/**************************************************************************//**
* [url=home.php?mod=space&uid=288409]@file[/url] main.c
* [url=home.php?mod=space&uid=895143]@version[/url] V3.00
* [url=home.php?mod=space&uid=247401]@brief[/url] This is a LLSI demo for marquee display in software mode.
* It needs to be used with WS2812 LED strip.
*
* @note
* [url=home.php?mod=space&uid=17282]@CopyRight[/url] SPDX-License-Identifier: Apache-2.0
* @copyright Copyright (C) 2021 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#include <stdio.h>
#include "NuMicro.h"
#define TEST_COUNT 1
volatile uint32_t g_au32RED_Marquee[TEST_COUNT] = {0x00000000};
volatile uint32_t g_u32PatternToggle = 0;
volatile uint32_t g_u32DataCount = 0;
void LLSI0_IRQHandler()
{
if(LLSI_GetIntFlag(LLSI0, LLSI_TXTH_INT_MASK))
{
while(g_u32DataCount < TEST_COUNT)
{
if(g_u32DataCount == (TEST_COUNT - 1))
LLSI_SET_LAST_DATA(LLSI0);
LLSI_WRITE_DATA(LLSI0, g_au32RED_Marquee[g_u32DataCount++]);
}
if(g_u32DataCount >= TEST_COUNT)
{
LLSI_DisableInt(LLSI0, LLSI_TXTH_INT_MASK);
}
}
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable HIRC clock */
CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
/* Wait for HIRC clock ready */
CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
/* Set core clock to 72MHz */
CLK_SetCoreClock(72000000);
/* Enable UART0 module clock */
CLK_EnableModuleClock(UART0_MODULE);
/* Select UART0 module clock source as HIRC/2 and UART0 module clock divider as 1 */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UART0SEL_HIRC_DIV2, CLK_CLKDIV0_UART0(1));
/* Enable LLSI0 module clock */
CLK_EnableModuleClock(LLSI0_MODULE);
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PB multi-function pins for UART0 RXD and TXD */
SYS->GPB_MFPH = (SYS->GPB_MFPH & (~(UART0_RXD_PB12_Msk | UART0_TXD_PB13_Msk))) | UART0_RXD_PB12 | UART0_TXD_PB13;
/* Set PB multi-function pins for LLSI0 */
SYS->GPB_MFPH = (SYS->GPB_MFPH & ~(SYS_GPB_MFPH_PB15MFP_Msk)) | SYS_GPB_MFPH_PB15MFP_LLSI0_OUT;
}
void UART0_Init()
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init UART */
/*---------------------------------------------------------------------------------------------------------*/
/* Reset UART0 module */
SYS_ResetModule(UART0_RST);
/* Configure UART0 and set UART0 Baudrate */
UART_Open(UART0, 115200);
}
void LLSI_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init LLSI */
/*---------------------------------------------------------------------------------------------------------*/
/* Configure as software mode, GRB output format, 6 pixels in a frame and idle output low */
/* Set clock divider. LLSI clock rate = 72MHz */
/* Set data transfer period. T_Period = 1250ns */
/* Set duty period. T_T0H = 400ns; T_T1H = 850ns */
/* Set reset command period. T_ResetPeriod = 50000ns */
LLSI_Open(LLSI0, LLSI_MODE_SW, LLSI_FORMAT_GRB, 72000000, 1250, 400, 850, 50000, 6, LLSI_IDLE_LOW);
/* Set TX FIFO threshold, enable TX FIFO threshold interrupt */
LLSI_SetFIFO(LLSI0, 2);
LLSI_EnableInt(LLSI0, LLSI_TXTH_INT_MASK);
/* Enable reset command function */
LLSI_ENABLE_RESET_COMMAND(LLSI0);
NVIC_EnableIRQ(LLSI0_IRQn);
}
/*---------------------------------------------------------------------------------------------------------*/
/* MAIN function */
/*---------------------------------------------------------------------------------------------------------*/
int main(void)
{
/* Unlock protected registers */
SYS_UnlockReg();
/* Init System, IP clock and multi-function I/O. */
SYS_Init();
/* Lock protected registers */
SYS_LockReg();
/* Init UART0 for printf */
UART0_Init();
printf("\n\nCPU [url=home.php?mod=space&uid=72445]@[/url] %d Hz\n", SystemCoreClock);
printf("+------------------------------------------------+\n");
printf("| LLSI Marquee Sample Code (Software Mode) |\n");
printf("+------------------------------------------------+\n");
printf("The first to sixth LEDs will flash red in sequence.\n\n");
/* Init LLSI */
LLSI_Init();
/* Write 4 word data to LLSI_DATA */
LLSI_WRITE_DATA(LLSI0, 0x000000FF);
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_WRITE_DATA(LLSI0, 0x00000000);
while(g_u32PatternToggle < 7)
{
CLK_SysTickDelay(100000);
g_u32DataCount = 0;
g_u32PatternToggle++;
if(g_u32PatternToggle == 1)
{
LLSI_WRITE_DATA(LLSI0, 0xFF000000);
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_EnableInt(LLSI0, LLSI_TXTH_INT_MASK);
}
else if(g_u32PatternToggle == 2)
{
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_WRITE_DATA(LLSI0, 0x00FF0000);
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_EnableInt(LLSI0, LLSI_TXTH_INT_MASK);
}
else if(g_u32PatternToggle == 3)
{
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_WRITE_DATA(LLSI0, 0x0000FF00);
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_EnableInt(LLSI0, LLSI_TXTH_INT_MASK);
}
else if(g_u32PatternToggle == 4)
{
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_WRITE_DATA(LLSI0, 0x000000FF);
LLSI_EnableInt(LLSI0, LLSI_TXTH_INT_MASK);
}
else if(g_u32PatternToggle == 5)
{
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_WRITE_DATA(LLSI0, 0xFF000000);
LLSI_EnableInt(LLSI0, LLSI_TXTH_INT_MASK);
}
else if(g_u32PatternToggle == 6)
{
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_WRITE_DATA(LLSI0, 0x00000000);
LLSI_EnableInt(LLSI0, LLSI_TXTH_INT_MASK);
}
}
/* Close LLSI0 */
LLSI_Close(LLSI0);
printf("Exit LLSI sample code.\n");
while(1);
}