/***************************************************************************//**
* @file main.c
* @brief
* Demonstrate how to upgrade firmware between USB device and PC through USB DFU( Device Firmware Upgrade) class.
* A windows tool is also included in this sample code to connect with USB device.
*
* @CopyRight (C) 2019 Nuvoton Technology Corp. All rights reserved.
******************************************************************************/
#include <stdio.h>
#include "NuMicro.h"
#include "fmc_user.h"
#include "dfu_transfer.h"
uint32_t CLK_GetPLLClockFreq(void)
{
return FREQ_192MHZ;
}
void SYS_Init(void)
{
uint32_t volatile i;
/* Unlock protected registers */
SYS_UnlockReg();
/* Set XT1_OUT(PF.2) and XT1_IN(PF.3) to input mode */
PF->MODE &= ~(GPIO_MODE_MODE2_Msk | GPIO_MODE_MODE3_Msk);
CLK->PWRCTL |= (CLK_PWRCTL_HIRCEN_Msk | CLK_PWRCTL_HXTEN_Msk);
CLK->CLKSEL0 = (CLK->CLKSEL0 & (~CLK_CLKSEL0_HCLKSEL_Msk)) | CLK_CLKSEL0_HCLKSEL_HIRC;
// Waiting for clock switching ok
while (CLK->STATUS & CLK_STATUS_CLKSFAIL_Msk);
CLK->PLLCTL = CLK_PLLCTL_PD_Msk; // Disable PLL
CLK->PLLCTL = 0x8842E; // Enable PLL & set frequency 192MHz
while (!(CLK->STATUS & CLK_STATUS_PLLSTB_Msk));
/* Enable External XTAL (4~24 MHz) */
CLK->PWRCTL |= CLK_PWRCTL_HXTEN_Msk;
while ((CLK->STATUS & CLK_STATUS_PLLSTB_Msk) != CLK_STATUS_PLLSTB_Msk);
CLK->CLKDIV0 = CLK->CLKDIV0 & (~CLK_CLKDIV0_HCLKDIV_Msk); /* PLL/1 */
CLK->CLKSEL0 = (CLK->CLKSEL0 & (~CLK_CLKSEL0_HCLKSEL_Msk)) | CLK_CLKSEL0_HCLKSEL_PLL;
/* Set both PCLK0 and PCLK1 as HCLK/2 */
CLK->PCLKDIV = CLK_PCLKDIV_APB0DIV_DIV2 | CLK_PCLKDIV_APB1DIV_DIV2;
SYS->USBPHY &= ~SYS_USBPHY_HSUSBROLE_Msk; /* select HSUSBD */
/* Enable USB PHY */
SYS->USBPHY = (SYS->USBPHY & ~(SYS_USBPHY_HSUSBROLE_Msk | SYS_USBPHY_HSUSBACT_Msk)) | SYS_USBPHY_HSUSBEN_Msk;
for (i = 0; i < 0x1000; i++); // delay > 10 us
SYS->USBPHY |= SYS_USBPHY_HSUSBACT_Msk;
/* Enable IP clock */
CLK->AHBCLK |= CLK_AHBCLK_HSUSBDCKEN_Msk; /* USBD20 */
}
void USBD20_IRQHandler(void);
/*---------------------------------------------------------------------------------------------------------*/
/* Main Function */
/*---------------------------------------------------------------------------------------------------------*/
int32_t main(void)
{
SYS_Init();
FMC->ISPCTL |= FMC_ISPCTL_ISPEN_Msk; // (1ul << 0)
g_apromSize = GetApromSize();
GetDataFlashInfo(&g_dataFlashAddr, &g_dataFlashSize);
if (DetectPin != 0)
{
goto _APROM;
}
/* Open USB controller */
HSUSBD_Open(NULL, DFU_ClassRequest, NULL);
/*Init Endpoint configuration for DFU */
DFU_Init();
/* Start transaction */
HSUSBD_CLR_SE0();
/* polling USBD interrupt flag */
while (DetectPin == 0)
{
USBD20_IRQHandler();
}
_APROM:
outpw(&SYS->RSTSTS, 3);//clear bit
outpw(&FMC->ISPCTL, inpw(&FMC->ISPCTL) & 0xFFFFFFFC);
outpw(&SCB->AIRCR, (V6M_AIRCR_VECTKEY_DATA | V6M_AIRCR_SYSRESETREQ));
/* Trap the CPU */
while (1);
}
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