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122 lines
2.9 KiB
122 lines
2.9 KiB
#ifdef TARGET_LPC1768
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// ---------------------
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// Userspace entry point
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// ---------------------
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extern void setup();
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extern void loop();
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extern "C" {
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#include <lpc17xx_gpio.h>
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}
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#include <usb/usb.h>
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#include <usb/usbcfg.h>
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#include <usb/usbhw.h>
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#include <usb/usbcore.h>
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#include <usb/cdc.h>
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#include <usb/cdcuser.h>
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#include <usb/mscuser.h>
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extern "C" {
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#include <debug_frmwrk.h>
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#include <chanfs/diskio.h>
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#include <chanfs/ff.h>
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}
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#include "../../inc/MarlinConfig.h"
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#include "HAL.h"
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#include "fastio.h"
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#include "HAL_timers.h"
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#include <stdio.h>
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#include <stdarg.h>
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#include <Arduino.h>
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#include "serial.h"
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#include "LPC1768_PWM.h"
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static __INLINE uint32_t SysTick_Config(uint32_t ticks) {
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if (ticks > SysTick_LOAD_RELOAD_Msk)
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return (1); /* Reload value impossible */
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SysTick->LOAD = (ticks & SysTick_LOAD_RELOAD_Msk) - 1; /* set reload register */
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NVIC_SetPriority(SysTick_IRQn, NVIC_EncodePriority(0, 0, 0)); /* set Priority for Cortex-M3 System Interrupts */
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SysTick->VAL = 0; /* Load the SysTick Counter Value */
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SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk |
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SysTick_CTRL_TICKINT_Msk |
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SysTick_CTRL_ENABLE_Msk; /* Enable SysTick IRQ and SysTick Timer */
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return (0); /* Function successful */
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}
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extern "C" {
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extern void disk_timerproc(void);
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volatile uint32_t _millis;
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void SysTick_Handler(void) {
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++_millis;
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disk_timerproc(); /* Disk timer process */
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}
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}
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// runs after clock init and before global static constructors
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extern "C" void SystemPostInit() {
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_millis = 0; // initialise the millisecond counter value;
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SysTick_Config(SystemCoreClock / 1000); // start millisecond global counter
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GPIO_SetDir(4, 1UL << 28, 1);
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for (int i = 0; i < 4; ++i) {
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GPIO_SetValue(4, 1UL << 28);
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delay(100);
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GPIO_ClearValue(4, 1UL << 28);
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delay(100);
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}
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}
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// detect 17x[4-8] (100MHz) or 17x9 (120MHz)
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static bool isLPC1769() {
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#define IAP_LOCATION 0x1FFF1FF1
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uint32_t command[1];
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uint32_t result[5];
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typedef void (*IAP)(uint32_t*, uint32_t*);
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IAP iap = (IAP) IAP_LOCATION;
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command[0] = 54;
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iap(command, result);
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return ((result[1] & 0x00100000) != 0);
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}
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extern uint32_t MSC_SD_Init(uint8_t pdrv);
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int main(void) {
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(void)MSC_SD_Init(0);
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USB_Init(); // USB Initialization
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USB_Connect(TRUE); // USB Connect
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const uint32_t usb_timeout = millis() + 2000;
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while (!USB_Configuration && PENDING(millis(), usb_timeout)) {
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delay(50);
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#if PIN_EXISTS(LED)
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TOGGLE(LED_PIN); // Flash fast while USB initialisation completes
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#endif
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}
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#if NUM_SERIAL > 0
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MYSERIAL0.begin(BAUDRATE);
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#if NUM_SERIAL > 1
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MYSERIAL1.begin(BAUDRATE);
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#endif
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SERIAL_PRINTF("\n\n%s (%dMhz) UART0 Initialised\n", isLPC1769() ? "LPC1769" : "LPC1768", SystemCoreClock / 1000000);
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SERIAL_FLUSHTX();
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#endif
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HAL_timer_init();
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LPC1768_PWM_init();
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setup();
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for (;;) loop();
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}
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#endif // TARGET_LPC1768
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