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| | | /********************************************************************************* |
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| | | * Copyright: (C) 2023 LingYun IoT System Studio. All Rights Reserved. |
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| | | * Copyright: (C) 2023 LingYun IoT System Studio |
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| | | * All rights reserved. |
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| | | * |
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| | | * Filename: at24c.c |
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| | | * Description: This file is AT24Cxx EEPROM code |
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| | | * |
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| | | * Version: 1.0.0(10/08/23) |
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| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
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| | | * ChangeLog: 1, Release initial version on "10/08/23 17:52:00" |
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| | | * |
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| | | * Description: This file is W25Qxx SPI Norflash driver on RaspberryPi 40Pin. |
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| | | * |
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| | | * Pin connection: |
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| | | * W25QXX RaspberryPi 40Pin |
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| | | * VCC <---> 3.3V(Pin#1) |
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| | | * CS <---> CS(Pin#24) |
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| | | * DO <---> MISO(Pin#21) |
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| | | * GND <---> GND(Pin#9) |
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| | | * CLK <---> SCLK(Pin#23) |
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| | | * DI <---> MOSI(Pin#19) |
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| | | * VCC <---> Pin#1 (3.3V) |
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| | | * CS <---> Pin#24(CS) |
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| | | * DO <---> Pin#21(MISO) |
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| | | * GND <---> Pin#9 (GND) |
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| | | * CLK <---> Pin#23(SCLK) |
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| | | * DI <---> Pin#19(MOSI) |
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| | | * |
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| | | * /boot/config.txt: |
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| | | * dtparam=spi=on |
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| | | * |
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| | | ********************************************************************************/ |
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| | | |
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| | | } while ((buf[1] & 0x01) == 0x01); |
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| | | } |
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| | | |
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| | | /*+----------------+ |
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| | | *| dump_buf | |
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| | | *+----------------+*/ |
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| | | /*+----------------------+ |
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| | | *| Misc functions | |
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| | | *+----------------------+*/ |
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| | | |
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| | | void print_buf(const char *prompt, uint8_t *buf, int size) |
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| | | { |
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