[max6921] Add tests

esphome/components/max6921/display.cpp

@@ -1,5 +1,6 @@
 #ifdef USE_ESP32_FRAMEWORK_ARDUINO
 
+#include <inttypes.h>
 #include "esphome/core/hal.h"
 #include "esphome/core/helpers.h"
 #include "esphome/core/log.h"

esphome/components/max6921/max6921.cpp

@@ -3,6 +3,7 @@
 #ifdef USE_ESP32_FRAMEWORK_ARDUINO
 
 #include <cinttypes>
+#include <inttypes.h>
 #include "display.h"
 #include "esphome/core/hal.h"
 #include "esphome/core/helpers.h"

esphome/components/max6921/max6921.h

@@ -2,7 +2,6 @@
 
 #ifdef USE_ESP32_FRAMEWORK_ARDUINO
 
-#include <esp32-hal-gpio.h>
 #include <string>
 #include "esphome/core/automation.h"
 #include "esphome/core/component.h"

tests/components/max6921/test.esp32-ard.yaml

@@ -0,0 +1,31 @@
+spi:
+  - id: spi_max6921
+    clk_pin: 16
+    mosi_pin: 17
+
+display:
+  - platform: max6921
+    load_pin: 12
+    blank_pin: 14
+    out_pin_mapping:
+      seg_to_out_map:
+        seg_a_pin: 0
+        seg_b_pin: 2
+        seg_c_pin: 5
+        seg_d_pin: 6
+        seg_e_pin: 4
+        seg_f_pin: 1
+        seg_g_pin: 3
+        seg_p_pin: 7
+      pos_to_out_map:
+        # IV18 positions starts at the right side!
+        pos_0_pin: 15
+        pos_1_pin: 14
+        pos_2_pin: 13
+        pos_3_pin: 16
+        pos_4_pin: 12
+        pos_5_pin: 17
+        pos_6_pin: 11
+        pos_7_pin: 18
+    lambda: |-
+      it.print("01234567");

tests/components/max6921/test.esp32-c3-ard.yaml

@@ -0,0 +1,31 @@
+spi:
+  - id: spi_max6921
+    clk_pin: 6
+    mosi_pin: 7
+
+display:
+  - platform: max6921
+    load_pin: 8
+    blank_pin: 9
+    out_pin_mapping:
+      seg_to_out_map:
+        seg_a_pin: 0
+        seg_b_pin: 2
+        seg_c_pin: 5
+        seg_d_pin: 6
+        seg_e_pin: 4
+        seg_f_pin: 1
+        seg_g_pin: 3
+        seg_p_pin: 7
+      pos_to_out_map:
+        # IV18 positions starts at the right side!
+        pos_0_pin: 15
+        pos_1_pin: 14
+        pos_2_pin: 13
+        pos_3_pin: 16
+        pos_4_pin: 12
+        pos_5_pin: 17
+        pos_6_pin: 11
+        pos_7_pin: 18
+    lambda: |-
+      it.print("01234567");