unittest skeleton

examples/test/CMakeLists.txt

@@ -0,0 +1,11 @@
+# This is the project CMakeLists.txt file for the test subproject
+cmake_minimum_required(VERSION 3.16)
+
+# Add newly added components to one of these lines:
+# 1. Add here if the component is compatible with IDF >= v4.3
+set(EXTRA_COMPONENT_DIRS "../../")
+
+set(TEST_COMPONENTS "epdiy")
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(epdiy_testrunner)

examples/test/main/CMakeLists.txt

@@ -0,0 +1 @@
+idf_component_register(SRCS "main.c" INCLUDE_DIRS ".")

examples/test/main/main.c

@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <unity.h>
+
+static void print_banner(const char* text)
+{
+    printf("\n#### %s #####\n\n", text);
+}
+
+
+void app_main(void)
+{
+    print_banner("Running all the registered tests");
+    UNITY_BEGIN();
+    unity_run_all_tests();
+    UNITY_END();
+}
+

src/board/epd_board_v7.c

@@ -162,20 +162,21 @@ static void epd_board_deinit() {
 
   int tries = 0;
   while (!((pca9555_read_input(config_reg.port, 1) & 0xC0) == 0x80)) {
-    if (tries >= 500) {
+    if (tries >= 50) {
       ESP_LOGE("epdiy", "failed to shut down TPS65185!");
       break;
     }
     tries++;
     vTaskDelay(1);
-    printf("%X\n", pca9555_read_input(config_reg.port, 1));
   }
+
   // Not sure why we need this delay, but the TPS65185 seems to generate an interrupt after some time that needs to be cleared.
-  vTaskDelay(500);
+  vTaskDelay(50);
   pca9555_read_input(config_reg.port, 0);
   pca9555_read_input(config_reg.port, 1);
-  ESP_LOGI("epdiy", "going to sleep.");
   i2c_driver_delete(EPDIY_I2C_PORT);
+
+  gpio_uninstall_isr_service();
 }
 
 static void epd_board_set_ctrl(epd_ctrl_state_t *state, const epd_ctrl_state_t * const mask) {
@@ -214,8 +215,6 @@ static void epd_board_poweron(epd_ctrl_state_t *state) {
   while (!(pca9555_read_input(config_reg.port, 1) & CFG_PIN_PWRGOOD)) {
   }
 
-  printf("PG is up\n");
-
   ESP_ERROR_CHECK(tps_write_register(config_reg.port, TPS_REG_ENABLE, 0x3F));
 
   tps_set_vcom(config_reg.port, vcom);

test/CMakeLists.txt

@@ -0,0 +1,3 @@
+idf_component_register(SRC_DIRS "."
+                       INCLUDE_DIRS "."
+                       REQUIRES unity epdiy)

test/test_initialization.c

@@ -0,0 +1,43 @@
+#include <unity.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+
+#include "epd_board.h"
+#include "epdiy.h"
+#include "epd_display.h"
+
+TEST_CASE("Mean of an empty array is zero", "[mean]")
+{
+    const int values[] = { 0 };
+    TEST_ASSERT_EQUAL(1, 1);
+}
+
+TEST_CASE("V7 initialization and deinitialization works", "[epdiy]")
+{
+    epd_init(&epd_board_v7, &ED097TC2, EPD_OPTIONS_DEFAULT);
+
+    epd_poweron();
+    vTaskDelay(2);
+    epd_poweroff();
+
+    epd_deinit();
+}
+
+TEST_CASE("V7 re-initialization works", "[epdiy]")
+{
+    epd_init(&epd_board_v7, &ED097TC2, EPD_OPTIONS_DEFAULT);
+
+    epd_poweron();
+    vTaskDelay(2);
+    epd_poweroff();
+
+    epd_deinit();
+
+    epd_init(&epd_board_v7, &ED097TC2, EPD_OPTIONS_DEFAULT);
+
+    epd_poweron();
+    vTaskDelay(2);
+    epd_poweroff();
+
+    epd_deinit();
+}