From: andre Ebersold <andre.ebersold@free.fr>
Date: Sun, 12 May 2024 13:56:28 +0000 (+0200)
Subject: Fixes to build on atmega32u4
X-Git-Url: https://git.ebersold.fr/?a=commitdiff_plain;h=14fba86d786d0e08c2b817383f3563b5e47bab74;p=atmel%2Favr.git

Fixes to build on atmega32u4
---

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c533ab2..46fba18 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,7 +6,7 @@ SET(BUILD_TARGET "stm32g030" CACHE STRING "Target [stm32g030, stm32F103, atmega3
 if("${BUILD_TARGET}" STREQUAL "atmega328p")
   include(${CMAKE_CURRENT_SOURCE_DIR}/rules/target-atmega328p.cmake)
 elseif ("${BUILD_TARGET}" STREQUAL "atmega32u4")
-  include(${CMAKE_CURRENT_SOURCE_DIR}/rules/target-atmega328p.cmake)
+  include(${CMAKE_CURRENT_SOURCE_DIR}/rules/target-atmega32u4.cmake)
 elseif ("${BUILD_TARGET}" STREQUAL "stm32g030")
   include(${CMAKE_CURRENT_SOURCE_DIR}/rules/target-stm32g030.cmake)
 else()
diff --git a/HAL/AVR/AvrI2C.cpp b/HAL/AVR/AvrI2C.cpp
index 734bcd8..c896b09 100644
--- a/HAL/AVR/AvrI2C.cpp
+++ b/HAL/AVR/AvrI2C.cpp
@@ -12,9 +12,13 @@
 
 #define START
 #define MT_SLA_ACK
+#if defined (__AVR_ATmega32U4__)
+#define TW_SDA_PIN PORTD1
+#define TW_SCL_PIN PORTD0
+#else
 #define TW_SDA_PIN PORTC4
 #define TW_SCL_PIN PORTC5
-
+#endif
 #define I2C_ERROR   0
 #define I2C_SUCCESS 1
 
@@ -29,7 +33,11 @@ void AvrI2C::init()
     //TWBR = ((F_CPU/SCL_CLOCK)-16)/2; 
     // 16Mhz / (16 + 2*12*1) = 400Khz
     TWBR = 12; 
+#if defined (__AVR_ATmega32U4__)
+    PRR0  &= ~(1<<PRTWI);
+#else
     PRR   &= ~(1<<PRTWI);
+#endif
     DDRC  |= (1<<TW_SDA_PIN) | (1 <<TW_SCL_PIN);
     // Enable Pull UP
     PORTC |= (1<<TW_SDA_PIN) | (1 <<TW_SCL_PIN);
diff --git a/rules/target-atmega32u4.cmake b/rules/target-atmega32u4.cmake
new file mode 100644
index 0000000..7d9ce3a
--- /dev/null
+++ b/rules/target-atmega32u4.cmake
@@ -0,0 +1,23 @@
+##########################################################################
+# tools to beused for programming the AVR
+##########################################################################
+set(AVR_UPLOADTOOL avrdude CACHE STRING "AVR MCU Programmer ")
+set(AVR_PROGRAMMER arduino)
+set(AVR_UPLOADTOOL_PORT CACHE STRING "AVRdude upload port")
+set(AVR_UPLOADTOOL_BAUDRATE 57600)
+
+##########################################################################
+# AVR and fuses needs to be set
+##########################################################################
+set(AVR_MCU atmega32u4 CACHE STRING "AVR MCU type choose between atmega32_p or atmega32u4 atmega328p")
+set(AVR_H_FUSE 0xd9)
+set(AVR_L_FUSE 0xc3)
+
+### END TOOLCHAIN SETUP AREA #############################################
+
+include(${CMAKE_CURRENT_SOURCE_DIR}/rules/gcc-avr-generic.cmake)
+
+PROJECT(tinyapp)
+
+include(${CMAKE_CURRENT_SOURCE_DIR}/rules/gcc-avr-common.cmake)
+