mirror of
https://github.com/mytechnotalent/Embedded-Hacking.git
synced 2026-07-16 17:07:34 +02:00
Kevin Thomas
c46bcba401
Public function docstrings belong exclusively in .h headers per coding convention. Only static helper functions and static variables retain docstrings in .c files. Removed 413 duplicate docstrings across 185 files (15 CBM + 15 C SDK projects). All 30 projects rebuild with zero errors.
51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
/**
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******************************************************************************
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* @file main.c
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* @author Kevin Thomas
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* @brief I2C demonstration: scan all 7-bit addresses and report devices.
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*
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* Demonstrates I2C bus scanning using the bare-metal I2C driver.
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* I2C1 is configured at 100 kHz on SDA=GPIO2 / SCL=GPIO3. A
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* formatted hex table of all responding device addresses is
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* printed over UART and repeated every 5 seconds.
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*
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* Wiring:
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* GPIO0 -> UART TX (USB-to-UART adapter RX)
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* GPIO1 -> UART RX (USB-to-UART adapter TX)
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* GPIO2 -> I2C device SDA (4.7 kohm pull-up to 3.3 V)
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* GPIO3 -> I2C device SCL (4.7 kohm pull-up to 3.3 V)
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* 3.3V -> I2C device VCC
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* GND -> I2C device GND
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*
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2026 Kevin Thomas.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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#include "rp2350_i2c.h"
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#include "rp2350_uart.h"
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#include "rp2350_xosc.h"
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#include "rp2350_delay.h"
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#define SCAN_DELAY_MS 5000
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int main(void)
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{
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xosc_set_clk_ref();
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i2c_release_reset();
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i2c_init();
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uart_puts("I2C driver initialized: I2C1 @ 100 kHz SDA=GPIO2 SCL=GPIO3\r\n");
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while (1) {
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i2c_scan();
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delay_ms(SCAN_DELAY_MS);
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}
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}
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