drivers/st7735: support for ST7789

ST7735 driver can also be used for ST7789. st7789 is simply defined as pseudomodule that pulls in automatically module st7735.

drivers/Makefile.dep

@@ -204,6 +204,10 @@ ifneq (,$(filter stmpe811_%,$(USEMODULE)))
   USEMODULE += stmpe811
 endif
 
+ifneq (,$(filter st7789,$(USEMODULE)))
+  USEMODULE += st7735
+endif
+
 ifneq (,$(filter sx126%,$(USEMODULE)))
   USEMODULE += sx126x
 endif

drivers/include/st7735.h

@@ -28,6 +28,10 @@
  * when strictly necessary. This option will slow down the driver as it
  * certainly can't use DMA anymore, every short has to be converted before
  * transfer.
+ *
+ * @note The driver can also be used for the ST7789 which is compatible with
+ *       the ST7735 but supports higher resolutions. Just enable the module
+ *       `st7789` instead of `st7735` if your board uses the ST7789.
  */
 
 

drivers/st7735/Kconfig

@@ -22,6 +22,16 @@ config HAVE_ST7735
     help
       Indicates that an ST7735 display is present.
 
+config MODULE_ST7789
+    bool "ST7789 display driver"
+    select MODULE_ST7735
+
+config HAVE_ST7789
+    bool
+    select MODULE_ST7789 if MODULE_DISP_DEV
+    help
+      Indicates that an ST7789 display is present.
+
 menuconfig KCONFIG_USEMODULE_ST7735
     bool "Configure ST7735 driver"
     depends on USEMODULE_ST7735

drivers/st7735/Makefile.include

@@ -1,2 +1,4 @@
+PSEUDOMODULES += st7789
+
 USEMODULE_INCLUDES_st7735 := $(LAST_MAKEFILEDIR)/include
 USEMODULE_INCLUDES += $(USEMODULE_INCLUDES_st7735)

drivers/st7735/st7735.c

@@ -66,7 +66,12 @@ static uint8_t _st7735_calc_vml(int16_t vcoml)
 
 static int _init(lcd_t *dev, const lcd_params_t *params)
 {
-    assert(params->lines <= 162);
+    if (IS_USED(MODULE_ST7789)) {
+        assert(params->lines <= 320);
+    }
+    else {
+        assert(params->lines <= 162);
+    }
     dev->params = params;
     uint8_t command_params[4] = { 0 };