Merge pull request #5222 from mysterywolf/lcd

bsp/stm32/stm32f103-blue-pill/applications/SConscript

@@ -8,9 +8,8 @@ CPPPATH = [cwd]
 group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH)
 
 list = os.listdir(cwd)
-for d in list:
+for item in list:
-    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(cwd, item, 'SConscript')):
-    if os.path.isfile(os.path.join(path, 'SConscript')):
+        group = group + SConscript(os.path.join(item, 'SConscript'))
-        group = group + SConscript(os.path.join(d, 'SConscript'))
 
 Return('group')

bsp/stm32/stm32f407-atk-explorer/applications/SConscript

@@ -8,9 +8,8 @@ src = Glob('*.c')
 group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH)
 
 list = os.listdir(cwd)
-for d in list:
+for item in list:
-    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(cwd, item, 'SConscript')):
-    if os.path.isfile(os.path.join(path, 'SConscript')):
+        group = group + SConscript(os.path.join(item, 'SConscript'))
-        group = group + SConscript(os.path.join(d, 'SConscript'))
 
 Return('group')

bsp/stm32/stm32l475-atk-pandora/applications/SConscript

@@ -7,20 +7,16 @@ src = Split('''
 main.c
 ''')
 
-if GetDepend(['BSP_USING_LCD_SAMPLE']):
-    src += ['lcd_sample.c']
-
 if GetDepend(['PKG_USING_NRF24L01']):
-    src += ['nrf24l01_init.c']
+    src += Glob('nrf24l01_init.c')
 
 CPPPATH = [cwd]
 
 group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH)
 
 list = os.listdir(cwd)
-for d in list:
+for item in list:
-    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(cwd, item, 'SConscript')):
-    if os.path.isfile(os.path.join(path, 'SConscript')):
+        group = group + SConscript(os.path.join(item, 'SConscript'))
-        group = group + SConscript(os.path.join(d, 'SConscript'))
 
 Return('group')

bsp/stm32/stm32l475-atk-pandora/applications/lcd_sample.c

@@ -1,45 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author        Notes
- * 2019-08-28     WillianChan   first version
- */
-
-#include <rtthread.h>
-#include <rtdevice.h>
-#include <board.h>
-#include <drv_lcd.h>
-#include <rttlogo.h>
-
-static int lcd_sample(void)
-{
-    /* 清屏 */
-    lcd_clear(WHITE);
-
-    /* 显示 RT-Thread logo */
-    lcd_show_image(0, 0, 240, 69, image_rttlogo);
-
-    /* 设置背景色和前景色 */
-    lcd_set_color(WHITE, BLACK);
-
-    /* 在 LCD 上显示字符 */
-    lcd_show_string(10, 69, 16, "Hello, RT-Thread!");
-    lcd_show_string(10, 69+16, 24, "RT-Thread");
-    lcd_show_string(10, 69+16+24, 32, "RT-Thread");
-
-    /* 在 LCD 上画线 */
-    lcd_draw_line(0, 69+16+24+32, 240, 69+16+24+32);
-
-    /* 在 LCD 上画一个同心圆 */
-    lcd_draw_point(120, 194);
-    for (int i = 0; i < 46; i += 4)
-    {
-        lcd_draw_circle(120, 194, i);
-    }
-
-    return RT_EOK;
-}
-INIT_APP_EXPORT(lcd_sample);

bsp/stm32/stm32l475-atk-pandora/board/Kconfig

@@ -41,6 +41,13 @@ menu "Onboard Peripheral Drivers"
         depends on BSP_USING_SPI_LCD && !BSP_USING_LVGL
         default n
 
+    config BSP_USING_LCD_QRCODE
+        bool "Enable LCD to show QRCode"
+        depends on BSP_USING_SPI_LCD && !BSP_USING_LVGL
+        select BSP_USING_LCD_SAMPLE
+        select PKG_USING_QRCODE
+        default n
+
     config BSP_USING_LVGL
         bool "Enable LVGL for LCD"
         select PKG_USING_LVGL

bsp/stm32/stm32l475-atk-pandora/board/SConscript

@@ -12,15 +12,12 @@ board.c
 CubeMX_Config/Src/stm32l4xx_hal_msp.c
 ''')
 
-if GetDepend('BSP_USING_KEY'):
+if GetDepend(['BSP_USING_KEY']):
-    src = src + ['ports/drv_key.c']
+    src += Glob('ports/drv_key.c')
 
 if GetDepend(['BSP_USING_QSPI_FLASH']):
     src += Glob('ports/drv_qspi_flash.c')
     
-if GetDepend('BSP_USING_SPI_LCD'):
-    src = src + ['ports/drv_lcd.c']
-
 if GetDepend(['BSP_USING_SDCARD']):
     src += Glob('ports/drv_sdcard.c')
 
@@ -39,7 +36,6 @@ if GetDepend(['BSP_USING_STM32_SDIO']):
 
 path =  [cwd]
 path += [cwd + '/CubeMX_Config/Inc']
-path += [cwd + '/ports']
 
 if GetDepend(['BSP_USING_AUDIO']):
     path += [cwd + '/ports/audio']
@@ -56,10 +52,4 @@ elif rtconfig.CROSS_TOOL == 'iar':
 CPPDEFINES = ['STM32L475xx'] 
 group = DefineGroup('Drivers', src, depend = [''], CPPPATH = path, CPPDEFINES = CPPDEFINES)
 
-list = os.listdir(cwd)
-for d in list:
-    path = os.path.join(cwd, d)
-    if os.path.isfile(os.path.join(path, 'SConscript')):
-        group = group + SConscript(os.path.join(d, 'SConscript'))
-
 Return('group')

bsp/stm32/stm32l475-atk-pandora/board/ports/SConscript

@@ -3,8 +3,8 @@ from building import *
 
 objs = []
 cwd  = GetCurrentDir()
-list = os.listdir(cwd)
 
+list = os.listdir(cwd)
 for item in list:
     if os.path.isfile(os.path.join(cwd, item, 'SConscript')):
         objs = objs + SConscript(os.path.join(item, 'SConscript'))

bsp/stm32/stm32l475-atk-pandora/board/ports/lcd/SConscript

@@ -0,0 +1,16 @@
+from building import *
+import os
+
+cwd = GetCurrentDir()
+src = Glob('*.c')
+CPPPATH = [cwd]
+
+if GetDepend(['BSP_USING_LCD_QRCODE']):
+    src = src + Glob('lcd_qrcode.c')
+
+if GetDepend(['BSP_USING_LCD_SAMPLE']):
+    src = src + Glob('demo/lcd_sample.c')
+
+group = DefineGroup('Drivers', src, depend = ['BSP_USING_SPI_LCD'], CPPPATH = CPPPATH)
+
+Return('group')

bsp/stm32/stm32l475-atk-pandora/board/ports/lcd/demo/lcd_sample.c

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author        Notes
+ * 2019-08-28     WillianChan   first version
+ */
+
+#include <rtthread.h>
+#include <rtdevice.h>
+#include <board.h>
+#include <drv_lcd.h>
+#include <lcd_qrcode.h>
+#include "rttlogo.h"
+
+static int lcd_sample(void)
+{
+    lcd_clear(WHITE);
+    lcd_show_image(0, 0, 240, 69, image_rttlogo);
+    lcd_set_color(WHITE, BLACK);
+    lcd_show_string(10, 69, 24, "Hello, RT-Thread!");
+    lcd_draw_line(0, 69+24, 240, 69+24);
+#ifdef BSP_USING_LCD_QRCODE
+    lcd_show_qrcode(54, 69+24+6, 4, ECC_LOW, "https://www.rt-thread.org/", 4);
+#endif
+    return RT_EOK;
+}
+INIT_APP_EXPORT(lcd_sample);

bsp/stm32/stm32l475-atk-pandora/board/ports/lcd/drv_lcd.c

@@ -12,10 +12,10 @@
  */
 
 #include <rtdevice.h>
-#include "drv_spi.h"
-#include <drv_lcd.h>
-#include "drv_lcd_font.h"
 #include <drv_gpio.h>
+#include <drv_spi.h>
+#include "drv_lcd.h"
+#include "drv_lcd_font.h"
 
 #define DBG_TAG    "drv.lcd"
 #define DBG_LVL    DBG_INFO
@@ -885,176 +885,3 @@ rt_err_t lcd_show_image(rt_uint16_t x, rt_uint16_t y, rt_uint16_t length, rt_uin
 
     return RT_EOK;
 }
-
-#ifdef PKG_USING_QRCODE
-QRCode qrcode;
-
-static rt_uint8_t get_enlargement_factor(rt_uint16_t x, rt_uint16_t y, rt_uint8_t size)
-{
-    rt_uint8_t enlargement_factor = 1 ;
-
-    if (x + size * 8 <= LCD_W && y + size * 8 <= LCD_H)
-    {
-        enlargement_factor = 8;
-    }
-    else if (x + size * 4 <= LCD_W &&y + size * 4 <= LCD_H)
-    {
-        enlargement_factor = 4;
-    }
-    else if (x + size * 2 <= LCD_W && y + size * 2 <= LCD_H)
-    {
-        enlargement_factor = 2;
-    }
-
-    return enlargement_factor;
-}
-
-static void show_qrcode_by_point(rt_uint16_t x, rt_uint16_t y, rt_uint8_t size, rt_uint8_t enlargement_factor)
-{
-    rt_uint32_t width = 0, high = 0;
-    for (high = 0; high < size; high++)
-    {
-        for (width = 0; width < size; width++)
-        {
-            if (qrcode_getModule(&qrcode, width, high))
-            {
-                /* magnify pixel */
-                for (rt_uint32_t offset_y = 0; offset_y < enlargement_factor; offset_y++)
-                {
-                    for (rt_uint32_t offset_x = 0; offset_x < enlargement_factor; offset_x++)
-                    {
-                        lcd_draw_point(x + enlargement_factor * width + offset_x, y + enlargement_factor * high + offset_y);
-                    }
-                }
-            }
-        }
-    }
-}
-
-static void show_qrcode_by_line(rt_uint16_t x, rt_uint16_t y, rt_uint8_t size, rt_uint8_t enlargement_factor,rt_uint8_t *qrcode_buf)
-{
-    rt_uint32_t width = 0, high = 0;
-    for (high = 0; high < qrcode.size; high++)
-    {
-        for (width = 0; width < qrcode.size; width++)
-        {
-            if (qrcode_getModule(&qrcode, width, high))
-            {
-                /* magnify pixel */
-                for (rt_uint32_t offset_y = 0; offset_y < enlargement_factor; offset_y++)
-                {
-                    for (rt_uint32_t offset_x = 0; offset_x < enlargement_factor; offset_x++)
-                    {
-                        /* save the information of modules */
-                        qrcode_buf[2 * (enlargement_factor * width + offset_x + offset_y * qrcode.size * enlargement_factor)] = FORE_COLOR >> 8;
-                        qrcode_buf[2 * (enlargement_factor * width + offset_x + offset_y * qrcode.size * enlargement_factor) + 1] = FORE_COLOR;
-                    }
-                }
-            }
-            else
-            {
-                /* magnify pixel */
-                for (rt_uint32_t offset_y = 0; offset_y < enlargement_factor; offset_y++)
-                {
-                    for (rt_uint32_t offset_x = 0; offset_x < enlargement_factor; offset_x++)
-                    {
-                        /* save the information of blank */
-                        qrcode_buf[2 * (enlargement_factor * width + offset_x + offset_y * qrcode.size * enlargement_factor)] = BACK_COLOR >> 8;
-                        qrcode_buf[2 * (enlargement_factor * width + offset_x + offset_y * qrcode.size * enlargement_factor) + 1] = BACK_COLOR;
-                    }
-                }
-            }
-        }
-        /* display a line of qrcode */
-        lcd_show_image(x, y + high * enlargement_factor, qrcode.size * enlargement_factor, enlargement_factor, qrcode_buf);
-    }
-}
-
-/**
- * display the qrcode on the lcd.
- * size = (4 * version +17) * enlargement
- *
- * @param   x           x position
- * @param   y           y position
- * @param   version     version of qrcode
- * @param   ecc         level of error correction
- * @param   data        string
- * @param   enlargement enlargement_factor
- *
- * @return   0: display success
- *          -1: generate qrcode failed
-*           -5: memory low
- */
-rt_err_t lcd_show_qrcode(rt_uint16_t x, rt_uint16_t y, rt_uint8_t version, rt_uint8_t ecc, const char *data, rt_uint8_t enlargement)
-{
-    RT_ASSERT(data);
-
-    rt_int8_t result = 0;
-    rt_uint8_t enlargement_factor = 1;
-    rt_uint8_t *qrcode_buf = RT_NULL;
-
-    if (x + version * 4 + 17 > LCD_W || y + version * 4 + 17 > LCD_H)
-    {
-        LOG_E("The qrcode is too big!");
-        return -RT_ERROR;
-    }
-
-    rt_uint8_t *qrcodeBytes = (rt_uint8_t *)rt_calloc(1, qrcode_getBufferSize(version));
-    if (qrcodeBytes == RT_NULL)
-    {
-        LOG_E("no memory for qrcode!");
-        return -RT_ENOMEM;
-    }
-
-    /* generate qrcode */
-    result = qrcode_initText(&qrcode, qrcodeBytes, version, ecc, data);
-    if (result >= 0)
-    {
-        /* set enlargement factor */
-        if(enlargement == 0)
-        {
-            enlargement_factor = get_enlargement_factor(x, y, qrcode.size);
-        }
-        else
-        {
-            enlargement_factor = enlargement;
-        }
-
-        /* malloc memory for quick display of qrcode */
-        qrcode_buf = rt_malloc(qrcode.size * 2 * enlargement_factor * enlargement_factor);
-        if (qrcode_buf == RT_NULL)
-        {
-            /* clear lcd */
-            lcd_fill(x, y, x + qrcode.size, y + qrcode.size, BACK_COLOR);
-
-            /* draw point to display qrcode */
-            show_qrcode_by_point(x, y, qrcode.size, enlargement_factor);
-        }
-        else
-        {
-            /* quick display of qrcode */
-            show_qrcode_by_line(x, y, qrcode.size, enlargement_factor,qrcode_buf);
-        }
-        result = RT_EOK;
-    }
-    else
-    {
-        LOG_E("QRCODE(%s) generate falied(%d)\n", data, result);
-        result = -RT_ENOMEM;
-        goto __exit;
-    }
-
-__exit:
-    if (qrcodeBytes)
-    {
-        rt_free(qrcodeBytes);
-    }
-
-    if (qrcode_buf)
-    {
-        rt_free(qrcode_buf);
-    }
-
-    return result;
-}
-#endif

bsp/stm32/stm32l475-atk-pandora/board/ports/lcd/drv_lcd.h

@@ -13,6 +13,7 @@
 #define __DRV_LCD_H__
 
 #include <rtthread.h>
+
 #ifdef PKG_USING_QRCODE
 #include <qrcode.h>
 #endif
@@ -40,6 +41,8 @@
 #define GRAY187          0XBDD7
 #define GRAY240          0XF79E
 
+extern rt_uint16_t BACK_COLOR, FORE_COLOR;
+
 void lcd_clear(rt_uint16_t color);
 void lcd_address_set(rt_uint16_t x1, rt_uint16_t y1, rt_uint16_t x2, rt_uint16_t y2);
 void lcd_set_color(rt_uint16_t back, rt_uint16_t fore);
@@ -54,9 +57,6 @@ void lcd_fill_array(rt_uint16_t x_start, rt_uint16_t y_start, rt_uint16_t x_end,
 void lcd_show_num(rt_uint16_t x, rt_uint16_t y, rt_uint32_t num, rt_uint8_t len, rt_uint32_t size);
 rt_err_t lcd_show_string(rt_uint16_t x, rt_uint16_t y, rt_uint32_t size, const char *fmt, ...);
 rt_err_t lcd_show_image(rt_uint16_t x, rt_uint16_t y, rt_uint16_t length, rt_uint16_t wide, const rt_uint8_t *p);
-#ifdef PKG_USING_QRCODE
-rt_err_t lcd_show_qrcode(rt_uint16_t x, rt_uint16_t y, rt_uint8_t version, rt_uint8_t ecc, const char *data, rt_uint8_t enlargement);
-#endif
 
 void lcd_enter_sleep(void);
 void lcd_exit_sleep(void);

bsp/stm32/stm32l475-atk-pandora/board/ports/lcd/lcd_qrcode.c

@@ -0,0 +1,189 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author        Notes
+ */
+#include <rtconfig.h>
+
+#ifdef BSP_USING_LCD_QRCODE
+#include <qrcode.h>
+#include "drv_lcd.h"
+#include "lcd_qrcode.h"
+#define DBG_TAG    "drv.lcd.qrcode"
+#define DBG_LVL    DBG_INFO
+#include <rtdbg.h>
+
+static QRCode qrcode;
+
+static rt_uint8_t get_enlargement_factor(rt_uint16_t x, rt_uint16_t y, rt_uint8_t size)
+{
+    rt_uint8_t enlargement_factor = 1 ;
+
+    if (x + size * 8 <= LCD_W && y + size * 8 <= LCD_H)
+    {
+        enlargement_factor = 8;
+    }
+    else if (x + size * 4 <= LCD_W &&y + size * 4 <= LCD_H)
+    {
+        enlargement_factor = 4;
+    }
+    else if (x + size * 2 <= LCD_W && y + size * 2 <= LCD_H)
+    {
+        enlargement_factor = 2;
+    }
+
+    return enlargement_factor;
+}
+
+static void show_qrcode_by_point(rt_uint16_t x, rt_uint16_t y, rt_uint8_t size, rt_uint8_t enlargement_factor)
+{
+    rt_uint32_t width = 0, high = 0;
+    for (high = 0; high < size; high++)
+    {
+        for (width = 0; width < size; width++)
+        {
+            if (qrcode_getModule(&qrcode, width, high))
+            {
+                /* magnify pixel */
+                for (rt_uint32_t offset_y = 0; offset_y < enlargement_factor; offset_y++)
+                {
+                    for (rt_uint32_t offset_x = 0; offset_x < enlargement_factor; offset_x++)
+                    {
+                        lcd_draw_point(x + enlargement_factor * width + offset_x, y + enlargement_factor * high + offset_y);
+                    }
+                }
+            }
+        }
+    }
+}
+
+static void show_qrcode_by_line(rt_uint16_t x, rt_uint16_t y, rt_uint8_t size, rt_uint8_t enlargement_factor,rt_uint8_t *qrcode_buf)
+{
+    rt_uint32_t width = 0, high = 0;
+    for (high = 0; high < qrcode.size; high++)
+    {
+        for (width = 0; width < qrcode.size; width++)
+        {
+            if (qrcode_getModule(&qrcode, width, high))
+            {
+                /* magnify pixel */
+                for (rt_uint32_t offset_y = 0; offset_y < enlargement_factor; offset_y++)
+                {
+                    for (rt_uint32_t offset_x = 0; offset_x < enlargement_factor; offset_x++)
+                    {
+                        /* save the information of modules */
+                        qrcode_buf[2 * (enlargement_factor * width + offset_x + offset_y * qrcode.size * enlargement_factor)] = FORE_COLOR >> 8;
+                        qrcode_buf[2 * (enlargement_factor * width + offset_x + offset_y * qrcode.size * enlargement_factor) + 1] = FORE_COLOR;
+                    }
+                }
+            }
+            else
+            {
+                /* magnify pixel */
+                for (rt_uint32_t offset_y = 0; offset_y < enlargement_factor; offset_y++)
+                {
+                    for (rt_uint32_t offset_x = 0; offset_x < enlargement_factor; offset_x++)
+                    {
+                        /* save the information of blank */
+                        qrcode_buf[2 * (enlargement_factor * width + offset_x + offset_y * qrcode.size * enlargement_factor)] = BACK_COLOR >> 8;
+                        qrcode_buf[2 * (enlargement_factor * width + offset_x + offset_y * qrcode.size * enlargement_factor) + 1] = BACK_COLOR;
+                    }
+                }
+            }
+        }
+        /* display a line of qrcode */
+        lcd_show_image(x, y + high * enlargement_factor, qrcode.size * enlargement_factor, enlargement_factor, qrcode_buf);
+    }
+}
+
+/**
+ * display the qrcode on the lcd.
+ * size = (4 * version +17) * enlargement
+ *
+ * @param   x           x position
+ * @param   y           y position
+ * @param   version     version of qrcode
+ * @param   ecc         level of error correction
+ * @param   data        string
+ * @param   enlargement enlargement_factor
+ *
+ * @return   0: display success
+ *          -1: generate qrcode failed
+*           -5: memory low
+ */
+rt_err_t lcd_show_qrcode(rt_uint16_t x, rt_uint16_t y, rt_uint8_t version, rt_uint8_t ecc, const char *data, rt_uint8_t enlargement)
+{
+    RT_ASSERT(data);
+
+    rt_int8_t result = 0;
+    rt_uint8_t enlargement_factor = 1;
+    rt_uint8_t *qrcode_buf = RT_NULL;
+
+    if (x + version * 4 + 17 > LCD_W || y + version * 4 + 17 > LCD_H)
+    {
+        LOG_E("The qrcode is too big!");
+        return -RT_ERROR;
+    }
+
+    rt_uint8_t *qrcodeBytes = (rt_uint8_t *)rt_calloc(1, qrcode_getBufferSize(version));
+    if (qrcodeBytes == RT_NULL)
+    {
+        LOG_E("no memory for qrcode!");
+        return -RT_ENOMEM;
+    }
+
+    /* generate qrcode */
+    result = qrcode_initText(&qrcode, qrcodeBytes, version, ecc, data);
+    if (result >= 0)
+    {
+        /* set enlargement factor */
+        if(enlargement == 0)
+        {
+            enlargement_factor = get_enlargement_factor(x, y, qrcode.size);
+        }
+        else
+        {
+            enlargement_factor = enlargement;
+        }
+
+        /* malloc memory for quick display of qrcode */
+        qrcode_buf = rt_malloc(qrcode.size * 2 * enlargement_factor * enlargement_factor);
+        if (qrcode_buf == RT_NULL)
+        {
+            /* clear lcd */
+            lcd_fill(x, y, x + qrcode.size, y + qrcode.size, BACK_COLOR);
+
+            /* draw point to display qrcode */
+            show_qrcode_by_point(x, y, qrcode.size, enlargement_factor);
+        }
+        else
+        {
+            /* quick display of qrcode */
+            show_qrcode_by_line(x, y, qrcode.size, enlargement_factor,qrcode_buf);
+        }
+        result = RT_EOK;
+    }
+    else
+    {
+        LOG_E("QRCODE(%s) generate falied(%d)\n", data, result);
+        result = -RT_ENOMEM;
+        goto __exit;
+    }
+
+__exit:
+    if (qrcodeBytes)
+    {
+        rt_free(qrcodeBytes);
+    }
+
+    if (qrcode_buf)
+    {
+        rt_free(qrcode_buf);
+    }
+
+    return result;
+}
+#endif

bsp/stm32/stm32l475-atk-pandora/board/ports/lcd/lcd_qrcode.h

@@ -0,0 +1,11 @@
+#ifndef __LCD_QRCODE_H__
+#define __LCD_QRCODE_H__
+
+#include <rtconfig.h>
+
+#ifdef PKG_USING_QRCODE
+#include <rtdef.h>
+rt_err_t lcd_show_qrcode(rt_uint16_t x, rt_uint16_t y, rt_uint8_t version, rt_uint8_t ecc, const char *data, rt_uint8_t enlargement);
+#endif
+
+#endif

components/libc/compilers/common/SConscript

@@ -12,7 +12,7 @@ if GetDepend('RT_USING_LIBC'):
     if GetDepend('RT_USING_POSIX') == False:
         SrcRemove(src, ['unistd.c', 'delay.c'])
 elif GetDepend('RT_LIBC_USING_TIME'):
-    src += ['time.c']
+    src += Glob('time.c')
 
 if rtconfig.CROSS_TOOL == 'keil':
     CPPDEFINES = ['__CLK_TCK=RT_TICK_PER_SECOND']
@@ -22,9 +22,8 @@ else:
 group = DefineGroup('libc', src, depend = [], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
 
 list = os.listdir(cwd)
-for d in list:
+for item in list:
-    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(cwd, item, 'SConscript')):
-    if os.path.isfile(os.path.join(path, 'SConscript')):
+        group = group + SConscript(os.path.join(item, 'SConscript'))
-        group = group + SConscript(os.path.join(d, 'SConscript'))
 
 Return('group')