/**************************************************************************//**
* [url=home.php?mod=space&uid=288409]@file[/url] main.c
* [url=home.php?mod=space&uid=895143]@version[/url] V3.00
* $Revision: 5 $
* $Date: 18/07/16 10:28a $
* @brief
* Transmit and receive UART data with PDMA.
*
* @note
* SPDX-License-Identifier: Apache-2.0
* Copyright (C) 2016 Nuvoton Technology Corp. All rights reserved.
*
******************************************************************************/
#include <stdio.h>
#include "NuMicro.h"
#define PLLCTL_SETTING CLK_PLLCTL_72MHz_HXT
#define PLL_CLOCK 72000000
#define UART_RX_DMA_CH 0
#define UART_TX_DMA_CH 1
/*---------------------------------------------------------------------------------------------------------*/
/* Global variables */
/*---------------------------------------------------------------------------------------------------------*/
int32_t UART_TEST_LENGTH = 64;
uint8_t SrcArray[64];
uint8_t DestArray[64];
volatile int32_t IntCnt;
volatile int32_t IsTestOver;
volatile uint32_t g_u32TwoChannelPdmaTest = 0;
/*---------------------------------------------------------------------------------------------------------*/
/* Define functions prototype */
/*---------------------------------------------------------------------------------------------------------*/
int32_t main(void);
/*---------------------------------------------------------------------------------------------------------*/
/* Clear buffer funcion */
/*---------------------------------------------------------------------------------------------------------*/
void ClearBuf(uint32_t u32Addr, uint32_t u32Length, uint8_t u8Pattern)
{
uint8_t* pu8Ptr;
uint32_t i;
pu8Ptr = (uint8_t *)u32Addr;
for(i = 0; i < u32Length; i++)
{
*pu8Ptr++ = u8Pattern;
}
}
/*---------------------------------------------------------------------------------------------------------*/
/* Bulid Src Pattern function */
/*---------------------------------------------------------------------------------------------------------*/
void BuildSrcPattern(uint32_t u32Addr, uint32_t u32Length)
{
uint32_t i = 0, j, loop;
uint8_t* pAddr;
pAddr = (uint8_t *)u32Addr;
do
{
if(u32Length > 256)
loop = 256;
else
loop = u32Length;
u32Length = u32Length - loop;
for(j = 0; j < loop; j++)
*pAddr++ = (uint8_t)(j + i);
i++;
}
while((loop != 0) || (u32Length != 0));
}
/*---------------------------------------------------------------------------------------------------------*/
/* UART Tx PDMA Channel Configuration */
/*---------------------------------------------------------------------------------------------------------*/
void PDMA_UART_TxTest(void)
{
/* UART Tx PDMA channel configuration */
PDMA->DSCT[UART_TX_DMA_CH].CTL =
(UART_TEST_LENGTH - 1) << PDMA_DSCT_CTL_TXCNT_Pos | /* Transfer count */
PDMA_WIDTH_8 | /* Transfer width 8 bits */
PDMA_DAR_FIX | /* Fixed destination address */
PDMA_SAR_INC | /* Increment source address */
PDMA_DSCT_CTL_TBINTDIS_Msk | /* Table interrupt disabled */
PDMA_REQ_SINGLE | /* Single request type */
PDMA_OP_BASIC; /* Basic mode */
PDMA->DSCT[UART_TX_DMA_CH].SA = (uint32_t)SrcArray; /* Source address */
PDMA->DSCT[UART_TX_DMA_CH].DA = (uint32_t)&UART1->DAT; /* Destination address */
/* Request source selection */
PDMA->REQSEL0_3 = (PDMA->REQSEL0_3 & (~PDMA_REQSEL0_3_REQSRC1_Msk)) | (PDMA_UART1_TX << PDMA_REQSEL0_3_REQSRC1_Pos);
}
/*---------------------------------------------------------------------------------------------------------*/
/* UART Rx PDMA Channel Configuration */
/*---------------------------------------------------------------------------------------------------------*/
void PDMA_UART_RxTest(void)
{
/* UART Rx PDMA channel configuration */
PDMA->DSCT[UART_RX_DMA_CH].CTL =
(UART_TEST_LENGTH - 1) << PDMA_DSCT_CTL_TXCNT_Pos | /* Transfer count */
PDMA_WIDTH_8 | /* Transfer width 8 bits */
PDMA_DAR_INC | /* Increment destination address */
PDMA_SAR_FIX | /* Fixed source address */
PDMA_DSCT_CTL_TBINTDIS_Msk | /* Table interrupt disabled */
PDMA_REQ_SINGLE | /* Single request type */
PDMA_OP_BASIC; /* Basic mode */
PDMA->DSCT[UART_RX_DMA_CH].SA = (uint32_t)&UART1->DAT; /* Source address */
PDMA->DSCT[UART_RX_DMA_CH].DA = (uint32_t)DestArray; /* Destination address */
/* Request source selection */
PDMA->REQSEL0_3 = (PDMA->REQSEL0_3 & (~PDMA_REQSEL0_3_REQSRC0_Msk)) | (PDMA_UART1_RX << PDMA_REQSEL0_3_REQSRC0_Pos);
}
/*---------------------------------------------------------------------------------------------------------*/
/* PDMA Callback function */
/*---------------------------------------------------------------------------------------------------------*/
void PDMA_Callback_0(void)
{
printf("\tTransfer Done %d!\r", ++IntCnt);
/* Use PDMA to do UART loopback test 10 times */
if(IntCnt < 10)
{
/* UART Tx and Rx PDMA configuration */
PDMA_UART_TxTest();
PDMA_UART_RxTest();
/* Enable UART Tx and Rx PDMA function */
UART1->INTEN |= (UART_INTEN_RXPDMAEN_Msk | UART_INTEN_TXPDMAEN_Msk);
}
else
{
/* Test is over */
IsTestOver = TRUE;
}
}
void PDMA_Callback_1(void)
{
int32_t i ;
printf("\tTransfer Done %d!\t", ++IntCnt);
/* Show UART Rx data */
for(i = 0; i < UART_TEST_LENGTH; i++)
printf(" 0x%x(%c),", inpb(((uint32_t)DestArray + i)), inpb(((uint32_t)DestArray + i)));
printf("\n");
/* Use PDMA to do UART Rx test 10 times */
if(IntCnt < 10)
{
/* UART Rx PDMA configuration */
PDMA_UART_RxTest();
/* Enable UART Rx PDMA function */
UART1->INTEN |= UART_INTEN_RXPDMAEN_Msk;
}
else
{
/* Test is over */
IsTestOver = TRUE;
}
}
void PDMA_IRQHandler(void)
{
/* Get PDMA interrupt status */
uint32_t status = PDMA_GET_INT_STATUS(PDMA);
uint32_t u32ABTSTS = PDMA->ABTSTS;
if(status & PDMA_INTSTS_ABTIF_Msk) /* Target Abort */
{
IsTestOver = 2;
PDMA->ABTSTS = u32ABTSTS;
}
else if(status & PDMA_INTSTS_TDIF_Msk) /* Transfer Done */
{
/* UART Tx PDMA transfer done interrupt flag */
if(PDMA_GET_TD_STS(PDMA) & (1 << UART_TX_DMA_CH))
{
/* Clear PDMA transfer done interrupt flag */
PDMA_CLR_TD_FLAG(PDMA, (1 << UART_TX_DMA_CH));
/* Disable UART Tx PDMA function */
UART1->INTEN &= ~UART_INTEN_TXPDMAEN_Msk;
}
/* UART Rx PDMA transfer done interrupt flag */
if(PDMA_GET_TD_STS(PDMA) & (1 << UART_RX_DMA_CH))
{
/* Clear PDMA transfer done interrupt flag */
PDMA_CLR_TD_FLAG(PDMA, (1 << UART_RX_DMA_CH));
/* Disable UART Rx PDMA function */
UART1->INTEN &= ~UART_INTEN_RXPDMAEN_Msk;
/* Handle PDMA transfer done interrupt event */
if(g_u32TwoChannelPdmaTest == 1)
{
PDMA_Callback_0();
}
else if(g_u32TwoChannelPdmaTest == 0)
{
PDMA_Callback_1();
}
}
}
else
{
printf("unknown interrupt, status=0x%x !!\n", status);
}
}
/*---------------------------------------------------------------------------------------------------------*/
/* ISR to handle UART Channel 0 interrupt event */
/*---------------------------------------------------------------------------------------------------------*/
void UART02_IRQHandler(void)
{
/* Get UART0 Rx data and send the data to UART1 Tx */
if(UART_GET_INT_FLAG(UART0, UART_INTSTS_RDAIF_Msk))
UART1->DAT = UART0->DAT;
}
/*---------------------------------------------------------------------------------------------------------*/
/* PDMA Sample Code: */
/* i32option : ['1'] UART1 TX/RX PDMA Loopback */
/* [Others] UART1 RX PDMA test */
/*---------------------------------------------------------------------------------------------------------*/
void PDMA_UART(int32_t i32option)
{
/* Source data initiation */
BuildSrcPattern((uint32_t)SrcArray, UART_TEST_LENGTH);
ClearBuf((uint32_t)DestArray, UART_TEST_LENGTH, 0xFF);
/* Reset PDMA module */
SYS->IPRST0 |= SYS_IPRST0_PDMARST_Msk;
SYS->IPRST0 &= ~SYS_IPRST0_PDMARST_Msk;
if(i32option == '1')
{
printf(" [Using TWO PDMA channel].\n");
printf(" This sample code will use PDMA to do UART1 loopback test 10 times.\n");
printf(" Please connect UART1_RXD(PB.2) <--> UART1_TXD(PB.3) before testing.\n");
printf(" After connecting PB.2 <--> PB.3, press any key to start transfer.\n");
g_u32TwoChannelPdmaTest = 1;
getchar();
}
else
{
UART_TEST_LENGTH = 2; /* Test Length */
printf(" [Using ONE PDMA channel].\n");
printf(" This sample code will use PDMA to do UART1 Rx test 10 times.\n");
printf(" Please connect UART1_RXD(PB.2) <--> UART1_TXD(PB.3) before testing.\n");
printf(" After connecting PB.2 <--> PB.3, press any key to start transfer.\n");
g_u32TwoChannelPdmaTest = 0;
getchar();
printf(" Please input %d bytes to trigger PDMA one time.(Ex: Press 'a''b')\n", UART_TEST_LENGTH);
}
if(g_u32TwoChannelPdmaTest == 1)
{
/* Enable PDMA channel */
PDMA->CHCTL |= ((1 << UART_RX_DMA_CH) | (1 << UART_TX_DMA_CH));
/* UART Tx and Rx PDMA configuration */
PDMA_UART_TxTest();
PDMA_UART_RxTest();
/* Enable PDMA Transfer Done Interrupt */
PDMA->INTEN |= ((1 << UART_TX_DMA_CH) | (1 << UART_RX_DMA_CH));
}
else
{
/* Enable PDMA channel */
PDMA->CHCTL |= (1 << UART_RX_DMA_CH);
/* UART Rx PDMA configuration */
PDMA_UART_RxTest();
/* Enable PDMA Transfer Done Interrupt */
PDMA->INTEN |= (1 << UART_RX_DMA_CH);
}
/* Enable PDMA Transfer Done Interrupt */
IntCnt = 0;
IsTestOver = FALSE;
NVIC_EnableIRQ(PDMA_IRQn);
/* Enable UART0 RDA interrupt */
if(g_u32TwoChannelPdmaTest == 0)
{
UART0->INTEN |= UART_INTEN_RDAIEN_Msk;
NVIC_EnableIRQ(UART02_IRQn);
}
/* Enable UART Tx and Rx PDMA function */
if(g_u32TwoChannelPdmaTest == 1)
UART1->INTEN |= UART_INTEN_TXPDMAEN_Msk;
else
UART1->INTEN &= ~UART_INTEN_TXPDMAEN_Msk;
UART1->INTEN |= UART_INTEN_RXPDMAEN_Msk;
/* Wait for PDMA operation finish */
while(IsTestOver == FALSE);
/* Check PDMA status */
if(IsTestOver == 2)
printf("target abort...\n");
/* Disable UART Tx and Rx PDMA function */
UART1->INTEN &= ~(UART_INTEN_TXPDMAEN_Msk | UART_INTEN_RXPDMAEN_Msk);
/* Disable PDMA channel */
PDMA->CHCTL = 0;
/* Disable PDMA Interrupt */
PDMA->INTEN = 0;
NVIC_DisableIRQ(PDMA_IRQn);
/* Disable UART0 RDA interrupt */
UART0->INTEN &= ~UART_INTEN_RDAIEN_Msk;
NVIC_DisableIRQ(UART02_IRQn);
}
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Unlock protected registers */
SYS_UnlockReg();
/* Enable HIRC clock (Internal RC 48MHz) */
CLK->PWRCTL |= CLK_PWRCTL_HIRCEN_Msk;
/* Wait for HIRC clock ready */
while(!(CLK->STATUS & CLK_STATUS_HIRCSTB_Msk));
/* Select HCLK clock source as HIRC and HCLK clock divider as 1 */
CLK->CLKSEL0 = (CLK->CLKSEL0 & (~CLK_CLKSEL0_HCLKSEL_Msk)) | CLK_CLKSEL0_HCLKSEL_HIRC;
CLK->CLKDIV0 = (CLK->CLKDIV0 & (~CLK_CLKDIV0_HCLKDIV_Msk)) | CLK_CLKDIV0_HCLK(1);
/* Set PLL to Power-down mode */
CLK->PLLCTL |= CLK_PLLCTL_PD_Msk;
/* Enable UART module clock */
CLK->APBCLK0 |= (CLK_APBCLK0_UART0CKEN_Msk | CLK_APBCLK0_UART1CKEN_Msk);
/* Enable PDMA peripheral clock */
CLK->AHBCLK |= CLK_AHBCLK_PDMACKEN_Msk;
/* Select UART module clock source as HIRC and UART module clock divider as 1 */
CLK->CLKSEL1 = (CLK->CLKSEL1 & (~CLK_CLKSEL1_UART0SEL_Msk)) | CLK_CLKSEL1_UART0SEL_HIRC;
CLK->CLKDIV0 = (CLK->CLKDIV0 & (~CLK_CLKDIV0_UART0DIV_Msk)) | CLK_CLKDIV0_UART0(1);
CLK->CLKSEL1 = (CLK->CLKSEL1 & (~CLK_CLKSEL1_UART1SEL_Msk)) | CLK_CLKSEL1_UART1SEL_HIRC;
CLK->CLKDIV0 = (CLK->CLKDIV0 & (~CLK_CLKDIV0_UART1DIV_Msk)) | CLK_CLKDIV0_UART1(1);
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PB multi-function pins for UART0 RXD=PB.12 and TXD=PB.13 */
SYS->GPB_MFPH = (SYS->GPB_MFPH & ~(SYS_GPB_MFPH_PB12MFP_Msk | SYS_GPB_MFPH_PB13MFP_Msk)) | \
(SYS_GPB_MFPH_PB12MFP_UART0_RXD | SYS_GPB_MFPH_PB13MFP_UART0_TXD);
/* Set PB multi-function pins for UART1 RXD(PB.2) and TXD(PB.3) */
SYS->GPB_MFPL = (SYS->GPB_MFPL & ~(SYS_GPB_MFPL_PB2MFP_Msk | SYS_GPB_MFPL_PB3MFP_Msk)) | \
(SYS_GPB_MFPL_PB2MFP_UART1_RXD | SYS_GPB_MFPL_PB3MFP_UART1_TXD);
/* Lock protected registers */
SYS_LockReg();
}
void UART0_Init()
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init UART */
/*---------------------------------------------------------------------------------------------------------*/
/* Reset UART0 */
SYS->IPRST1 |= SYS_IPRST1_UART0RST_Msk;
SYS->IPRST1 &= ~SYS_IPRST1_UART0RST_Msk;
/* Configure UART0 and set UART0 baud rate */
UART0->BAUD = UART_BAUD_MODE2 | UART_BAUD_MODE2_DIVIDER(__HIRC, 115200);
UART0->LINE = UART_WORD_LEN_8 | UART_PARITY_NONE | UART_STOP_BIT_1;
}
void UART1_Init()
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init UART */
/*---------------------------------------------------------------------------------------------------------*/
/* Reset UART1 */
SYS->IPRST1 |= SYS_IPRST1_UART1RST_Msk;
SYS->IPRST1 &= ~SYS_IPRST1_UART1RST_Msk;
/* Configure UART1 and set UART1 baud rate */
UART1->BAUD = UART_BAUD_MODE2 | UART_BAUD_MODE2_DIVIDER(__HIRC, 115200);
UART1->LINE = UART_WORD_LEN_8 | UART_PARITY_NONE | UART_STOP_BIT_1;
}
/*---------------------------------------------------------------------------------------------------------*/
/* Main Function */
/*---------------------------------------------------------------------------------------------------------*/
int32_t main(void)
{
uint8_t unItem;
/* Init System, peripheral clock and multi-function I/O */
SYS_Init();
/* Init UART0 for printf */
UART0_Init();
/* Init UART1 for test */
UART1_Init();
/*---------------------------------------------------------------------------------------------------------*/
/* SAMPLE CODE */
/*---------------------------------------------------------------------------------------------------------*/
printf("\n\nCPU [url=home.php?mod=space&uid=72445]@[/url] %d Hz\n", SystemCoreClock);
printf("\nUART PDMA Sample Program");
/* UART PDMA sample function */
do
{
printf("\n\n");
printf("+------------------------------------------------------------------------+\n");
printf("| UART PDMA Driver Sample Code |\n");
printf("+------------------------------------------------------------------------+\n");
printf("| [1] Using TWO PDMA channel to test. < TX1(CH1)-->RX1(CH0) > |\n");
printf("| [2] Using ONE PDMA channel to test. < TX1-->RX1(CH0) > |\n");
printf("+------------------------------------------------------------------------+\n");
unItem = getchar();
IsTestOver = FALSE;
if((unItem == '1') || (unItem == '2'))
{
PDMA_UART(unItem);
printf("\n\n UART PDMA sample code is complete.\n");
}
}
while(unItem != 27);
while(1);
}
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