use UART to transmit data out and plot wave using python for HSADC performance testing (working well @75MHz)

Core/Src/User/fpga.c

@@ -106,7 +106,7 @@ void fsmc_read(uint16_t address, uint8_t *dat)
     *dat |= (uint8_t)HAL_GPIO_ReadPin(FSMC_D7_GPIO_Port, FSMC_D7_Pin) << 7;
 
     HAL_GPIO_WritePin(FSMC_NOE_GPIO_Port, FSMC_NOE_Pin, GPIO_PIN_RESET);
-    HAL_Delay(1);
+    // HAL_Delay(1);
     HAL_GPIO_WritePin(FSMC_NOE_GPIO_Port, FSMC_NOE_Pin, GPIO_PIN_SET);
     HAL_GPIO_WritePin(FSMC_NE1_GPIO_Port, FSMC_NE1_Pin, GPIO_PIN_SET);
 }
@@ -157,7 +157,7 @@ void fsmc_write(uint16_t address, uint8_t dat)
     HAL_GPIO_WritePin(FSMC_D7_GPIO_Port, FSMC_D7_Pin, (dat >> 7) & 0x01);
 
     HAL_GPIO_WritePin(FSMC_NWE_GPIO_Port, FSMC_NWE_Pin, GPIO_PIN_RESET);
-    HAL_Delay(1);
+    // HAL_Delay(1);
     HAL_GPIO_WritePin(FSMC_NWE_GPIO_Port, FSMC_NWE_Pin, GPIO_PIN_SET);
     HAL_GPIO_WritePin(FSMC_NE1_GPIO_Port, FSMC_NE1_Pin, GPIO_PIN_SET);
 }

Core/Src/User/user_main.c

@@ -12,13 +12,14 @@ void user_setup()
     HAL_TIM_Base_Start_IT(&htim4);
     HAL_TIM_Base_Start(&htim3);
     eem_power_init();
-    uint8_t str[10] = "test";
+    uint8_t str[10] = "start";
-    HAL_UART_Transmit(&huart4, str, 5, 100);
+    HAL_UART_Transmit(&huart4, str, 6, 100);
 }
 
 uint8_t dio_ch = 0;
 uint8_t dio_io = 0;
 uint8_t adc_sample = 0;
+uint16_t fsmc_add = 0;
 void user_loop()
 {
     if (adc_sample)
@@ -33,13 +34,24 @@ void user_loop()
     {
         fsmc_write_buf = (dio_io & 0x01) | ((dio_ch & 0x03) << 1);
         fsmc_write(fsmc_write_buf, 0);
-        uint16_t add = 0;
+        fsmc_add = 0;
-        while (add < ADC_SAMPLE_NUM)
+        while (fsmc_add < ADC_SAMPLE_NUM)
         {
-            fsmc_read(add, (uint8_t*)(adc_result + add));
+            fsmc_read(fsmc_add, (uint8_t*)(adc_result + fsmc_add));
-            add++;
+            fsmc_add++;
         }
+        // HAL_UART_Transmit(&huart4, "test0", 6, 100);
+        HAL_UART_Transmit(&huart4, (uint8_t*)adc_result, ADC_SAMPLE_NUM, 10000);
     }
     // HAL_Delay(1000);
-    key_events();
+    // key_events();
+    if (HAL_GPIO_ReadPin(KEY_GPIO_Port, KEY_Pin) == GPIO_PIN_RESET)
+    {
+        HAL_Delay(50);
+        if (HAL_GPIO_ReadPin(KEY_GPIO_Port, KEY_Pin) == GPIO_PIN_RESET)
+        {
+            adc_sample = 1;
+            while (HAL_GPIO_ReadPin(KEY_GPIO_Port, KEY_Pin) == GPIO_PIN_RESET);
+        }
+    }
 }

FPGA/top.v

@@ -36,7 +36,7 @@ module top (
     SB_PLL40_CORE #(.FEEDBACK_PATH("SIMPLE"),
                     .PLLOUT_SELECT("GENCLK"),
                     .DIVR(4'd0),
-                    .DIVF(7'd1),  
+                    .DIVF(7'd2),  
                     .DIVQ(3'd0),  //12MHz * (DIVF+1) / 2^DIVQ / (DIVR+1)
 
                     .FILTER_RANGE(3'b001),  // wfm without PLL is broken
@@ -65,6 +65,7 @@ module top (
                 ram_pointer++;
             end
             else begin
+                // adc_status[0] = 1'b0;
                 adc_status[1] = 1'b1;
                 ram_pointer = 0;
             end
@@ -92,7 +93,7 @@ module top (
     end 
 
     // assign FSMC_DAT = FSMC_RE ? fsmc_buf : 8'hzz;
-    assign FSMC_CLK = adc_status[0];
+    // assign FSMC_CLK = adc_status[0];
     assign FSMC_NWAIT = adc_status[1];
     assign LED = adc_status[1];
     

Makefile

@@ -1,5 +1,5 @@
 ##########################################################################################################################
-# File automatically-generated by tool: [projectgenerator] version: [3.15.2] date: [Sat Jan 15 15:39:31 HKT 2022] 
+# File automatically-generated by tool: [projectgenerator] version: [3.15.2] date: [Sat Jan 15 17:32:43 HKT 2022] 
 ##########################################################################################################################
 
 # ------------------------------------------------

plot_adc.py

@@ -0,0 +1,14 @@
+length = 16384
+
+import serial
+import numpy as np
+import matplotlib.pyplot as plt
+ser = serial.Serial('/dev/ttyUSB0', 115200, timeout=None)
+buffer = ser.read(length);
+data = []
+for i in range(length):
+    data.append(np.int8(buffer[i]))
+# print(data)
+plt.plot(data)
+plt.show()
+ser.close()