- /**************************************************************************//**
- * [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);
- }