Add new driver implementations and workspace updates

2026-05-24 00:14:04 +02:00 · 2026-03-27 11:18:29 -04:00
parent 1c02ebd76e
commit bef5e91fbf
7844 changed files with 30810 additions and 2 deletions
@@ -0,0 +1,47 @@
+/**
+ * FILE: stack.s
+ *
+ * DESCRIPTION:
+ * RP2350 Stack Initialization.
+ * 
+ * BRIEF:
+ * Provides stack pointer initialization for Main and Process Stack
+ * Pointers (MSP/PSP) and their limits.
+ *
+ * AUTHOR: Kevin Thomas
+ * CREATION DATE: November 27, 2025
+ * UPDATE DATE: November 27, 2025
+ */
+
+.syntax unified                                  // use unified assembly syntax
+.cpu cortex-m33                                  // target Cortex-M33 core
+.thumb                                           // use Thumb instruction set
+
+.include "constants.s"
+
+/**
+ * Initialize the .text section. 
+ * The .text section contains executable code.
+ */
+.section .text                                   // code section
+.align 2                                         // align to 4-byte boundary
+
+/**
+ * @brief   Initialize stack pointers.
+ *
+ * @details Sets Main and Process Stack Pointers (MSP/PSP) and their limits.
+ *
+ * @param   None
+ * @retval  None
+ */
+.global Init_Stack
+.type Init_Stack, %function
+Init_Stack:
+  ldr   r0, =STACK_TOP                           // load stack top
+  msr   PSP, r0                                  // set PSP
+  ldr   r0, =STACK_LIMIT                         // load stack limit
+  msr   MSPLIM, r0                               // set MSP limit
+  msr   PSPLIM, r0                               // set PSP limit
+  ldr   r0, =STACK_TOP                           // reload stack top
+  msr   MSP, r0                                  // set MSP
+  bx    lr                                       // return