83 lines
2.9 KiB
C
83 lines
2.9 KiB
C
/**
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* @file main.c
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* @brief Entry: clock update, USART banner, LED init, create tasks, start scheduler.
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*/
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#include "n32wb03x.h"
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#include <stdio.h>
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#include "FreeRTOS.h"
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#include "task.h"
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#include "bsp_usart.h"
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#include "bsp_led.h"
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#include "app_tasks.h"
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#include "app_cli.h"
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#include "app_ble.h"
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#include "app_version.h"
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/* APP1 link base: the vector table lives at the start of the APP1 bank.
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* Cortex-M0 has no SCB->VTOR; this chip remaps vectors via PWR->VTOR_REG
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* (bit31 = enable, [30:0] = vector base). The SDK SystemInit() sets it to
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* 0x81000000 (bootloader region at 0x01000000), so before the BLE stack is
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* initialized the APP points VTOR at its own table (needed by USART1 RX IRQ).
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*
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* IMPORTANT: ns_ble_stack_init() clears VTOR to 0 ON PURPOSE: from then on
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* all exceptions are dispatched through the chip-ROM trampolines + RAM relay
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* (ns_ble_stack_vtor_init() copies our __Vectors to 0x200000e8/0x200009c0 and
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* patches BLE_FIFO/BLE_SLP/EXTI4_12 to ROM/RAM handlers). Do NOT restore VTOR
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* after app_ble_init() — with VTOR = flash base the BLE FIFO interrupt would
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* land in the weak Default_Handler and hang the CPU. */
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#define APP_VTOR_VALUE (0x80000000u | 0x01008000u)
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/**
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* @brief Main program.
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*/
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int main(void)
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{
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/* Power-on delay ~2s, same as the SDK BLE demos (rdtss / heart_rate):
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* lets the analog blocks and the LSI 32kHz settle before the BLE stack
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* init (and keeps SWD reachable for a while after reset). */
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for (volatile uint32_t i = 0; i < 32000000u; i++)
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{
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__nop();
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}
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/* Update SystemCoreClock (configured to 64MHz HSI by SystemInit) */
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SystemCoreClockUpdate();
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/* Remap the vector table to this APP before any interrupt is enabled */
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PWR->VTOR_REG = APP_VTOR_VALUE;
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/* USART1 init, print startup banner before the scheduler runs */
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bsp_usart_init();
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printf("\n========================================\n");
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printf(" N32WB031 FreeRTOS + UART + LED demo\n");
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printf(" Firmware version %s\n", APP_FW_VERSION);
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printf(" SystemCoreClock = %lu Hz\n", (unsigned long)SystemCoreClock);
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printf(" BLE enabled, advertising as \"%s\"\n", "CAIIC-MCM");
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printf("========================================\n");
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/* LED1(PB0) / LED2(PA6) init */
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bsp_led_init();
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/* BLE stack init + start advertising + create the BLE schedule task.
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* NOTE: ns_ble_stack_init() clears PWR->VTOR_REG so that interrupts are
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* dispatched via the ROM trampoline + RAM relay (initialized from our
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* __Vectors). VTOR must stay 0 from here on - do not restore it. */
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app_ble_init();
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/* Create log queue and tasks (LedTask, LedTask2, PrintTask) */
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AppTasks_CreateAll();
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/* Create the CLI task (command parsing/execution/response) */
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AppCli_Init();
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/* Start the FreeRTOS scheduler (port configures SysTick itself) */
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vTaskStartScheduler();
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/* We should never get here as control is now taken by the scheduler */
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for (;;)
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{
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}
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}
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