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专题 - bluetooth蓝牙技术
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专题

monograph:special feature on education


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BlueZ-Official Linux Bluetooth protocol stack
Android 4.2之前,Google一直使用的是Linux官方蓝牙协议栈BlueZ。BlueZ实际上是由高通公司在2001年5月基于GPL协议发布的一个开源项目,做为Linux 2.4.6内核的官方蓝牙协议栈。随着Android设备的流行,BlueZ也得到了极大的完善和扩展。例如Android 4.1中BlueZ的版本升级为4.93,它支持蓝牙核心规范4.0,并实现了绝大部分的Profiles。

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概述:
AC781x 系列为车规MCU,符合AEC-Q100规范,适用于汽车电子和高可靠性工业应用,典型应用包括车身控制、T-BOX、BLDC电机控制、工业控制、交流充电桩等;
AC781x系列芯片基于ARM Cortex®-M3内核,运行主频为100MHz,最高256KB闪存,供电电压支持2.7~5.5V,具备出色的EMC/ESD能力,能够适应更恶劣的环境;
特性:
- ARM Cortex®-M3内核,100MHz,单周期32位 x 32位乘法器
- 最大支持256KB 嵌入式闪存
- 最大支持64KB RAM
- 支持2路CAN 2.0B
- 支持1路LIN 2.1, 1路UART LIN
- 支持2路SPI
- 最大支持6路UART
- 支持2路I2C
- 2.7-5.5V 电源供电
- 温度范围: -40 to 125 °C

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General Electrical Specification

Absolute Maximum Ratings:  

Ratings  Min.  Max. 
Storage Temperature  -40 +85
Supply Voltage (VCHG)  -0.4V  5.75V 
Supply Voltage (VREG_ENABLE,VBAT_SENSE)  -0.4V  4.2V 
Supply Voltage (LED[2:0])  -0.4V  4.4V 
Supply Voltage (PIO_POWER)  -0.4V  3.6V 

Recommended Operating Condition:

Operating Temperature range  -20 +75
Supply Voltage (VBAT)  2.7V  4.25V 
Supply Voltage (VCHG)  4.75V / 3.10 V  5.25V 
Supply Voltage (VREG_ENABLE,VBAT_SENSE)  0V  4.2V 
Supply Voltage (LED[2:0])  1.10V  4.25V 
Supply Voltage (PIO_POWER)*  1.7V  3.6V

1.8V Switch-mode Regulator :

 

 

 

 

 

 

 


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【方歌】牙宣初起肿牙龈,日渐腐颓久露根,恶热恶凉当细别,胃经客热风寒侵。

【注】此证牙龈宣肿,龈肉日渐腐颓,久则削缩,以致齿牙宣露。总由胃经客热积久,外受邪风,寒凉相搏而成。有喜凉饮而恶热者,系客热遇寒凉,凝滞于龈肉之间;有喜热饮而恶凉者,系客热受邪风,稽留于龈肉之内。客热遇寒者,牙龈出血,恶热口臭,宜服清胃汤;客热受风者,牙龈恶凉,遇风痛甚,宜服独活散。外有龈牙腐臭,齿根动摇者,属胃中虚火,而兼肾虚,齿乃肾之余,宜服三因安肾丸。又有牙龈腐臭,时津白脓者,属胃中湿,热宜服属角升麻汤,外俱用胡桐泪散擦之,以食盐冲汤漱口。惟牙龈动摇,或兼疼痛者,日以李杲牢牙散擦之,夜用固齿白玉膏贴之,缓缓取效。若龈肉腐烂,露牙床骨者逆。

方剂:独活散

组成:独活羌活防风川芎(各一钱六分)

薄荷生地荆芥(各一钱)细辛(七分)

上为粗末,每用二钱,水煎澄渣,食后服,日用三服。

【方歌】独活风毒注牙根,龈肿嫌凉痛莫禁,羌活防风共生地,薄荷荆芥合芎辛。

又方:三因安肾丸

组成:补骨脂(炒)胡庐巴(炒)

茴香(炒)川楝子(炒)

续断(炒,各三两)山药杏仁(炒)白茯苓桃仁(炒,各二两)

共研细末,炼蜜为丸,如梧桐子大。每服二钱,空心淡盐汤送下。

【方歌】三因安肾虚火烁,牙龈腐臭齿根摇,山药杏茴苓骨脂,胡卢巴续川楝桃。

又方:胡桐泪散

组成:胡桐泪细辛川芎白芷(各一钱五分)

寒水石(〔火段〕,二钱)生地(一钱)

青盐(二分)

共研细末,干搽牙龈患处,待顿饭时,以温水漱去,少时再上。

【方歌】胡桐泪散牙龈肿,津血宣露或出脓,细辛寒水石生地,青盐白芷共川芎。

又方:李杲牢牙散

组成:龙胆草(酒浸,一两五钱)羌活地骨皮(各一两)升麻(四分)

共研末,先以温水漱口,用少许搽之。

【方歌】李杲牢牙擦齿病,牙龈摇动或兼疼,胆草升麻羌地骨,研末漱口搽有功。

又方:固齿白玉膏

组成:官粉(研,一两)珍珠(末,三钱)

阳起石(用僵蚕四十九条,防风、当归、川芎、牙皂、青盐、升麻、白芷、地骨皮各五钱,细新、〔高〕本各三钱,共研粗末,长流水五碗,同药入砂锅内,以桑柴火熬药至三碗,去渣;再入砂锅内,煎至一碗,将龙骨、阳起石火〔火段〕通红,入药汁内淬之。如此七次,去药汁,将龙骨、阳起石焙干,研末)

麝香(末,二钱)龙骨(二两)

象牙(末,五钱)

用黄蜡三两,溶化滤净,再化,离火候温,方入前药和匀,乘热摊纸上。如膏冷,将熨斗烧热仰放,纸铺熨斗底上摊之。用时先以温水漱口,将膏剪一小条,贴于患处,闭口勿语。

【方歌】固齿白玉贴牙效,一切牙痛及动摇,官粉珍珠阳起麝,龙骨象牙黄蜡熬。

又方:清胃汤(见牙衄)

犀角升麻汤(见面物颊疡)


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Error

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mysqli object is already closed

Exception

Error

  1. */
  2. public function disconnect()
  3. {
  4. // Close the connection.
  5. if (\is_callable([$this->connection, 'close'])) {
  6. $this->connection->close();
  7. }
  8. parent::disconnect();
  9. }
  1. */
  2. public function disconnect()
  3. {
  4. // Close the connection.
  5. if (\is_callable([$this->connection, 'close'])) {
  6. $this->connection->close();
  7. }
  8. parent::disconnect();
  9. }
  1. *
  2. * @since 2.0.0
  3. */
  4. public function __destruct()
  5. {
  6. $this->disconnect();
  7. }
  8. /**
  9. * Alter database's character set.
  10. *
DatabaseDriver->__destruct()

Stack Trace

Error
Error:
mysqli object is already closed

  at /var/www/html/libraries/vendor/joomla/database/src/Mysqli/MysqliDriver.php:318
  at mysqli->close()
     (/var/www/html/libraries/vendor/joomla/database/src/Mysqli/MysqliDriver.php:318)
  at Joomla\Database\Mysqli\MysqliDriver->disconnect()
     (/var/www/html/libraries/vendor/joomla/database/src/DatabaseDriver.php:496)
  at Joomla\Database\DatabaseDriver->__destruct()                

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