- /**************************************************************************//**
- * [url=home.php?mod=space&uid=288409]@file[/url] main.c
- * [url=home.php?mod=space&uid=895143]@version[/url] V1.00
- * [url=home.php?mod=space&uid=247401]@brief[/url] Demonstrate how to use APIs of CIR to convert the output signal of an Infrared Receiver
- *
- * SPDX-License-Identifier: Apache-2.0
- * [url=home.php?mod=space&uid=17282]@CopyRight[/url] (C) 2020 Nuvoton Technology Corp. All rights reserved.
- *****************************************************************************/
- #include <stdio.h>
- #include "NuMicro.h"
- #include "Queue.h"
- uint32_t Queue[MAX_QUEUE];
- /**
- * Receive error int:
- * The CIR_STATUS_RERRF_Msk will be raised if following reasons.
- * 1. The coming pulse width does not meet the upper and lower bound of all patterns.
- * 2. The first pulse width of coming pattern is not header pattern if pattern type is CIR_POSITIVE_EDGE or CIR_NEGATIVE_EDGE.
- *
- * Due to the repeat code appears alone and is not header patteren. It will cause the CIR_STATUS_RERRF_Msk flag to be raised.
- * Programmer needs to judge if the error event caused by repeat code.
- */
- void CIR_IRQHandler(void)
- {
- uint32_t status = CIR_GetIntFlag(CIR0) & CIR_GetEnabledIntMask(CIR0);
- if(status & CIR_STATUS_RERRF_Msk)
- {
- uint32_t u32Hb, u32Lb;
- /*
- * Due to the special pattern (repeat code) out of header pattern and end pattern.
- * It will generate a error event. As raised a error event,
- * programmer needs to judge if the event caused by special pattern.
- */
- CIR_GetPatternBoundary(CIR0, CIR_SPECIAL_PAT, &u32Hb, &u32Lb);
- if((CIR_GetLatchedTimerValue(CIR0)< u32Hb) && (CIR_GetLatchedTimerValue(CIR0) > u32Lb))
- Push(Queue, 0xFFFFFFFF); /* proprietary define repeat code to 0xFFFFFFFF */
- CIR_ClearIntFlag(CIR0, CIR_STATUS_RERRF_Msk);
- }
- else if(status & CIR_STATUS_EPMF_Msk)
- {
- uint32_t u32Data0, u32Data1;
- /* End Patter match int */
- CIR_ClearIntFlag(CIR0, CIR_STATUS_EPMF_Msk);
- CIR_GetData(CIR0, &u32Data0, &u32Data1);
- Push(Queue, u32Data0);
- /* Clear data fields and bit count for next receiving */
- CIR_ClearDataFieldBitCount(CIR0);
- }
- }
- void SYS_Init(void)
- {
- /* 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);
- /* Enable HXT clock */
- CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
- /* Wait for HXT clock ready */
- CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);
- /* Set core clock as 96MHz from PLL */
- CLK_SetCoreClock(FREQ_96MHZ);
- /* Set PCLK0/PCLK1 to HCLK/2 */
- CLK->PCLKDIV = (CLK_PCLKDIV_APB0DIV_DIV2 | CLK_PCLKDIV_APB1DIV_DIV2);
- /* Enable UART module clock */
- CLK_EnableModuleClock(UART0_MODULE);
- /* Enable UART module clock */
- CLK_EnableModuleClock(CIR0_MODULE);
- /* Select UART module clock source as HXT and UART module clock divider as 1 */
- CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UART0SEL_HXT, CLK_CLKDIV0_UART0(1));
- /* Select CIR module clock source as LIRC */
- CLK_SetModuleClock(CIR0_MODULE, CLK_CLKSEL2_CIR0SEL_LIRC, (uint32_t)NULL);
- /* Update System Core Clock */
- SystemCoreClockUpdate();
- /* Set GPB multi-function pins for UART0 RXD and TXD */
- SYS->GPB_MFPH &= ~(SYS_GPB_MFPH_PB12MFP_Msk | SYS_GPB_MFPH_PB13MFP_Msk);
- SYS->GPB_MFPH |= (SYS_GPB_MFPH_PB12MFP_UART0_RXD | SYS_GPB_MFPH_PB13MFP_UART0_TXD);
- /* Set GPC14 multi-function pins for CIR */
- SYS->GPC_MFPH = (SYS->GPC_MFPH & ~SYS_GPC_MFPH_PC14MFP_Msk) | SYS_GPC_MFPH_PC14MFP_CIR0_RXD;
- CLK->PCLKDIV &= ~CLK_PCLKDIV_APB1DIV_Msk;
- /* Lock protected registers */
- SYS_LockReg();
- }
- void UART0_Init(void)
- {
- /* Configure UART0 and set UART0 baud rate */
- UART_Open(UART0, 115200);
- }
- /**
- * Use AI-26C generic remote controller by setting TV system to Panasonic:
- * Pressed "Setup" up to 3 seconds, then pressed "0", "0", "1" to assign the remote controller to operate on Panasonic mode
- *
- * CIR Clock Source From LIRC. T = 30.5us
- *
- * unit: us
- * Header 9100+4450
- * Spec 9065+2282
- * D0 576+557
- * D1 576+1690
- * Stop 542+17000
- */
- void CIR_Init(void)
- {
- CIR_SetClockPrescaler(CIR0, CIR_PRESCALER_1);
- CIR_SetPatternBoundary(CIR0, CIR_HEADER_PAT, ((9100+4450)/26)+15, ((9100+4450)/26)-15);
- CIR_SetPatternBoundary(CIR0, CIR_DATA1_PAT, ((576+1690)/26)+15, ((576+1690)/26)-15);
- CIR_SetPatternBoundary(CIR0, CIR_DATA0_PAT, ((576+557)/26)+15, ((576+557)/26)-15);
- CIR_SetPatternBoundary(CIR0, CIR_SPECIAL_PAT, ((9065+2282)/26)+15, ((9065+2282)/26)-15);
- CIR_SetPatternBoundary(CIR0, CIR_END_PAT, 0, (542+17000)/26);
- CIR_EnableDataCmpWakeup(CIR0, 0x40, 7); /* Enable data compare if received data is 0x38 (8 bits) */
- CIR_EnableRecvBitCountMatch(CIR0, 32); /* Enable bit count compare if bit count compare match with 32 bit */
- CIR_EnableInt(CIR0, CIR_INTCTL_PERRIEN_Msk|CIR_INTCTL_EPMIEN_Msk);
- CIR_SetInputType(CIR0, CIR_POSITIVE_EDGE, CIR_INVERSE);
- NVIC_EnableIRQ(CIR_IRQn);
- CIR_Open(CIR0);
- }
- typedef struct
- {
- char* KeyString;
- uint32_t IrCode0;
- uint32_t u32Len;
- } IR_INFO;
- const IR_INFO Array[] =
- {
- "POWER", 0xED12BF40, 32,
- "IMAGE", 0xEB14BF40, 32,
- "0", 0xFF00BF40, 32,
- "1", 0xFE01BF40, 32,
- "2", 0xFD02BF40, 32,
- "3", 0xFC03BF40, 32,
- "4", 0xFB04BF40, 32,
- "5", 0xFA05BF40, 32,
- "6", 0xF906BF40, 32,
- "7", 0xF807BF40, 32,
- "8", 0xF708BF40, 32,
- "9", 0xF609BF40, 32,
- "TV", 0xEC13BF40, 32,
- "DISPLAY", 0xE916BF40, 32,
- "CATV", 0xAE51BF40, 32,
- "SLEEP", 0xE11EBF40, 32,
- "RETURN", 0xF30CBF40, 32,
- "INPUT", 0xF40BBF40, 32,
- "SILENT", 0xEF10BF40, 32,
- "VOL_UP", 0xE51ABF40, 32,
- "VOL_DN", 0xE11EBF40, 32,
- "VOL_SILENT", 0xE718BF40, 32,
- "CHAN_UP", 0xE41BBF40, 32,
- "CHAN_DN", 0xE01FBF40, 32,
- "REPEAT", 0xFFFFFFFF, 32,
- };
- void CIR_Parsing(void)
- {
- uint32_t u32IrCode;
- uint32_t i;
- do
- {
- if(isEmpty() != 1)
- {
- u32IrCode = Pop(Queue);
- if(u32IrCode != 0xFFFFFFFF)
- {
- for(i=0; i<sizeof(Array)/ sizeof(Array[0]); i=i+1)
- {
- if(u32IrCode == Array[i].IrCode0)
- printf("%s Pressed\n", Array[i].KeyString);
- }
- }
- else
- {
- printf("REPEAT\n");
- }
- }
- }
- while(1);
- }
- int main()
- {
- SYS_Init(); /* Init System, IP clock and multi-function I/O */
- UART0_Init(); /* Initialize UART0 */
- printf("\n");
- printf("+------------------------------------------+\n");
- printf("| M471 CIR Sample Code |\n");
- printf("+------------------------------------------+\n");
- CIR_Init(); /* Base on the remote control to set the timing */
- CIR_Parsing();
- printf("\nCIR Sample Code Completed.\n");
- while (1);
- }
- /*** (C) COPYRIGHT 2020 Nuvoton Technology Corp. ***/
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