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在i2c spec這個產品中，有1篇Facebook貼文，粉絲數超過1萬的網紅OSSLab Geek Lab，也在其Facebook貼文中提到， http://hacks.esar.org.uk/hdmi-splitter-hack/ 這篇是個非常講解清楚好玩的的黑黑電子工程... 1.發現HDMI 切換器是用I2C訊號送到 hdmi 切換 ic 來控制 output 是否加密.. 2.用一顆AVR ATTINY9 產生I2C 訊號 ...

i2c spec 在 OSSLab Geek Lab Facebook 的精選貼文

OSSLab Geek Lab By OSSLab Geek Lab

2015-10-04 02:41:41 有 3 人按讚
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http://hacks.esar.org.uk/hdmi-splitter-hack/
這篇是個非常講解清楚好玩的的黑黑電子工程...
1.發現HDMI 切換器是用I2C訊號送到 hdmi 切換 ic 來控制 output 是否加密..
2.用一顆AVR ATTINY9 產生I2C 訊號 ,來覆蓋原有i2c 訊號
3.用示波器發現 clock 不對 在AVR 做code 修正 本來加了一顆藕合電容後來又以code來修正
4.本身hdmi 分離器沒有支持ARC ,作者查了hdmi spec .
http://www.microprocessor.org/HDMISpecification13a.pdf
Pin 14 Reserved (HDMI 1.0–1.3c), Utility/HEC/ARC (Optional, HDMI 1.4+ with HDMI Ethernet Channel and Audio Return Channel) 要hdmi switcher 支持arc,就自己焊飛線 input 14 pin 到 output 14 pin.

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i2c spec 在 [問題] 求救!!寫不出I2C我就要走路了- 看板Electronics 的推薦與評價


作者zzss2003 (brotherD)
看板Electronics
標題[問題] 求救!!寫不出I2C我就要走路了
時間Sun May 28 22:14:54 2017

小弟是社會新鮮人，剛到公司自學不到一個月就被任命要在一個禮拜內寫出I2C通訊的程式
是的，您沒看錯，沒有前輩帶。

小弟現在要用PIC16F1824與OZ8920(battery protection IC)通訊，我已經把I2C的spec看
完一遍了，也把PIC16F1824的MSSP module稍微看過一輪，但還是不知道怎麼起頭。

我知道所有I2C的流程，Start, slave address, R/W, ACK, Stop，但是要如何變成程式碼
就是有困難。

我有上網抓I2C的範例，但是看了之後覺得跟SPEC上寫的流程完全不一樣，我還上國外論壇
請教，但沒有人能幫助到我的情況。我發文的網址:https://www.microchip.com/forums/m994750.aspx?tree=true

接著我又找了這個視頻https://www.youtube.com/watch?v=yM9OpRPMEAE，然後發現明明都
是I2C的通訊規格，為什麼這個視頻有分address high跟address low，我才懷疑會不會是
跟不同IC通訊時，都要配合各個IC相對應的Timing diagram，我不確定，所以想上來請教
前輩們。

我現在要做的事情只有從OZ8920的register中抓取想要的資料，OZ8920其他的動作皆由硬
體完成，想請前輩們給小弟一點方向，讓我知道能從哪裡下手，拜託了!不然我就要GG了!

這裡是OZ8920的datasheet:https://www.dropbox.com/sh/apiqddpjlv26ceq/AAA_HjaRwg8dPN0fSVTg2ddTa?dl=0


6/1補充:下載過datasheet的大大，請幫小弟一個忙，看完之後刪掉此檔案，因為主管說此
文件不能外流QQ
--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 49.215.197.69
※ 文章網址: https://www.ptt.cc/bbs/Electronics/M.1495980900.A.E29.html
※ 編輯: zzss2003 (49.215.197.69), 05/28/2017 22:16:10
※ 編輯: zzss2003 (49.215.197.69), 05/28/2017 22:16:54
推 TWkobe: 有先確定接線都符合spec規範? 05/28 22:23
有，我們公司全部都是硬體工程師，版子已經做好了，只有我一個韌體工程師
現在的情況是deadline已經要到了，版子已經全部弄好了，就差在韌體寫進去就完了
※ 編輯: zzss2003 (49.215.197.69), 05/28/2017 22:28:47
推 TWkobe: mcu有先量過gpio產生的方波符合spec的要求? 05/28 22:29
這個......我完全不知道也沒這個觀念，但我想前輩們應該都知道這個要求，因為他們使
用這顆ic很久了
※ 編輯: zzss2003 (49.215.197.69), 05/28/2017 22:33:36
推 TWkobe: 看spec這i2c是write/read的basic function看page 34 05/28 22:33
→ TWkobe: slave addr就是你這個外部設備的地址 05/28 22:33
→ TWkobe: 你看p16有寫要符合方波的要求 05/28 22:35
我看了page34，他要先給slave address(這顆IC是60H)，但我有個疑問，60H不是1個byte
的表示法嗎?可是它只能給7個bits，意思是我60H要用7個bits表示嗎?(變成C0H)
給slave address後，接著給reg_index，這跟PIC上的spec寫的方式不同，PIC上面是給
slave後就直接給data了。這樣是不是代表是說，不同IC雖然都是用I2C規格通訊，但傳送
訊息的方式卻是要依照IC的spec下去指定?

我有看Page16了，但我沒有看到方波的需求，都是跟時間有關係的參數
※ 編輯: zzss2003 (49.215.197.69), 05/28/2017 22:45:55
推 TWkobe: address high/low 應該只是一次接收量不夠分high low 05/28 22:39
→ TWkobe: 實際上還是當作address而已 05/28 22:39
推 hsucheng: https://www.ti.com/lit/an/slva704/slva704.pdf 05/28 22:40
→ hsucheng: ti的文件，只有7頁希望對你有幫助 05/28 22:41
另外，在page34，在Write_data的後面有一個叫CRC，想請問前輩那是什麼?
謝謝hsucheng大大
※ 編輯: zzss2003 (49.215.197.69), 05/28/2017 22:48:28
推 TWkobe: CRC是校驗碼, 偶爾會因為有雜訊造成data錯誤 利用這個可以 05/28 22:51
→ TWkobe: 簡單還原正確的data 05/28 22:51
那我猜我應該不用理它，因為我現在只是要抓電流跟電壓的register判斷是否在充電放電
跟充飽了沒，就算有誤差也不影響。
我想請教一下，我上面假設的60H→C0H是對的嗎?我應該只要照著page34的方式下去寫就行
了吧?
※ 編輯: zzss2003 (49.215.197.69), 05/28/2017 22:54:39
推 TWkobe: 地址是0x60, 但實際上只要餵7bit address, 有些可以直接給 05/28 22:55
→ TWkobe: 0x60, 有些要手動shit 1bit 05/28 22:55
→ TWkobe: 我是有遇過要手動shift的 05/28 22:55
推 tommycc: PIC 8bit系列應該可以用plib降低開發難度 05/28 22:55
→ TWkobe: 你就弄一個#define addr 0x60 05/28 22:56
→ TWkobe: #define addr_msg addr>>1 05/28 22:56
→ TWkobe: 實驗看看需不需要手動移, 正確的話,slave端會回傳一個ack 05/28 22:57
→ TWkobe: 至於pic的講的應該是他的libs作法, 我習慣先自己寫一個 05/28 22:58
→ TWkobe: software i2c function先驗證是否正確 05/28 22:58
→ tommycc: 喔不，不支援pic16f 05/28 23:00
→ TWkobe: 還有p16重點是看此裝置的i2c是active high or low 05/28 23:00
→ TWkobe: 通常是看start signal, 這spec看起來是active low 05/28 23:01
→ TWkobe: 意思是說sda先low一段時間後, 接著scl開始low 05/28 23:04
→ TWkobe: 弄個虛擬碼你大概就知道怎麼做 05/28 23:05
→ TWkobe: void swi2c_START (int delyTime) { 05/28 23:05
→ TWkobe: sda_set(); delay_us(delayTime); 05/28 23:07
→ TWkobe: scl_set(); delay_us(delayTime); 05/28 23:08
→ TWkobe: sda_clear(); delay_us(delayTime); 05/28 23:08
→ TWkobe: scl_clear(); delay_us(delayTime); } 05/28 23:09
推 TWkobe: 然後再弄一個swi2c_WRITE(int msg) { 05/28 23:12
→ TWkobe: int data=msg; for(int i=0; i<8; i++) { 05/28 23:13
→ TWkobe: if(data & 0x01) sda_set(); else sda_clear(); delay; 05/28 23:16
→ TWkobe: data >= 1; } 05/28 23:16
→ TWkobe: 這個function 可以用來解析要寫入的data來控制sda 05/28 23:17
→ TWkobe: 例如要寫入的slav_addr / reg_index / write_data都可用到 05/28 23:19
→ TWkobe: 最後再湊一個swi2c_writeMSG function來組合完整的write 05/28 23:21
→ TWkobe: sequence 05/28 23:21
→ TWkobe: 寫好後拿示波器量測scl/sda是否有符合完整個write signal 05/28 23:22
→ TWkobe: 當你完成寫入上述三者都應該會在sda看到正確的ack signal 05/28 23:23
推 TWkobe: 還有pic說給完address就給data的說法為何跟你spec不同的 05/28 23:26
→ TWkobe: 原因是你裝置spec的reg_index/write_data也是data呀 05/28 23:27
→ TWkobe: 不是因此i2c有何不同, i2c是標準大家都差不多, 只差在餵的 05/28 23:28
→ TWkobe: data會不同 所以pic官方才說直接後面給data 05/28 23:28
→ TWkobe: 剩下的就可以依據我說的弄出read的完整function了 05/28 23:30
推 TWkobe: 我忘了說msg之間的w/r bit是幹嘛 05/28 23:34
→ TWkobe: 這個是說接下來要對slave裝置是要進行read或write動作 05/28 23:35
推 TWkobe: 然後在說一下read sequence, 比較複雜一點 05/28 23:37
→ TWkobe: 他等於要先對slave寫入address/reg_index後 05/28 23:38
→ TWkobe: 結束一次i2c再重新restart寫入地址, 接著就重slave端讀取 05/28 23:39
→ TWkobe: sda signal 05/28 23:39
推 amistad: 推好人 TWkobe。補充一下，雖然都是 I2C 但各家實作的 05/29 00:06
推 amistad: 略有不同，但基本原理類似。需要跟預slave 端IC 來加以確 05/29 00:09
→ amistad: 認。 05/29 00:09
→ amistad: 另外，之前經驗因為sda是三態連線，驅動方向跟驅動能力都 05/29 00:10
→ amistad: 小心調整。 05/29 00:11
推 bxc: 其實你這問題分成幾個1.你要發出正確I2C 2.OZ8920 3.硬體問題 05/29 09:02
推 Williamette: TWkobe真是佛心來的 05/29 14:37
推 teddy98: 看似TWkobe是你的貴人了 05/29 15:20
推 katzlee: 佛心推文 05/29 15:31
→ katzlee: 先用示波器看是不是有ACK吧 05/29 15:33
→ katzlee: 另外你不用去國外論壇，microchip的台灣論壇就有小編和其 05/29 15:34
→ katzlee: 他高手會幫忙你了 05/29 15:34
推 NCTUbigGG: 推TWkobe！ 05/29 17:22
推 jeffic0730: 推kobe~ 05/29 19:13
推 ping870224: 推 05/29 20:26
推 furio: 推TWkobe好人 05/29 21:46
推 doubletime: 推twkibe 05/29 21:57
推 Biglottery: 推Kobe 真的是活菩薩 05/29 22:54
推 porpoisewise: 用GPIO 兜，把時序一個一個輸出再換成輸入... 確認 05/30 01:40
推 fxp87117: 佛心推 會有好報 05/30 19:29
→ yugi2567: 推好人一生平安 05/30 23:59
※ 編輯: zzss2003 (60.248.26.157), 06/01/2017 10:59:44
推 kobe8112: 幫你推TWkobe好人一生平安，真的是大貴人 06/01 12:56
推 yugi2567: 原來道歉露出咪咪不犯法 因為咪咪只要被人知道 就不算是 06/04 21:43
→ yugi2567: 咪咪啊!!!! 還主管說不能外流 06/04 21:43
噓 k012727: 連I2C都沒辦法自學…我是覺得你不要去雷人家硬體了…後 06/04 23:33
→ k012727: 續bug會解不完 06/04 23:33
→ dysyase: 蜜月期都沒過完就要包生(還指定性別)!2號才剛找書耶 06/16 11:02






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i2c spec 在 Specification for the micro:bit I2C protocol - GitHub 的推薦與評價

Specification for the micro:bit I2C protocol. Contribute to microbit-foundation/spec-i2c-protocol development by creating an account on GitHub. ... <看更多>

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#37. I2C - Zephyr Project Documentation

Zephyr recognizes the need to change the terms “master” and “slave” used in the current I2C Specification. This will be done when the conditions identified ...

#38. I2C Bus Specification（QuickStart）_宽简厚重 - CSDN博客

This is exactly what I2C bus specifications define. The I2C bus uses two wires: serial data (SDA) and serial clock (SCL). All I2C master and ...

#39. Overview of the Different Versions of the I2C Specification

The very first specification dates back to the year 1982. It only covered Standard mode (up to 100 kbit/s) and 7-bit addressing. Extensions like Fast Mode, Hs- ...

#40. VZ89 I2C SPEC - SGX Sensortech

VZ89 I2C SPEC. 1. Theory of operation: ... master can write/read the VZ89 device using the I2C interface command. The VZ89 device address contains seven ...

#41. I2C Bus Electrical Specifications The cable length limit for an ...

Every communication system has its own scope, and the I2C specification targets multi-drop, short range wired communication.

#42. I2C Master IP Core - Lattice Radiant Software User Guide

Buyer shall not rely on any data and performance specifications or parameters provided herein. Products sold by Lattice have been.

#43. I2C 和SPI 協定觸發與解碼 - Keysight

低速串列匯流排介面如I2C ( 內部積體電路) 和SPI ( 串列周邊介面)，已被 ... 設定您的示波器，在30 秒內顯示I2C 或SPI 協定解碼 ... I2C 規格及特性.

#44. Autosar Spec for I2C and UART - Stack Overflow

Automotive has some unique safety requirements and it would be hard to implement them in such protocols as UART or I2C.

#45. I2C Signal Integrity: Measurement and Electrical Validation

Phillips Semiconductor (now NXP Semiconductors) has published I2c electrical specifications and I2c protocol specifications since 1982.

#46. I²C Interface to SMBus Controller - Intel White Paper

White Paper: Determine how to interface I²C* devices and Intel® I/O Controller Hub SMBus controller with analysis guidelines. (Jan. 2009)

#47. Standard I2C EEPROM - STMicroelectronics

Discover I2C EEPROM products covering a large scope of applications, such as wearables, mobile devices, smart city or industrial automation.

#48. DS3231 Extremely Accurate I2C-Integrated RTC/TCXO/Crystal

www.maximintegrated.com. Maxim Integrated │ 2. Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, ...

#49. BR24G64FJ-3A - Data Sheet、樣品、設計資源和支持 - ROHM

I2C BUS(2-Wire). Density [bit]. 64k. Bit Format [Word x Bit]. 8k x 8. Package. SOP-J8. Package Size [mm]. 4.9x6 (t=1.65). Operating Temperature (Min.)[°C].

#50. 67B Hall Effect Joystick I2C User Manual

The I2C Spec. specifies a maximum capacitance per signal line (SCL or SDA) of 400 pF. The bus capacitance is the total of wire, PCB traces and pins.

#51. I2C Interface Specifications | SensorDots

I2C Interface Specifications As the SensorDots use the ATmega328PB, they share the same I2C client device characteristics. The interface has:

#52. 從入門到深層次理解和設計I2C電路，包括上拉電阻計算，仿真等

1對多需要考慮驅動在符合I2C Spec要求前提下能否驅動400pF容性負載、阻抗突變（連接器）位置處理，此部分因為器件及走線會造成實際電容有可能大於400pF， ...

#53. The SMBus Protocol — The Linux Kernel documentation

If you write a driver for some I2C device, please try to use the SMBus ... Note that the names used in the SMBus protocol specifications usually don't match ...

#54. A model-checked I2C specification

A model-checked I2C specification. 3. An I2C bus has two wires, clock (SCL) and data (SDA), which are pulled up to the supply voltage.

#55. the i2c bus specification philips semiconductors - 軟體兄弟

modules. The use of the I2C bus is to monitor and control the operation of the ... Compliance to the Philips Semiconductor I2C specification v2.1.,why the ...

#56. Philips Semiconductors I2C Handbook

The “I2C Bus Specification,” published by Philips Semiconductor, provides a communication protocol definition of the signal activity on the I2C Bus.

#57. CAT24C01 - EEPROM Serial 2/4/8/16 Kb I2C

respectively I2C Serial EEPROM devices organized internally as ... parameters which may be provided in onsemi data sheets and/or specifications can and do ...

#58. How do I set up a I2C Bus Decode? | Tektronix

The procedure to set up a I2C bus decode and trigger is simple once you understand the basics. First you have to have the correct module or scope option.

#59. UEFI: PI 1.3 Review, Part 1: I2C Bus Protocol | 系微股份有限公司

This article is the first in a series describing the changes in the Platform Initialization (PI) 1.3 specification. The PI specification is like the ...

#60. MPU-6000 and MPU-6050 Product Specification Revision 3.4

With its dedicated I2C sensor bus, it directly accepts inputs from an external 3-axis compass to provide a complete 9-axis MotionFusion™ output.

#61. I2C - Sparkfun Learn

The original spec allowed for only 100kHz communications, and provided only ... Learn how to extend the range of your I2C communication bus with the Qwiic ...

#62. 數位IC設計工程師(AP0280)｜凌陽科技股份有限公司｜新竹市

【工作內容】新竹市- 1.研讀I2C, Uart, UFS,I3C，AXI,AHB spec., 2.改善現有IP的效能以…。薪資：待遇面議(經常性薪資達4萬元或以上)。

#63. (PDF) I2C-Slave Specification Document - ResearchGate

PDF | These are the requirements and functional specifications for I2C slave transceiver core, fully compliant with Philips's I2C-bus specifications.

#64. I2C Tools USB to I2C Elite/Professional 主机适配器

USB-to-I2C Professional是专业I2C编程器I2C烧录器，包括usb硬件，windows平台的软件 ... (note the I2C spec limits the speed to 400 Kb/s) and SPI up to 30 Mb/s.

#65. EFM8LB1 I2C Slave High speed mode Introduce - Silicon ...

The I2C Slave interface of EFM8LB1 is a 2-wire, bidirectional serial bus that is compatible with the I2C Bus Specification 3.0.

#66. [Arduino] 修改I2C的通訊速率(Data Transfer Speed) - skybow

因為根據I2C的規格書P:55，. I2C Bus上的電阻值和電容值，會影響其SCL時脈訊號的上升時間(rise time=tr)，. 而 ...

#67. SSD1306

Specifications and information herein are subject to change without ... The I2C-bus interface gives access to write data and command into the device.

#68. i2c bus electrical specification

The datasheet states 20 + 0.1Cb, but it doesn't say in what units 0.1 coefficient is. This is not uncommon in IC datasheets. You can still make practical ...

#69. 搶攻自動駕駛商機MIPI聯盟推動標準化介面規格 - 新通訊

取代I2C/SPI介面 I3C晶片2018年登場. 隨著車用產業發展逐漸朝向電子化發展，MIPI聯盟近期正積極將I3C推向汽車應用，期能透過該介面同時整合雷達、光 ...

#70. USB-8451 Specifications - I2C SPI Interface Device Manual

This section lists specifications for the USB-8451. The following specifications are typical at 25 °C unless otherwise noted. Specifications are subject to ...

#71. I2C bus specification version 2.1 - SlideShare

1. THE I2C-BUS SPECIFICATION VERSION 2.1 JANUARY 2000 · 2. Philips Semiconductors The I2C-bus specification CONTENTS 13.4 Hs-mode devices at lower speed modes .

#72. APDU Transport over SPI / I2C v1.0 - GlobalPlatform

THIS SPECIFICATION OR OTHER WORK PRODUCT IS BEING OFFERED WITHOUT ANY WARRANTY. WHATSOEVER, AND IN PARTICULAR, ANY WARRANTY OF NON-INFRINGEMENT IS EXPRESSLY.

#73. I2C Bus 與SMBus 有什麼不同? - 易春木

傳統的i2c Bus裡的slave device並無法主動通知master 有事件發生;而SMbus ... SMBus與I2C同樣都是屬於匯流排的標準，由於SMBus Specification的制定是 ...

#74. SMBus Specifications

SMBus Specifications This page contains the released specifications, newly published updates and new specifications for review. Use these browser buttons to ...

#75. SFF-8472

The interface is an extension of the 2-wire interface ID interface defined in the GBIC specification as well as the. SFP MSA. Both ...

#76. VEML7700 High Accuracy Ambient Light Sensor With I2C ...

(1) Data based on standard I2C protocol requirement, not tested in production ... Please refer to the I2C specification from NXP for details.

#77. CE i2c pull-up spec? - Mezzanine Support - 96Boards Forum

I'm looking for the lowdown on the i2c pull-up specifications for CE boards. The documentation is a bit unclear in this regard; ...

#78. 控制器規格書 - Higgstec

禾瑞亞電容式控制器. EXC205400TBG, 2012/07/09, controller board. USB RS232 I2C, MCU:EXC7200 A/D:5404. EXC203822UDG, 2012/07/09, controller board

#79. DDC/CI specifications

The DDC bus is nothing else than an I2C bus. DDC2 informations, like monitor supported refresh rates (EDID), are transmitted using the I2C ...

#80. Web I2C API - Browsers and Robotics Community Group ...

This specification defines an API to enable web applications to access I2C (Inter-Integrated Circuit) interfaces as masters embedded in the ...

#81. i2c | 平凡備忘錄

I2C -bus specification and user manual(UM10204). The I2C-bus protocol; Data validity(何為有效資料); START and STOP condition; Byte format.

#82. TXZ Family Reference Manual I2C-B - Toshiba Electronic ...

This MCU only supports normal arbitration lost function that conforms to I2C-bus specification. It does not support the.

#83. I2C lockup/hang and "bus clear" using FT4222 Windows API ...

General Category > Discussion - Drivers. I2C lockup/hang and "bus clear" using FT4222 Windows API? (I2C spec 3.1.16). (1/1). allenhuffman:

#84. I2C Bus, I2C Interface description - Interfacebus.com

Bus uses the I 2 C bus as the electrical hardware interface. A four pin modular type connector and a shielded 4 wire cable is called out in the specification.

#85. MIPI I3C v1.1 Utility and Control Bus Strengthens Upgrade ...

... interface specifications for mobile and mobile-influenced industries, ... that eliminates the historical pain points of I2C development.

#86. I2C bus interface soft core fully compatible with Philips v. 3.0 ...

Digital Core Design's newest I2C Bus Interface soft core is fully compatible with Philips v. 3.0 specification, which means, it can operate ...

#87. Future Technology Devices International Ltd. FT4222H - FTDI

Configurable I2C Master/Slave interface controller conforming to I2C v2.1 and v3.0 specification. •. Support 4 speed modes as defined in the I2C-.

#88. Overview :: I2C controller core - OpenCores

The OpenCores I2C Master Core provides an interface between a Wishbone Master and an I2C bus. ... You can find the I2C specifications on Phillips web Site.

#89. Datakey-I2C-EEPROM-Interface-Specification-223-0017-005 ...

The remaining pages in this specification discuss I2C design criteria for portable- memory devices along with how to handle these devices in typical ...

#90. XAPP385: CoolRunner-Ii CPLD I2C Bus Controller ... - Xilinx

diagrams, please refer to the I2C specification. The I2C bus consists of two wires, serial data (SDA) and serial clock (SCL), which carry.

#91. Inter-Integrated Circuit (I2C) - ESP32 - Technical Documents

At this stage, i2c_param_config() also sets a few other I2C configuration parameters to default values that are defined by the I2C specification.

#92. I2C 串列匯流排

當初接這份工作時，剛到公司沒多久，就得用C實作出軟體的SPI介面。說實話，用軟體實做SPI和I2C通訊介面不難，只要照著spec的timing圖動作，就不會錯了， ...

#93. [問題] 求救!!寫不出I2C我就要走路了- 看板Electronics

小弟現在要用PIC16F1824與OZ8920(battery protection IC)通訊，我已經把I2C的spec看完一遍了，也把PIC16F1824的MSSP module稍微看過一輪，但還是不 ...

#94. 淺介I2C

傳送一個起始訊號; 傳送0xC0（電子羅盤CMPS03的I2C位址與讀/寫控制碼”0' ... #define SCL TRISB4 // I2C bus ... 艾鍗學院- MCU韌體開發實戰-I2C Spec

#95. I2C問題案例分析－總線佔用 - 阿嘎的軟體世界

之前解決STM32 MCU的I2C 總線佔用(bus BUSY) 問題，覺得是不錯的學習。文首先解釋I2C ... (參考：I²C – Wikipedia, 成大資工Wiki – I2C, I2C spec) ...

#96. Solved: Falling time of I2C of BHI160 and BMM150 - Bosch ...

There is a I2C Bus between them, which is pin7/21 of BHI160. I measured the waveform. ... Indeed this looks a bit faster than the i2c spec.

#97. DesignWare Inter Integrated Circuit (I2C) | Synopsys

The I2C operation is controlled by software via the APB bus interface. For example, control registers are available to select the target address, 7-bit or 10- ...

#98. Introduction to I2C and SMBus — The Linux Kernel ...

I²C (pronounce: I squared C and written I2C in the kernel documentation) is a ... The official I2C specification is the "I2C-bus specification and user ...

#99. Arduino Internals - 第 68 頁 - Google 圖書結果

The I2C name, logo, specification, and just about everything pertaining to it ... The I2C spec allows up to 127 devices on a bus, although most systems have ...

#100. Microcontrollers: Theory and Applications - 第 190 頁 - Google 圖書結果

... of SCK 1 Data transmitted on rising edge of SCK 1 - C Master or Slave mode : 1 = Input levels conform to SMBUS spec 0 = Input levels conform to I2C spec ...