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Add bare-metal I2C driver for RP2350 (0x07_i2c_cbm)

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Kevin Thomas
2026-04-05 17:43:31 -04:00
parent 70a12a85e7
commit 2dc29e4d63
29 changed files with 2239 additions and 0 deletions
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drivers/0x07_i2c_cbm/Src/rp2350_stack.c
+38
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/**
******************************************************************************
* @file rp2350_stack.c
* @author Kevin Thomas
* @brief Stack pointer initialization for RP2350.
*
* Sets MSP, PSP, MSPLIM, and PSPLIM using inline assembly.
*
******************************************************************************
* @attention
*
* Copyright (c) 2026 Kevin Thomas.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
#include "rp2350_stack.h"
void stack_init(void)
{
__asm__ volatile (
"ldr r0, =%0\n\t"
"msr PSP, r0\n\t"
"ldr r0, =%1\n\t"
"msr MSPLIM, r0\n\t"
"msr PSPLIM, r0\n\t"
"ldr r0, =%0\n\t"
"msr MSP, r0\n\t"
:
: "i" (STACK_TOP), "i" (STACK_LIMIT)
: "r0"
);
}