/**************************************************************************//**
* [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 PDMA 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 5
volatile uint32_t g_au32RED_Marquee0[TEST_COUNT] = {0x000000FF, 0x00000000, 0x00000000, 0x00000000, 0x00000000};
volatile uint32_t g_au32RED_Marquee1[TEST_COUNT] = {0xFF000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000};
volatile uint32_t g_au32RED_Marquee2[TEST_COUNT] = {0x00000000, 0x00FF0000, 0x00000000, 0x00000000, 0x00000000};
volatile uint32_t g_au32RED_Marquee3[TEST_COUNT] = {0x00000000, 0x00000000, 0x0000FF00, 0x00000000, 0x00000000};
volatile uint32_t g_au32RED_Marquee4[TEST_COUNT] = {0x00000000, 0x00000000, 0x00000000, 0x000000FF, 0x00000000};
volatile uint32_t g_au32RED_Marquee5[TEST_COUNT] = {0x00000000, 0x00000000, 0x00000000, 0xFF000000, 0x00000000};
volatile uint32_t g_au32RED_Marquee6[TEST_COUNT] = {0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000};
volatile uint32_t g_u32PatternToggle = 0;
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);
/* Enable PDMA peripheral clock */
CLK_EnableModuleClock(PDMA_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 PDMA 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_PDMA, LLSI_FORMAT_GRB, 72000000, 1250, 400, 850, 50000, 6, LLSI_IDLE_LOW);
/* Enable reset command function */
LLSI_ENABLE_RESET_COMMAND(LLSI0);
}
/*---------------------------------------------------------------------------------------------------------*/
/* 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 (PDMA Mode) |\n");
printf("+------------------------------------------------+\n");
printf("The first to sixth LEDs will flash red in sequence.\n\n");
/* Reset PDMA module */
SYS_ResetModule(PDMA_RST);
/* Open Channel 0 */
PDMA_Open(1 << 0);
/* Transfer count is TEST_COUNT, transfer width is 32 bits(one word) */
PDMA_SetTransferCnt(0, PDMA_WIDTH_32, TEST_COUNT);
/* Transfer type is single transfer */
PDMA_SetBurstType(0, PDMA_REQ_SINGLE, 0);
/* Set source address is g_au32RED_Marquee0, destination address is &LLSI0->DATA */
PDMA_SetTransferAddr(0, (uint32_t)g_au32RED_Marquee0, PDMA_SAR_INC, (uint32_t)&LLSI0->DATA, PDMA_DAR_FIX);
/* Request source is LLSI0 */
PDMA_SetTransferMode(0, PDMA_LLSI0, FALSE, 0);
/* Init LLSI */
LLSI_Init();
while(g_u32PatternToggle < 7)
{
CLK_SysTickDelay(100000);
g_u32PatternToggle++;
/* Reset PDMA module */
SYS_ResetModule(PDMA_RST);
/* Open Channel 0 */
PDMA_Open(1 << 0);
/* Transfer count is TEST_COUNT, transfer width is 32 bits(one word) */
PDMA_SetTransferCnt(0, PDMA_WIDTH_32, TEST_COUNT);
/* Transfer type is single transfer */
PDMA_SetBurstType(0, PDMA_REQ_SINGLE, 0);
if(g_u32PatternToggle == 1)
{
/* Set source address is g_au32RED_Marquee1, destination address is &LLSI0->DATA */
PDMA_SetTransferAddr(0, (uint32_t)g_au32RED_Marquee1, PDMA_SAR_INC, (uint32_t)&LLSI0->DATA, PDMA_DAR_FIX);
}
else if(g_u32PatternToggle == 2)
{
/* Set source address is g_au32RED_Marquee2, destination address is &LLSI0->DATA */
PDMA_SetTransferAddr(0, (uint32_t)g_au32RED_Marquee2, PDMA_SAR_INC, (uint32_t)&LLSI0->DATA, PDMA_DAR_FIX);
}
else if(g_u32PatternToggle == 3)
{
/* Set source address is g_au32RED_Marquee3, destination address is &LLSI0->DATA */
PDMA_SetTransferAddr(0, (uint32_t)g_au32RED_Marquee3, PDMA_SAR_INC, (uint32_t)&LLSI0->DATA, PDMA_DAR_FIX);
}
else if(g_u32PatternToggle == 4)
{
/* Set source address is g_au32RED_Marquee4, destination address is &LLSI0->DATA */
PDMA_SetTransferAddr(0, (uint32_t)g_au32RED_Marquee4, PDMA_SAR_INC, (uint32_t)&LLSI0->DATA, PDMA_DAR_FIX);
}
else if(g_u32PatternToggle == 5)
{
/* Set source address is g_au32RED_Marquee5, destination address is &LLSI0->DATA */
PDMA_SetTransferAddr(0, (uint32_t)g_au32RED_Marquee5, PDMA_SAR_INC, (uint32_t)&LLSI0->DATA, PDMA_DAR_FIX);
}
else if(g_u32PatternToggle == 6)
{
/* Set source address is g_au32RED_Marquee6, destination address is &LLSI0->DATA */
PDMA_SetTransferAddr(0, (uint32_t)g_au32RED_Marquee6, PDMA_SAR_INC, (uint32_t)&LLSI0->DATA, PDMA_DAR_FIX);
}
/* Request source is LLSI0 */
PDMA_SetTransferMode(0, PDMA_LLSI0, FALSE, 0);
}
/* Close LLSI0 */
LLSI_Close(LLSI0);
printf("Exit LLSI sample code.\n");
while(1);
}
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