RaspberryPI

树莓派上的音乐播放器

Posted on 2018年5月11日, updated on 2018年5月11日 by allenmo

rthythmbox vlc kodi exaile banshee qmmp

ssh到树莓派中文显示？乱码

Posted on 2018年4月29日, updated on 2018年5月16日 by allenmo

ssh到树莓派中文显示？乱码，还有mac电脑ssh到树莓派还显示一些报错信息： -bash: warning: […]

pi-dashboard

Posted on 2018年4月27日, updated on 2018年4月27日 by allenmo

http://maker.quwj.com/project/10

python读取树莓派状态（CPU温度，使用率，RAM使用率，硬盘使用率）

Posted on 2018年2月16日, updated on 2018年2月16日 by allenmo

import os

# Return CPU temperature as a character string
def getCPUtemperature():
    res = os.popen('vcgencmd measure_temp').readline()
    return(res.replace("temp=","").replace("'C\n",""))

def getCPUtemperature_2():
    return os.popen('vcgencmd measure_temp').read()[5:9]

def getCPUtemperature_3():
    with open("/sys/class/thermal/thermal_zone0/temp") as tempFile:
        res = tempFile.read()
        res=str(float(res)/1000)
    return res

# Return RAM infomation(unit=kb) in a list
# Index 0: total RAM
# Index 1: used RAM
# Index 2: free RAM
def getRAMinfo():
    p = os.popen('free')
    i = 0
    while 1:
        i = i+1
        line = p.readline()
        if i == 2:
            return(line.split()[1:4])

# Return % of CPU used by user as a character string
def getCPUuse():
    return(str(os.popen("top -n1 | awk '/Cpu\(s\):/ {print $2}'").readline().strip()))

# Return information about disk space as a list (unit include)
# Index 0: total disk space
# Index 1: used disk space
# Index 2: remaining disk space
# Index 3: percentaage of disk used
def getDiskSpace():
    p = os.popen("df -h /")
    i = 0
    while 1:
         i = i + 1
         line = p.readline()
         if i == 2:
             return(line.split()[1:5])

# CPU informaiton
CPU_temp = getCPUtemperature()
CPU_temp_2 = getCPUtemperature_2()
CPU_temp_3 = getCPUtemperature_3()
CPU_usage = getCPUuse()

# RAM information
# Output is in kb, here I convert it in Mb for readability
RAM_stats = getRAMinfo()
RAM_total = round(int(RAM_stats[0]) / 1000, 1)
RAM_used = round(int(RAM_stats[1]) / 1000, 1)
RAM_free = round(int(RAM_stats[2]) /1000, 1)

# Disk information
DISK_stats = getDiskSpace()
DISK_total = DISK_stats[0]
DISK_used = DISK_stats[1]
DISK_perc = DISK_stats[3]

if __name__ == '__main__':
    print('')
    print('CPU Temperature = ' + CPU_temp)
    print('CPU Temperature = ' + CPU_temp_2)
    print('CPU Temperature = ' + CPU_temp_3)
    print('CPU Use = ' + CPU_usage)

    print('')
    print('RAM Total = ' + str(RAM_total) + ' MB')
    print('RAM Used = ' + str(RAM_used) + ' MB')
    print('RAM Free = ' + str(RAM_free) + ' MB')

    print('')
    print('DISK Total Space = ' + str(DISK_total) + 'B')
    print('DISK Used Space = ' + str(DISK_used) + 'B')
    print('DISK Used Percentage = ' + str(DISK_perc))

import os

# Return CPU temperature as a character string

def getCPUtemperature():

res = os.popen('vcgencmd measure_temp').readline()

return(res.replace("temp=","").replace("'C\n",""))

def getCPUtemperature_2():

return os.popen('vcgencmd measure_temp').read()[5:9]

def getCPUtemperature_3():

with open("/sys/class/thermal/thermal_zone0/temp") as tempFile:

res = tempFile.read()

res=str(float(res)/1000)

return res

# Return RAM infomation(unit=kb) in a list

# Index 0: total RAM

# Index 1: used RAM

# Index 2: free RAM

def getRAMinfo():

p = os.popen('free')

i = 0

while 1:

i = i+1

line = p.readline()

if i == 2:

return(line.split()[1:4])

# Return % of CPU used by user as a character string

def getCPUuse():

return(str(os.popen("top -n1 | awk '/Cpu$s$:/ {print $2}'").readline().strip()))

# Return information about disk space as a list (unit include)

# Index 0: total disk space

# Index 1: used disk space

# Index 2: remaining disk space

# Index 3: percentaage of disk used

def getDiskSpace():

p = os.popen("df -h /")

i = 0

while 1:

i = i + 1

line = p.readline()

if i == 2:

return(line.split()[1:5])

# CPU informaiton

CPU_temp = getCPUtemperature()

CPU_temp_2 = getCPUtemperature_2()

CPU_temp_3 = getCPUtemperature_3()

CPU_usage = getCPUuse()

# RAM information

# Output is in kb, here I convert it in Mb for readability

RAM_stats = getRAMinfo()

RAM_total = round(int(RAM_stats[0]) / 1000, 1)

RAM_used = round(int(RAM_stats[1]) / 1000, 1)

RAM_free = round(int(RAM_stats[2]) /1000, 1)

# Disk information

DISK_stats = getDiskSpace()

DISK_total = DISK_stats[0]

DISK_used = DISK_stats[1]

DISK_perc = DISK_stats[3]

if __name__ == '__main__':

print('')

print('CPU Temperature = ' + CPU_temp)

print('CPU Temperature = ' + CPU_temp_2)

print('CPU Temperature = ' + CPU_temp_3)

print('CPU Use = ' + CPU_usage)

print('')

print('RAM Total = ' + str(RAM_total) + ' MB')

print('RAM Used = ' + str(RAM_used) + ' MB')

print('RAM Free = ' + str(RAM_free) + ' MB')

print('')

print('DISK Total Space = ' + str(DISK_total) + 'B')

print('DISK Used Space = ' + str(DISK_used) + 'B')

print('DISK Used Percentage = ' + str(DISK_perc))

运行结果： [crayon-650d7dab […]

RPI vcgencmd usage

Posted on 2018年2月16日 by allenmo

https://elinux.org/RPI_vcgencmd_usage [crayon-650d7dab6 […]

树莓派原理图

Posted on 2018年2月15日, updated on 2018年2月15日 by allenmo

https://www.raspberrypi.org/documentation/hardware/rasp […]

NMOS, PMOS

Posted on 2018年2月15日, updated on 2018年2月19日 by allenmo

NMOS：Vgs大于一定值就会导通，适用于源极接地（低端驱动），如果源极不接地呢？ PMOS: Vgs小于一定 […]

sunxi.org allwinner link

Posted on 2018年2月2日 by allenmo

https://linux-sunxi.org/Main_Page providing open source […]

VirtualBox 安装Raspbian

Posted on 2018年1月26日, updated on 2018年1月26日 by allenmo

在树莓派官网发现一个”Raspberry Pi Desktop (for PC and Mac)& […]

wiringpi

Posted on 2018年1月5日, updated on 2018年1月6日 by allenmo

About https://www.cnblogs.com/lulipro/p/5992172.html

Android on RPI3

Posted on 2017年11月27日 by allenmo

RTAndroid: https://rtandroid.embedded.rwth-aachen.de/do […]

diego Robot !

Posted on 2017年8月23日 by allenmo

Lesson 26：Diego 1# —物体识别和定位

树莓派扩展板：High-Precision AD/DA Board

Posted on 2017年8月16日, updated on 2017年12月14日 by allenmo

http://www.waveshare.net/wiki/High-Precision_AD/DA_Boar […]

树莓派新成员发布: Raspberry Pi Zero W

Posted on 2017年3月1日, updated on 2017年3月1日 by allenmo

2017年3月1，树莓派5岁生日，发布了新成员：Raspberry Pi Zero W 是Pi Zero的升 […]

picamera dir(PiCamera)

Posted on 2016年11月23日, updated on 2016年11月23日 by allenmo

['AWB_MODES', 
'CAMERA_CAPTURE_PORT', 
'CAMERA_PREVIEW_PORT', 
'CAMERA_VIDEO_PORT', 
'CAPTURE_TIMEOUT', 
'CLOCK_MODES', 
'DEFAULT_ANNOTATE_SIZE', 
'DRC_STRENGTHS', 
'EXPOSURE_MODES', 
'FLASH_MODES', 
'IMAGE_EFFECTS', 
'ISO', 
'MAX_FRAMERATE', 
'MAX_RESOLUTION', 
'METER_MODES', 
'RAW_FORMATS', 
'STEREO_MODES', 
'_AWB_MODES_R', 
'_CLOCK_MODES_R', 
'_DRC_STRENGTHS_R', 
'_EXPOSURE_MODES_R', 
'_FLASH_MODES_R', 
'_IMAGE_EFFECTS_R', 
'_METER_MODES_R', 
'_STEREO_MODES_R', 
'__class__', 
'__delattr__', 
'__doc__', 
'__enter__', 
'__exit__', 
'__format__', 
'__getattribute__', 
'__hash__', 
'__init__', 
'__module__', 
'__new__', 
'__reduce__', 
'__reduce_ex__', 
'__repr__', 
'__setattr__', 
'__sizeof__', 
'__slots__', 
'__str__', 
'__subclasshook__', 
'_camera', 
'_camera_config', 
'_camera_exception', 
'_check_camera_open', 
'_check_recording_stopped', 
'_configure_camera', 
'_configure_splitter', 
'_control_callback', 
'_disable_camera', 
'_enable_camera', 
'_encoders', 
'_encoders_lock', 
'_exif_tags', 
'_get_ISO', 
'_get_analog_gain', 
'_get_annotate_background', 
'_get_annotate_foreground', 
'_get_annotate_frame_num', 
'_get_annotate_text', 
'_get_annotate_text_size', 
'_get_awb_gains', 
'_get_awb_mode', 
'_get_brightness', 
'_get_clock_mode', 
'_get_color_effects', 
'_get_contrast', 
'_get_crop', 
'_get_digital_gain', 
'_get_drc_strength', 
'_get_exposure_compensation', 
'_get_exposure_mode', 
'_get_exposure_speed', 
'_get_flash_mode', 
'_get_frame', 
'_get_framerate', 
'_get_framerate_delta', 
'_get_hflip', 
'_get_image_denoise', 
'_get_image_effect', 
'_get_image_effect_params', 
'_get_image_encoder', 
'_get_image_format', 
'_get_images_encoder', 
'_get_iso', 
'_get_meter_mode', 
'_get_output_format', 
'_get_overlays', 
'_get_ports', 
'_get_preview', 
'_get_preview_alpha', 
'_get_preview_fullscreen', 
'_get_preview_layer', 
'_get_preview_window', 
'_get_raw_format', 
'_get_resolution', 
'_get_rotation', 
'_get_saturation', 
'_get_sensor_mode', 
'_get_sharpness', 
'_get_shutter_speed', 
'_get_still_stats', 
'_get_timestamp', 
'_get_vflip', 
'_get_video_denoise', 
'_get_video_encoder', 
'_get_video_format', 
'_get_video_stabilization', 
'_get_zoom', 
'_image_effect_params', 
'_init_camera', 
'_init_defaults', 
'_init_led', 
'_init_preview', 
'_init_splitter', 
'_led_pin', 
'_overlays', 
'_preview', 
'_preview_alpha', 
'_preview_fullscreen', 
'_preview_layer', 
'_preview_window', 
'_raw_format', 
'_set_ISO', 
'_set_annotate_background', 
'_set_annotate_foreground', 
'_set_annotate_frame_num', 
'_set_annotate_text', 
'_set_annotate_text_size', 
'_set_awb_gains', 
'_set_awb_mode', 
'_set_brightness', 
'_set_clock_mode', 
'_set_color_effects', 
'_set_contrast', 
'_set_crop', 
'_set_drc_strength', 
'_set_exposure_compensation', 
'_set_exposure_mode', 
'_set_flash_mode', 
'_set_framerate', 
'_set_framerate_delta', 
'_set_hflip', 
'_set_image_denoise', 
'_set_image_effect', 
'_set_image_effect_params', 
'_set_iso', 
'_set_led', 
'_set_meter_mode', 
'_set_preview_alpha', 
'_set_preview_fullscreen', 
'_set_preview_layer', 
'_set_preview_window', 
'_set_raw_format', 
'_set_resolution', 
'_set_rotation', 
'_set_saturation', 
'_set_sensor_mode', 
'_set_sharpness', 
'_set_shutter_speed', 
'_set_still_stats', 
'_set_vflip', 
'_set_video_denoise', 
'_set_video_stabilization', 
'_set_zoom', 
'_splitter', 
'_splitter_connection', 
'_start_capture', 
'_stop_capture', 
'_used_led', 
'add_overlay', 
'analog_gain', 
'annotate_background', 
'annotate_foreground', 
'annotate_frame_num', 
'annotate_text', 
'annotate_text_size', 
'awb_gains', 
'awb_mode', 
'brightness', 
'capture', 
'capture_continuous', 
'capture_sequence', 
'clock_mode', 
'close', 
'closed', 
'color_effects', 
'contrast', 
'crop', 
'digital_gain', 
'drc_strength', 
'exif_tags', 
'exposure_compensation', 
'exposure_mode', 
'exposure_speed', 
'flash_mode', 
'frame', 
'framerate', 
'framerate_delta', 
'hflip', 
'image_denoise', 
'image_effect', 
'image_effect_params', 
'iso', 
'led', 
'meter_mode', 
'overlays', 
'preview', 
'preview_alpha', 
'preview_fullscreen', 
'preview_layer', 
'preview_window', 
'previewing', 
'raw_format', 
'record_sequence', 
'recording', 
'remove_overlay', 
'request_key_frame', 
'resolution', 
'rotation', 
'saturation', 
'sensor_mode', 
'sharpness', 
'shutter_speed', 
'split_recording', 
'start_preview', 
'start_recording', 
'still_stats', 
'stop_preview', 
'stop_recording', 
'timestamp', 
'vflip', 
'video_denoise', 
'video_stabilization', 
'wait_recording', 
'zoom'
]

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

['AWB_MODES',

'CAMERA_CAPTURE_PORT',

'CAMERA_PREVIEW_PORT',

'CAMERA_VIDEO_PORT',

'CAPTURE_TIMEOUT',

'CLOCK_MODES',

'DEFAULT_ANNOTATE_SIZE',

'DRC_STRENGTHS',

'EXPOSURE_MODES',

'FLASH_MODES',

'IMAGE_EFFECTS',

'ISO',

'MAX_FRAMERATE',

'MAX_RESOLUTION',

'METER_MODES',

'RAW_FORMATS',

'STEREO_MODES',

'_AWB_MODES_R',

'_CLOCK_MODES_R',

'_DRC_STRENGTHS_R',

'_EXPOSURE_MODES_R',

'_FLASH_MODES_R',

'_IMAGE_EFFECTS_R',

'_METER_MODES_R',

'_STEREO_MODES_R',

'__class__',

'__delattr__',

'__doc__',

'__enter__',

'__exit__',

'__format__',

'__getattribute__',

'__hash__',

'__init__',

'__module__',

'__new__',

'__reduce__',

'__reduce_ex__',

'__repr__',

'__setattr__',

'__sizeof__',

'__slots__',

'__str__',

'__subclasshook__',

'_camera',

'_camera_config',

'_camera_exception',

'_check_camera_open',

'_check_recording_stopped',

'_configure_camera',

'_configure_splitter',

'_control_callback',

'_disable_camera',

'_enable_camera',

'_encoders',

'_encoders_lock',

'_exif_tags',

'_get_ISO',

'_get_analog_gain',

'_get_annotate_background',

'_get_annotate_foreground',

'_get_annotate_frame_num',

'_get_annotate_text',

'_get_annotate_text_size',

'_get_awb_gains',

'_get_awb_mode',

'_get_brightness',

'_get_clock_mode',

'_get_color_effects',

'_get_contrast',

'_get_crop',

'_get_digital_gain',

'_get_drc_strength',

'_get_exposure_compensation',

'_get_exposure_mode',

'_get_exposure_speed',

'_get_flash_mode',

'_get_frame',

'_get_framerate',

'_get_framerate_delta',

'_get_hflip',

'_get_image_denoise',

'_get_image_effect',

'_get_image_effect_params',

'_get_image_encoder',

'_get_image_format',

'_get_images_encoder',

'_get_iso',

'_get_meter_mode',

'_get_output_format',

'_get_overlays',

'_get_ports',

'_get_preview',

'_get_preview_alpha',

'_get_preview_fullscreen',

'_get_preview_layer',

'_get_preview_window',

'_get_raw_format',

'_get_resolution',

'_get_rotation',

'_get_saturation',

'_get_sensor_mode',

'_get_sharpness',

'_get_shutter_speed',

'_get_still_stats',

'_get_timestamp',

'_get_vflip',

'_get_video_denoise',

'_get_video_encoder',

'_get_video_format',

'_get_video_stabilization',

'_get_zoom',

'_image_effect_params',

'_init_camera',

'_init_defaults',

'_init_led',

'_init_preview',

'_init_splitter',

'_led_pin',

'_overlays',

'_preview',

'_preview_alpha',

'_preview_fullscreen',

'_preview_layer',

'_preview_window',

'_raw_format',

'_set_ISO',

'_set_annotate_background',

'_set_annotate_foreground',

'_set_annotate_frame_num',

'_set_annotate_text',

'_set_annotate_text_size',

'_set_awb_gains',

'_set_awb_mode',

'_set_brightness',

'_set_clock_mode',

'_set_color_effects',

'_set_contrast',

'_set_crop',

'_set_drc_strength',

'_set_exposure_compensation',

'_set_exposure_mode',

'_set_flash_mode',

'_set_framerate',

'_set_framerate_delta',

'_set_hflip',

'_set_image_denoise',

'_set_image_effect',

'_set_image_effect_params',

'_set_iso',

'_set_led',

'_set_meter_mode',

'_set_preview_alpha',

'_set_preview_fullscreen',

'_set_preview_layer',

'_set_preview_window',

'_set_raw_format',

'_set_resolution',

'_set_rotation',

'_set_saturation',

'_set_sensor_mode',

'_set_sharpness',

'_set_shutter_speed',

'_set_still_stats',

'_set_vflip',

'_set_video_denoise',

'_set_video_stabilization',

'_set_zoom',

'_splitter',

'_splitter_connection',

'_start_capture',

'_stop_capture',

'_used_led',

'add_overlay',

'analog_gain',

'annotate_background',

'annotate_foreground',

'annotate_frame_num',

'annotate_text',

'annotate_text_size',

'awb_gains',

'awb_mode',

'brightness',

'capture',

'capture_continuous',

'capture_sequence',

'clock_mode',

'close',

'closed',

'color_effects',

'contrast',

'crop',

'digital_gain',

'drc_strength',

'exif_tags',

'exposure_compensation',

'exposure_mode',

'exposure_speed',

'flash_mode',

'frame',

'framerate',

'framerate_delta',

'hflip',

'image_denoise',

'image_effect',

'image_effect_params',

'iso',

'led',

'meter_mode',

'overlays',

'preview',

'preview_alpha',

'preview_fullscreen',

'preview_layer',

'preview_window',

'previewing',

'raw_format',

'record_sequence',

'recording',

'remove_overlay',

'request_key_frame',

'resolution',

'rotation',

'saturation',

'sensor_mode',

'sharpness',

'shutter_speed',

'split_recording',

'start_preview',

'start_recording',

'still_stats',

'stop_preview',

'stop_recording',

'timestamp',

'vflip',

'video_denoise',

'video_stabilization',

'wait_recording',

'zoom'

]

camera.py sourc […]

树莓派摄像头检测高亮LED颜色

Posted on 2016年11月18日, updated on 2016年11月23日 by allenmo

一直想用摄像头拍摄来检查LED的颜色。但一直存在以下几个问题： LDE太亮，拍出来LDE中心的颜色基本上都是白 […]

树莓派系统Raspbian更新了！

Posted on 2016年11月10日, updated on 2016年11月10日 by allenmo

这段时间在树莓派上做一些python程序，一直都用ssh过去，很久没登录过桌面了。昨天upgrade了一下，今 […]

树莓派3 串口

Posted on 2016年10月25日, updated on 2018年1月28日 by allenmo

之前使用树莓派2的串口/dev/ttyAMA0一直没有什么问题，但发现树莓派3使用相同的方法不灵了。查了网上 […]

raspberry pi as a USB device

Posted on 2016年10月25日 by allenmo

https://www.raspberrypi.org/forums/viewtopic.php?f=63&a […]

Where to buy a raspberry pi zero? –>pimoroni

Posted on 2016年10月25日, updated on 2016年10月25日 by allenmo

介绍哪里有卖： How to find and buy the ever-elusive $5 Raspber […]