Added AD/DA test code.

Signed-off-by: Yilin Sun <imi415@imi.moe>

CMakeLists.txt

@@ -43,6 +43,7 @@ set(TARGET_SOURCES
     "SDK/middlewares/i2c_application_library/i2c_application.c"
     "board/at32f435_437_board.c"
     "board/at32f435_437_clock.c"
+    "src/app_adc.c"
     "src/app_ate_impl.c"
     "src/main.c"
 )

include/app_adc.h

@@ -0,0 +1,9 @@
+#ifndef APP_ADC_H
+#define APP_ADC_H
+
+#include <stdint.h>
+
+void app_adc_init(void);
+uint16_t app_adc_read(void);
+
+#endif  // APP_ADC_H

src/app_adc.c

@@ -0,0 +1,69 @@
+#include "at32f435_437_board.h"
+
+/* App */
+#include "app_adc.h"
+
+void app_adc_init(void) {
+    crm_periph_clock_enable(CRM_GPIOB_PERIPH_CLOCK, TRUE);
+    crm_periph_clock_enable(CRM_ADC1_PERIPH_CLOCK, TRUE);
+
+    gpio_init_type pin_cfg = {
+        .gpio_pins           = GPIO_PINS_0,
+        .gpio_mode           = GPIO_MODE_ANALOG,
+        .gpio_out_type       = GPIO_OUTPUT_PUSH_PULL,
+        .gpio_pull           = GPIO_PULL_NONE,
+        .gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER,
+    };
+
+    gpio_init(GPIOB, &pin_cfg);
+
+    adc_common_config_type adc_cfg = {
+        .combine_mode                    = ADC_INDEPENDENT_MODE,
+        .div                             = ADC_HCLK_DIV_4,
+        .common_dma_mode                 = ADC_COMMON_DMAMODE_DISABLE,
+        .common_dma_request_repeat_state = FALSE,
+        .sampling_interval               = ADC_SAMPLING_INTERVAL_5CYCLES,
+        .tempervintrv_state              = FALSE,
+        .vbat_state                      = FALSE,
+    };
+
+    adc_common_config(&adc_cfg);
+
+    adc_base_config_type base_cfg = {
+        .sequence_mode           = FALSE,
+        .repeat_mode             = FALSE,
+        .data_align              = ADC_RIGHT_ALIGNMENT,
+        .ordinary_channel_length = 1,
+    };
+
+    adc_base_config(ADC1, &base_cfg);
+
+    adc_resolution_set(ADC1, ADC_RESOLUTION_12B);
+
+    adc_ordinary_channel_set(ADC1, ADC_CHANNEL_8, 1, ADC_SAMPLETIME_640_5);
+
+    adc_enable(ADC1, TRUE);
+
+    while (adc_flag_get(ADC1, ADC_RDY_FLAG) == RESET) {
+        /* -- */
+    }
+
+    adc_calibration_init(ADC1);
+    while (adc_calibration_init_status_get(ADC1)) {
+        /* -- */
+    }
+
+    adc_calibration_start(ADC1);
+    while (adc_calibration_status_get(ADC1)) {
+        /* -- */
+    }
+}
+
+uint16_t app_adc_read(void) {
+    adc_ordinary_software_trigger_enable(ADC1, TRUE);
+    while (adc_flag_get(ADC1, ADC_OCCE_FLAG) == RESET) {
+        /* -- */
+    }
+
+    return adc_ordinary_conversion_data_get(ADC1);
+}

src/main.c

@@ -6,6 +6,7 @@
 #include "at32f435_437_i2c.h"
 
 /* ATE */
+#include "app_adc.h"
 #include "app_ate_impl.h"
 
 static ate_t s_ate = {
@@ -17,11 +18,14 @@ static ate_t s_ate = {
         },
 };
 
+static int app_ad_da_test(void);
+
 int main(void) {
     system_clock_config();
     at32_board_init();
     uart_print_init(115200);
 
+    app_adc_init();
     ate_impl_i2c_init();
 
     if (ate_init(&s_ate) != ATE_RET_SUCCESS) {
@@ -32,73 +36,64 @@ int main(void) {
 
     printf("ATE initialized.\r\n");
 
-    bool pin_value = false;
+    at32_led_on(LED3);
 
-    if (ate_gpio_read(&s_ate, 0, &pin_value) != ATE_RET_SUCCESS) {
-        printf("Failed to read GPIO value\r\n");
-
-        goto dead_loop;
+    if (app_ad_da_test() < 0) {
+        goto fail_exit;
     }
 
-    if (ate_gpio_write(&s_ate, 0, 1) != ATE_RET_SUCCESS) {
-        printf("Failed to write pin.\r\n");
-
-        goto dead_loop;
-    }
-
-    if (ate_gpio_init(&s_ate, 0, ATE_GPIO_MODE_OUTPUT_PP) != ATE_RET_SUCCESS) {
-        printf("Failed to config pin.");
-
-        goto dead_loop;
-    }
-
-    if (ate_gpio_read(&s_ate, 0, &pin_value) != ATE_RET_SUCCESS) {
-        printf("Failed to read GPIO value\r\n");
-
-        goto dead_loop;
-    }
-
-    printf("GPIO value: %d\r\n", pin_value);
-
-    if (ate_adc_configure(&s_ate, true, ATE_ADC_CH_IOREF_MASK) != ATE_RET_SUCCESS) {
-        printf("Failed to enable ATE ADC.\r\n");
-
-        goto dead_loop;
-    }
-
-    uint16_t ioref_val;
-    uint16_t da_value = 0;
+    at32_led_off(LED3);
+    at32_led_on(LED4);
+    ate_led_set(&s_ate, ATE_LED_G, true);
 
     for (;;) {
         /* -- */
-        ate_led_set(&s_ate, ATE_LED_G, true);
-        delay_ms(500);
-        ate_led_set(&s_ate, ATE_LED_G, false);
-        delay_ms(500);
-
-        ate_ret_t ret = ate_adc_read(&s_ate, ATE_ADC_CH_IOREF, &ioref_val);
-        if (ret == ATE_RET_NOT_READY) {
-            printf("ADC result is not ready.\r\n");
-
-            continue;
-        } else if (ret != ATE_RET_SUCCESS) {
-            printf("Failed to read ADC value.\r\n");
-
-            goto dead_loop;
-        }
-
-        printf("IOREF: %ld mV\r\n", ((uint32_t)ioref_val * 3300 * 2 / 4095));
-
-        ate_dac_set(&s_ate, da_value);
-        printf("DAC set to %dmV\r\n", (da_value * 3300 / 1023));
-        da_value += 32;
-        if (da_value > 1023) {
-            da_value = 0U;
-        }
     }
 
+fail_exit:
+    at32_led_off(LED3);
+    at32_led_on(LED2);
+    ate_led_set(&s_ate, ATE_LED_R, true);
+
 dead_loop:
     for (;;) {
         /* -- */
     }
 }
+
+static int app_ad_da_test(void) {
+    printf("[ADDA] Test started.\r\n");
+
+    for (uint16_t i = 0; i < 1024; i += 16) {
+        ate_led_set(&s_ate, ATE_LED_B, true);
+
+        ate_dac_set(&s_ate, i);
+
+        delay_ms(10);
+
+        uint16_t ad_result     = app_adc_read();
+        uint16_t ad_voltage    = ad_result * 3300 / 4096;
+        uint16_t da_voltage    = i * 3300 / 1024;
+        int      delta_voltage = ad_voltage - da_voltage;
+
+        printf("[ADDA] AD voltage: %5dmV, set: %5dmV, delta: %5dmV\r\n", ad_voltage, da_voltage, delta_voltage);
+
+        if (ad_voltage > da_voltage) {
+            if (ad_voltage - da_voltage > 100) {
+                return -1;
+            }
+        } else if (da_voltage > ad_voltage) {
+            if (da_voltage - ad_voltage > 100) {
+                return -1;
+            }
+        }
+
+        ate_led_set(&s_ate, ATE_LED_B, false);
+
+        delay_ms(10);
+    }
+
+    printf("[ADDA] Test completed.\r\n");
+
+    return 0;
+}