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i2c address 在 Re: [請益] I2C EEPROM Start address - 看板Soft_Job - 批踢踢 ... 的推薦與評價


作者hizuki (入贅桧月家，我妻彩花)
看板Soft_Job
標題Re: [請益] I2C EEPROM Start address
時間Mon Sep 4 15:24:56 2017

※ 引述《vito9580 (vito)》之銘言：
: 各位前輩好，最近在研讀EEPROM 24LC16,但有幾點無法理解，想請教板上的前輩。
:
: (figure.1)
:
: (figure.2)
: 圖一的word address該怎麼給?我查24LC16這顆的spec上並沒有像圖二一樣說明address，
: 並且是否master每傳一次data前的寫入address會不一樣?
: 懇請了解I2C的前輩相救，謝謝
你這邊是page寫入，可以從開始的位置連續寫16 bytes的資料進去。
看Fig 2你就可以明白了，
只需要開始的時候指定block閘道開放，在EEPROM發送ACK後指定
第一個word的位置就可以了。後面這個位置，EEPROM內會自動累加。
後面等Slave發ACK過來後就可以傳送新的一筆資料。
然後你用Stop來停止繼續傳送，無論如何第16筆後收到ACK一定
要發Stop不然，EEPROM的內部buffer會溢出，這時候的結果是未知的。

你還詢問block address與word address。關係是這樣的。

The device is organized as eight blocks of 256 x 8-bit memory
所以block address有3bit，控制你要開放這個八個blocks當中的哪一個。
和操作碼，讀寫位元一起組成address high byte。
Word address是每個block當中的偏移位置，單獨構成address low byte。

--
你比較喜歡哪一個?
當年不是黨國大老但是被江浙財團捧紅的中國帥哥
跟同樣擁兵一方的諸侯約會裁軍結果半途諸侯們爽約，平常有在寫日記的莊嚴男人開始發飆
在旁邊讀著荒漠甘泉冷眼旁觀看著薔薇戰爭的人，為了中國的事情爭吵
別國調侃是不是中國總統，義正詞嚴的說著我是民族的燈塔的威嚴老先生

--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 103.29.142.67
※ 文章網址: https://www.ptt.cc/bbs/Soft_Job/M.1504509901.A.D19.html
※ 編輯: hizuki (103.29.142.67), 09/04/2017 15:37:44
推 yamakazi: 推一個 09/05 00:14
推 vito9580: 謝謝，我會在研究看看 09/08 19:32
推 ian1234321: 你去看24L128的spec 09/25 07:43






... <看更多>

i2c address 在 I2C Address Flags - GitHub Pages 的推薦與評價

Macros. I2C Address Flags ... 10-bit address flag More. ... Specifies the address type for the functions ARM_I2C_MasterReceive, ARM_I2C_MasterTransmit and ... ... <看更多>

i2c address 在 How to resolve I2C address clashes? - Electronics Stack ... 的推薦與評價

There is nothing built into I2C to do this, normally slave devices will have some externals pins that can be set to 0 or 1 to toggle a couple of the address ... ... <看更多>

i2c address 在 MS45x5DO Changing I2C Slave Address - TE Connectivity 的推薦與評價

However, you may find that some of the sensors use the same I2C address (especially if it is the same type of device). This will cause data collisions and make ... ... <看更多>

i2c address 在 Infineon/i2c-utils-optiga-trust - GitHub 的推薦與評價

This program can confuse your I2C bus, cause data loss and worse! It will send a I2C read command from address 0x00 to 0x7F. When probing I2C address, the ... ... <看更多>

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#88. Re: [請益] I2C EEPROM Start address - 看板Soft_Job - 批踢踢 ...

標題Re: [請益] I2C EEPROM Start address. 時間Mon Sep 4 15:24:56 2017. ※ 引述《vito9580 (vito)》之銘言： : 各位前輩好，最近在研讀EEPROM 24LC16,但有幾點無法 ...

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Arduino sketch to update I2C address for GY-530 VL53L0X module * Watch video instruction for this code: https://youtu.be/RRQASevYK3g ...

#90. I2C bus 簡介(Inter-Integrated Circuit Bus) - 傑克! 真是太神奇了 ...

自2006 年11 月1 日起, 在晶片上加入I 2 C 功能已經不需要再支付專利費, 但製造商如果想取得專屬的I 2 C slave 裝置地址則依然需要付費給NXP 公司. 所以現在各 ...

#91. I2C ADDRESS A2h - Maxim Integrated

(4 BYTES). IF ASEL = 0, THEN THE MAIN DEVICE I2C. SLAVE ADDRESS IS A2h. IF ASEL = 1, THEN THE MAIN DEVICE I2C. SLAVE ADDRESS IS DETERMINED BY THE.

#92. i2c信號的ACK與NACK - 台部落

Slave Read Address：0x6d，ID register value：0x88. 20150716看到這裏有點奇怪，i2c write是以ack+stop結束通信，而i2c read是以nack+stop結束通信 ...

#93. 吉哥的分享- 用microbit取得I2C裝置的位址 - Google Sites

I2C 裝置，可以讓我們用SDA以及SCL二條線路就可以控制許多的裝置，這對於腳位已經不多的micro:bit來說，實在是太好了。例如像是LCD1602這種液晶 ...

#94. I2C协议研读（四）：7位地址格式 - CSDN博客

I2C 总线兼容设备必须在接收到START或重复的START条件后复位其总线逻辑，以使它们都预期发送从机地址，即使这些START条件没有按照正确的格式放置。

#95. I2C communication - SparkFun Learn

The original spec allowed for only 100kHz communications, and provided only for 7-bit addresses, limiting the number of devices on the bus to 112 (there are ...

#96. Basics of the I2C Communication Protocol

If an address frame or data frame was successfully received, an ACK bit is returned to the sender from the receiving device. Addressing. I2C doesn't have slave ...