Amend the XPT2046 driver to work without a CS line (#559)

lovyan03 · Apr 27, 2024 · 78b058e · 78b058e
1 parent d35e60f
commit 78b058e
Showing 1 changed file with 8 additions and 5 deletions.
diff --git a/src/lgfx/v1/touch/Touch_XPT2046.cpp b/src/lgfx/v1/touch/Touch_XPT2046.cpp
@@ -29,10 +29,11 @@ namespace lgfx
   bool Touch_XPT2046::init(void)
   {
     _inited = false;
-    if (!isSPI()) return false;
 
-    lgfx::gpio_hi(_cfg.pin_cs);
-    lgfx::pinMode(_cfg.pin_cs, lgfx::pin_mode_t::output);
+    if (_cfg.pin_cs > -1) {
+      lgfx::gpio_hi(_cfg.pin_cs);
+      lgfx::pinMode(_cfg.pin_cs, lgfx::pin_mode_t::output);
+    }
     if (_cfg.spi_host < 0)
     {
       pinMode(_cfg.pin_sclk, lgfx::pin_mode_t::output);
@@ -110,9 +111,11 @@ namespace lgfx
     else
     {
       spi::beginTransaction(_cfg.spi_host, _cfg.freq, 0);
-      lgfx::gpio_lo(_cfg.pin_cs);
+      if (_cfg.pin_cs > -1)
+        lgfx::gpio_lo(_cfg.pin_cs);
       spi::readBytes(_cfg.spi_host, data, 57);
-      lgfx::gpio_hi(_cfg.pin_cs);
+      if (_cfg.pin_cs > -1)
+        lgfx::gpio_hi(_cfg.pin_cs);
       spi::endTransaction(_cfg.spi_host);
     }