分配多个值,verilog,Verilog,我是Verilog新手，我正在尝试制作一个CPLD加电保护逻辑，它实际上使用了一组定时器来验证状态机。我有一个带有1Mhz OSC的CPLD，我正在尝试制作一个15s定时器，我计算代码，但它有编译错误，说“不能分配多个值”。我知道这意味着信号网络由两个不同的信号控制，但它有一条错误线显示 错误（12014）：扇出到“计时器[0]”的净“五十秒设备时钟输入”不能分配多个值 错误（12015）：网络由“clk_div:d | clk_out”馈送 错误（12015）：网络由“五十秒设备时钟输入”馈电
为什么“五十秒设备时钟输入”连接到自身？？ module PowerUpProtection(
//---------------------------------------------------------------------------
// Inputs
//---------------------------------------------------------------------------
input wire Fifty_m_second_Devide_Clock_input,
input wire Clock,
input wire Reset,
input wire Input1_Check_precharge_status,
input wire Input2_MainPowerSwitch_relay_status_Check,
input wire Input3_powerUp_validation,
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// Outputs
//---------------------------------------------------------------------------
output reg Output1_Relay_Swtich_For_Main_PowerSource,
output reg Output2_Switch_On_and_Charge_CAP,
output reg Output3_Switch_On_and_power_SoM,
output reg Output4_Press_and_hold_the_powerSource,
output reg Output5_Switch_on_relay_when_CPLD_powerup
//---------------------------------------------------------------------------
);
// this is a Module Instantiation, connect the inputs and output from different module within CPLD.
clk_div d(
.Clock (Clock),
.reset(Reset),
.clk_out(Fifty_m_second_Devide_Clock_input)
);
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// State Encoding
//---------------------------------------------------------------------------
localparam STATE_0_Initial = 4'd0,
STATE_1_Press_and_hold = 4'd1,
STATE_2_Power_up = 4'd2,
STATE_3_Check_Switches = 4'd3,
STATE_4_SwtichSafe_StartPreCharging = 4'd4,
STATE_5_ERROR = 4'd5,
STATE_6_CAP_is_Charging = 4'd6,
STATE_7_Charging_End_SwitchOn_MainPower = 4'd7,
STATE_8_PowerSupply_Ready = 4'd8,
ERROR_9_TIME_OUT = 4'd9,
STATE_10_Precharge_Switch_is_broken = 4'd10,
STATE_11_Main_power_switch_is_broken = 4'd11,
STATE_12_Both_switches_are_broken = 4'd12,
STATE_13_PlaceHolder = 4'd13,
STATE_14_PlaceHolder = 4'd14,
STATE_15_PlaceHolder = 4'd15;
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// State reg Declarations
//---------------------------------------------------------------------------
reg [3:0] CurrentState = 4'd0;
reg [3:0] NextState = 4'd0;
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// Timer reg Declarations
//---------------------------------------------------------------------------
reg [8:0] Timer = 0;
reg enable_the_counter = 0; // the boolean to enbale the counter.
reg clear_the_counter = 0;
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// Outputs
//---------------------------------------------------------------------------
always@(*) begin
// clear for the initial state.
reg Output1_Relay_Swtich_For_Main_PowerSource = 0;
reg Output2_Switch_On_and_Charge_CAP = 0;
reg Output3_Switch_On_and_power_SoM = 0;
reg Output4_Press_and_hold_the_powerSource = 0;
reg Output5_Switch_on_relay_when_CPLD_powerup = 0;
case (CurrentState)
STATE_1_Press_and_hold : begin
Output4_Press_and_hold_the_powerSource = 1;
end
STATE_2_Power_up : begin
Output5_Switch_on_relay_when_CPLD_powerup = 1;
end
STATE_3_Check_Switches : begin
Output2_Switch_On_and_Charge_CAP = 1;
end
STATE_4_SwtichSafe_StartPreCharging : begin
Output2_Switch_On_and_Charge_CAP = 1;
end
STATE_5_ERROR : begin
// to be determined
end
STATE_6_CAP_is_Charging : begin
// wait for the charging to be complete
end
STATE_7_Charging_End_SwitchOn_MainPower : begin
Output1_Relay_Swtich_For_Main_PowerSource =1;
end
STATE_8_PowerSupply_Ready : begin
Output5_Switch_on_relay_when_CPLD_powerup = 0;
Output3_Switch_On_and_power_SoM = 1;
end
endcase
end
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// Synchronous State-Transition always@(posedge Clock) block
//---------------------------------------------------------------------------
always@(posedge Clock) begin
if (Reset) CurrentState <= STATE_0_Initial;
else CurrentState <= NextState;
end
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// conditional State-Trasnsition Always@(*) block
//---------------------------------------------------------------------------
always@(*) begin
NextState = CurrentState;
case (CurrentState)
STATE_0_Initial :begin
NextState = STATE_1_Press_and_hold;
end
STATE_1_Press_and_hold : begin
if (Input3_powerUp_validation) NextState = STATE_2_Power_up;
end
STATE_2_Power_up : begin
if (Input3_powerUp_validation) NextState = STATE_3_Check_Switches;
end
STATE_3_Check_Switches : begin
if (Input1_Check_precharge_status == 0 && Input2_MainPowerSwitch_relay_status_Check == 1 )
begin
NextState = STATE_4_SwtichSafe_StartPreCharging;
enable_the_counter = 1; //Start to count the time.
end
else if (Input1_Check_precharge_status == 1 && Input2_MainPowerSwitch_relay_status_Check == 1)
begin
NextState = STATE_10_Precharge_Switch_is_broken;
end
else if (Input1_Check_precharge_status == 0 && Input2_MainPowerSwitch_relay_status_Check == 0)
begin
NextState = STATE_11_Main_power_switch_is_broken;
end
else
begin
NextState = STATE_12_Both_switches_are_broken;
end
end
STATE_4_SwtichSafe_StartPreCharging : begin
if (Input1_Check_precharge_status == 1 && Timer <= 300) //equals to 15 seconds
NextState = STATE_6_CAP_is_Charging;
else if (Timer > 300)
NextState = STATE_5_ERROR; //Time out Error
clear_the_counter = 1;
enable_the_counter = 0;
end
STATE_6_CAP_is_Charging : begin
if (Input1_Check_precharge_status == 0 && Timer <= 300)
begin
NextState = STATE_7_Charging_End_SwitchOn_MainPower;
clear_the_counter = 1; // timer is over, clear the counter.
enable_the_counter =0;
end
else if (Timer > 300)
begin
NextState = STATE_5_ERROR; //Time out Error
clear_the_counter = 1;
enable_the_counter = 0;
end
end
STATE_7_Charging_End_SwitchOn_MainPower : begin
//enable the counter again, and count for 50 m seconds.
enable_the_counter = 1;
if (Input2_MainPowerSwitch_relay_status_Check ==1)
begin
if (Timer <=1)
NextState = STATE_7_Charging_End_SwitchOn_MainPower; // if time is not 50 ms yet, go back to itself current state
else
NextState = STATE_5_ERROR; //Time out Error
clear_the_counter = 1;
enable_the_counter = 0;
end
else if (Input2_MainPowerSwitch_relay_status_Check == 0) // if the switch is ready right away, that is best.
begin
NextState = STATE_8_PowerSupply_Ready;
end
else
NextState = STATE_5_ERROR; //Time out Error
clear_the_counter = 1;
enable_the_counter = 0;
end
//---------------------------------------------------------------------------
// Place-Holder transition.
//---------------------------------------------------------------------------
STATE_13_PlaceHolder : begin
NextState = STATE_5_ERROR;
end
STATE_14_PlaceHolder : begin
NextState = STATE_5_ERROR;
end
STATE_15_PlaceHolder : begin
NextState = STATE_5_ERROR;
end
endcase
end
//---------------------------------------------------------------------------
// 50 m Seconds counter block, make the osc into 20 HZ by implement the counter
//---------------------------------------------------------------------------
always@(posedge Fifty_m_second_Devide_Clock_input or posedge Reset or posedge clear_the_counter ) begin
if (Reset == 1 || clear_the_counter == 1)
begin
Timer = 0;
end
else
begin
if (enable_the_counter)
Timer <= Timer + 1'b1;
end
end
//---------------------------------------------------------------------------
endmodule
//clock devider, the board has a 10 M hz osc,
//so I create this code to count 200000 times
//for each posedge and that equalle to 50 m-second.
// if count until 50 m-second, this clk_out will output one positive edge.
module clk_div(
input Clock,
input reset,
output reg clk_out
);
parameter diver = 99999;
reg [23:0] count;//just for 99999 or warning
always@(posedge Clock or posedge reset)
begin
if(reset)
begin
count <= 0;
clk_out <= 1'b0;
end
else if(count == diver)
begin
clk_out <= ~clk_out;
count <= 0;
end
else
begin
count <= count + 1'b1;
end
end
endmodule
模块电源保护(
//---------------------------------------------------------------------------
//投入
//---------------------------------------------------------------------------
输入线五十毫秒设备时钟输入，
输入线时钟，
输入线复位，
输入线输入1检查预充电状态，
输入线输入2\u主电源开关\u继电器\u状态\u检查，
输入线输入3\u通电\u验证，
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
//输出
//---------------------------------------------------------------------------
主电源的输出reg Output1继电器开关，
输出寄存器输出2开关打开和充电上限，
输出reg Output3_开关_打开_和_电源_SoM，
output reg Output4\u按下并按住电源，
CPLD通电时，继电器上的输出reg Output5开关
//---------------------------------------------------------------------------
);
//这是一个模块实例化，连接CPLD内不同模块的输入和输出。
钟楼分区d(
.时钟（时钟），
.重置（重置），
.时钟输出（五十秒设备时钟输入）
);
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
//状态编码
//---------------------------------------------------------------------------
localparam STATE_0_Initial=4'd0，
状态1按下并保持=4'd1，
状态2加电=4'd2，
状态检查开关=4'd3，
状态4安全启动保护=4'd4，
状态_5_错误=4'd5，
状态为充电=4'd6，
状态\u 7 \u充电\u结束\u接通\u主电源=4'd7，
状态_8_电源_就绪=4'd8，
错误\u 9\u超时=4'd9，
状态\u 10 \u预充电\u开关\u断开=4'd10，
状态11主电源开关断开=4'd11，
状态\u 12 \u两个\u开关\u断开=4'd12，
状态_13_占位符=4'd13，
状态_14_占位符=4'd14，
状态_15_占位符=4'd15；
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
//州注册声明
//---------------------------------------------------------------------------
reg[3:0]当前状态=4'd0；
reg[3:0]NextState=4'd0；
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
//计时器reg声明
//---------------------------------------------------------------------------
reg[8:0]定时器=0；
reg enable___计数器=0；//布尔值用于启用计数器。
reg clear___计数器=0；
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
//输出
//---------------------------------------------------------------------------
始终@（*）开始
//清除初始状态。
主电源的reg Output1继电器开关=0；
reg Output2开关打开，充电上限=0；
reg Output3_开关_打开_和_电源_SoM=0；
reg Output4\u按下并按住电源=0；
当CPLD通电=0时，reg Output5开关打开继电器；
案例（当前状态）
状态1按下并保持：开始
输出4_按下并保持电源=1；
结束
状态2加电：开始
当CPLD加电=1时，继电器上的输出5开关；
结束
状态3检查开关：开始
输出2打开开关，充电上限=1；
结束
国家安全局启动计划：开始
输出2打开开关，充电上限=1；
结束
状态_5_错误：开始
//待定
结束
状态6\u CAP\u正在充电：开始
//等待充电完成
结束
状态\u 7 \u充电\u结束\u打开\u主电源：开始
主电源的输出1继电器开关=1；
结束
状态\u 8\u电源供应\u准备就绪：开始
当CPLD通电=0时，继电器上的输出5开关；
输出3_开关_打开_和_电源_SoM=1；
结束
尾声
结束
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
//同步状态转换始终@（posedge时钟）块
//---------------------------------------------------------------------------
始终@（posedge时钟）开始
如果（重置）电流