[bsp][renesas][ra4m1-ek] support RT-Thread Nano

Author: hywing

bsp/renesas/ra4m1-ek/Kconfig

@@ -11,7 +11,17 @@ PKGS_DIR := packages
 
 ENV_DIR := /
 
+config SOC_R7FA4M1AB
+    bool
+    select SOC_SERIES_R7FA4M1
+    select RT_USING_COMPONENTS_INIT
+    select RT_USING_USER_MAIN
+    default y
+
 source "$(RTT_DIR)/Kconfig"
 osource "$PKGS_DIR/Kconfig"
 rsource "../libraries/Kconfig"
-source "$(BSP_DIR)/board/Kconfig"
+
+if !RT_USING_NANO
+rsource "$(BSP_DIR)/board/Kconfig"
+endif

bsp/renesas/ra4m1-ek/rtconfig.py

@@ -43,7 +43,7 @@
     OBJCPY = PREFIX + 'objcopy'
     NM = PREFIX + 'nm'
 
-    DEVICE = ' -mcpu=cortex-m33 -mthumb -mfpu=fpv5-sp-d16 -mfloat-abi=hard -ffunction-sections -fdata-sections'
+    DEVICE = ' -mcpu=cortex-m4 -mthumb -mfpu=fpv5-sp-d16 -mfloat-abi=hard -ffunction-sections -fdata-sections'
     CFLAGS = DEVICE + ' -Dgcc'
     AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp -Wa,-mimplicit-it=thumb '
     LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,Reset_Handler -T script/fsp.ld -L script/'
@@ -69,9 +69,9 @@
     LINK = 'armlink'
     TARGET_EXT = 'axf'
 
-    DEVICE = ' --cpu Cortex-M33'
+    DEVICE = ' --cpu Cortex-M4'
 
-    CFLAGS = ' -mcpu=Cortex-M33 -xc -std=c99 --target=arm-arm-none-eabi -mfpu=fpv5-sp-d16 -mfloat-abi=hard -c'
+    CFLAGS = ' -mcpu=Cortex-M4 -xc -std=c99 --target=arm-arm-none-eabi -mfpu=fpv5-sp-d16 -mfloat-abi=hard -c'
     CFLAGS += ' -fno-rtti -funsigned-char -ffunction-sections'
     CFLAGS += ' -Wno-license-management -Wuninitialized -Wall -Wmissing-declarations -Wpointer-arith -Waggregate-return -Wfloat-equal'
 

bsp/renesas/ra4m1-ek/src/hal_entry.c

@@ -12,8 +12,11 @@
 
 #include <rtthread.h>
 #include "hal_data.h"
+#ifdef RT_USING_NANO
+#include <drv_gpio.h>
+#else
 #include <rtdevice.h>
-#include "fal.h"
+#endif /* RT_USING_NANO */
 
 #define LED_PIN    BSP_IO_PORT_01_PIN_06 /* Onboard LED pins */
 #define USER_BUTTON_PIN    "P105"