Diff: MCPWM/MCPWMSimple/mcpwm_simple.c

Revision:

0:bf7b9fba3924

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MCPWM/MCPWMSimple/mcpwm_simple.c	Sun Mar 20 05:38:56 2011 +0000
@@ -0,0 +1,284 @@
+/***********************************************************************//**
+ * @file		mcpwm_simple.c
+ * @purpose		This example used to test MCPWM driver
+ * @version		2.0
+ * @date		21. May. 2010
+ * @author		NXP MCU SW Application Team
+ *---------------------------------------------------------------------
+ * Software that is described herein is for illustrative purposes only
+ * which provides customers with programming information regarding the
+ * products. This software is supplied "AS IS" without any warranties.
+ * NXP Semiconductors assumes no responsibility or liability for the
+ * use of the software, conveys no license or title under any patent,
+ * copyright, or mask work right to the product. NXP Semiconductors
+ * reserves the right to make changes in the software without
+ * notification. NXP Semiconductors also make no representation or
+ * warranty that such application will be suitable for the specified
+ * use without further testing or modification.
+ **********************************************************************/
+#include "lpc17xx_mcpwm.h"
+#include "lpc17xx_pinsel.h"
+#include "lpc17xx_libcfg.h"
+#include "lpc17xx_clkpwr.h"
+#include "debug_frmwrk.h"
+
+
+/* Example group ----------------------------------------------------------- */
+/** @defgroup MCPWM_MCPWMSimple	MCPWMSimple
+ * @ingroup MCPWM_Examples
+ * @{
+ */
+
+/************************** PRIVATE DEFINITIONS **********************/
+/** MCPWM in 3-phase DC motor mode test */
+#define DC_MODE_TEST			1
+/** MCPWM in 3-phase AC motor mode test */
+#define AC_MODE_TEST			0
+/** MCPWM tested with Capture function */
+#define CAPTURE_MODE_TEST 		0
+
+
+/************************** PRIVATE VARIABLES *************************/
+#if CAPTURE_MODE_TEST
+/** Capture configuration data */
+MCPWM_CAPTURE_CFG_Type captureCfg;
+/** capture flag */
+__IO FlagStatus CapFlag;
+/** Latest capture value */
+__IO uint32_t CapVal;
+#endif
+/************************** PRIVATE FUNCTIONS *************************/
+void MCPWM_IRQHandler(void);
+
+/*----------------- INTERRUPT SERVICE ROUTINES --------------------------*/
+/*********************************************************************//**
+ * @brief		MCPWM interrupt handler sub-routine
+ * @param[in]	None
+ * @return 		None
+ **********************************************************************/
+void MCPWM_IRQHandler(void)
+{
+#if CAPTURE_MODE_TEST
+	// Check whether if capture event interrupt is set
+	if (MCPWM_GetIntStatus(LPC_MCPWM, MCPWM_INTFLAG_CAP0)) {
+		if (CapFlag == RESET) {
+			// Store capture value
+			CapVal = MCPWM_GetCapture(LPC_MCPWM, 0);
+			// toggle capture flag
+			CapFlag = SET;
+			// Disable interrupt for capture event
+			MCPWM_IntConfig(LPC_MCPWM, MCPWM_INTFLAG_CAP0, DISABLE);
+		}
+		// Clear pending interrupt
+		MCPWM_IntClear(LPC_MCPWM, MCPWM_INTFLAG_CAP0);
+	}
+#endif
+}
+
+
+/*-------------------------MAIN FUNCTION------------------------------*/
+/*********************************************************************//**
+ * @brief		c_entry: Main MCPWM program body
+ * @param[in]	None
+ * @return 		int
+ **********************************************************************/
+int c_entry(void)
+{
+	// MCPWM Channel configuration data
+	MCPWM_CHANNEL_CFG_Type channelsetup[3];
+	uint32_t i;
+	PINSEL_CFG_Type PinCfg;
+
+	/* Initialize debug via UART0
+	 * – 115200bps
+	 * – 8 data bit
+	 * – No parity
+	 * – 1 stop bit
+	 * – No flow control
+	 */
+	debug_frmwrk_init();
+	_DBG_("Hello MCPWM ...");
+
+	/* Pin configuration for MCPWM function:
+	 * Assign: 	- P1.19 as MCOA0 - Motor Control Channel 0 Output A
+	 * 			- P1.22 as MCOB0 - Motor Control Channel 0 Output B
+	 * 			- P1.25 as MCOA1 - Motor Control Channel 1 Output A
+	 * 			- P1.26 as MCOB1 - Motor Control Channel 1 Output B
+	 * 			- P1.28 as MCOA2 - Motor Control Channel 2 Output A
+	 * 			- P1.29 as MCOB2 - Motor Control Channel 2 Output B
+	 * 			- P1.20 as MCI0	 - Motor Control Feed Back Channel 0
+	 * Warning: According to Errata.lpc1768-18.March.2010: Input pin (MIC0-2)
+	 * on the Motor Control PWM peripheral are not functional
+	 */
+	PinCfg.Funcnum = 1;
+	PinCfg.OpenDrain = 0;
+	PinCfg.Pinmode = 0;
+	PinCfg.Portnum = 1;
+	PinCfg.Pinnum = 19;
+	PINSEL_ConfigPin(&PinCfg);
+	PinCfg.Pinnum = 22;
+	PINSEL_ConfigPin(&PinCfg);
+	PinCfg.Pinnum = 25;
+	PINSEL_ConfigPin(&PinCfg);
+	PinCfg.Pinnum = 26;
+	PINSEL_ConfigPin(&PinCfg);
+	PinCfg.Pinnum = 28;
+	PINSEL_ConfigPin(&PinCfg);
+	PinCfg.Pinnum = 29;
+	PINSEL_ConfigPin(&PinCfg);
+	PinCfg.Pinnum = 20;
+	PINSEL_ConfigPin(&PinCfg);
+
+	/* Disable interrupt for MCPWM  */
+	NVIC_DisableIRQ(MCPWM_IRQn);
+	/* preemption = 1, sub-priority = 1 */
+	NVIC_SetPriority(MCPWM_IRQn, ((0x01<<3)|0x01));
+
+	/* Init MCPWM peripheral */
+	MCPWM_Init(LPC_MCPWM);
+
+	channelsetup[0].channelType = MCPWM_CHANNEL_EDGE_MODE;
+	channelsetup[0].channelPolarity = MCPWM_CHANNEL_PASSIVE_LO;
+	channelsetup[0].channelDeadtimeEnable = DISABLE;
+	channelsetup[0].channelDeadtimeValue = 0;
+	channelsetup[0].channelUpdateEnable = ENABLE;
+	channelsetup[0].channelTimercounterValue = 0;
+	channelsetup[0].channelPeriodValue = 300;
+	channelsetup[0].channelPulsewidthValue = 0;
+
+	channelsetup[1].channelType = MCPWM_CHANNEL_EDGE_MODE;
+	channelsetup[1].channelPolarity = MCPWM_CHANNEL_PASSIVE_LO;
+	channelsetup[1].channelDeadtimeEnable = DISABLE;
+	channelsetup[1].channelDeadtimeValue = 0;
+	channelsetup[1].channelUpdateEnable = ENABLE;
+	channelsetup[1].channelTimercounterValue = 0;
+	channelsetup[1].channelPeriodValue = 300;
+	channelsetup[1].channelPulsewidthValue = 100;
+
+	channelsetup[2].channelType = MCPWM_CHANNEL_EDGE_MODE;
+	channelsetup[2].channelPolarity = MCPWM_CHANNEL_PASSIVE_LO;
+	channelsetup[2].channelDeadtimeEnable = DISABLE;
+	channelsetup[2].channelDeadtimeValue = 0;
+	channelsetup[2].channelUpdateEnable = ENABLE;
+	channelsetup[2].channelTimercounterValue = 0;
+	channelsetup[2].channelPeriodValue = 300;
+	channelsetup[2].channelPulsewidthValue = 200;
+
+	MCPWM_ConfigChannel(LPC_MCPWM, 0, &channelsetup[0]);
+	MCPWM_ConfigChannel(LPC_MCPWM, 1, &channelsetup[1]);
+	MCPWM_ConfigChannel(LPC_MCPWM, 2, &channelsetup[2]);
+
+#if DC_MODE_TEST
+	/*
+	 * - DC mode enabled.
+	 * - Invert Output enabled
+	 * - A0 and A1 output pin is internally routed to A0 signal
+	 */
+	MCPWM_DCMode(LPC_MCPWM, ENABLE, ENABLE, (MCPWM_PATENT_A0|MCPWM_PATENT_A1));
+#endif
+
+#if AC_MODE_TEST
+	/*
+	 * - AC mode is enabled.
+	 */
+	MCPWM_ACMode(LPC_MCPWM, ENABLE);
+#endif
+
+#if CAPTURE_MODE_TEST
+	/*
+	 * Capture mode in this case is used to detect the falling edge on MCO0B output pin.
+	 * The MCFB0 input pin therefore must be connected to MCO0B. (P1.20 - P1.22)
+	 * - Capture Channel 0.
+	 * - Capture falling edge on MCFB0 input pin.
+	 * - Interrupt enabled on capture event.
+	 */
+	captureCfg.captureChannel = 0;
+	captureCfg.captureFalling = ENABLE;
+	captureCfg.captureRising = DISABLE;
+	captureCfg.hnfEnable = DISABLE;
+	captureCfg.timerReset = DISABLE;
+	MCPWM_ConfigCapture(LPC_MCPWM, 0, &captureCfg);
+
+	// Reset flag for the first time
+	CapFlag = RESET;
+
+	// Enable interrupt for capture event on MCI0 (MCFB0)
+	MCPWM_IntConfig(LPC_MCPWM, MCPWM_INTFLAG_CAP0, ENABLE);
+
+	/* Enable interrupt for MCPWM  */
+	NVIC_EnableIRQ(MCPWM_IRQn);
+#endif
+
+	MCPWM_Start(LPC_MCPWM, ENABLE, ENABLE, ENABLE);
+
+	// Main loop
+	while (1) {
+//		Timer_Wait(LPC_TIM0, 1000);
+		//delay
+		for(i=0;i<100000;i++);
+
+		channelsetup[0].channelPulsewidthValue = (channelsetup[0].channelPulsewidthValue >= 300) ?
+												0 : channelsetup[0].channelPulsewidthValue + 20;
+		channelsetup[1].channelPulsewidthValue = (channelsetup[1].channelPulsewidthValue >= 300) ?
+												0 : channelsetup[1].channelPulsewidthValue + 20;
+		channelsetup[2].channelPulsewidthValue = (channelsetup[2].channelPulsewidthValue >= 300) ?
+												0 : channelsetup[2].channelPulsewidthValue + 20;
+		_DBG_("Update!");
+		MCPWM_WriteToShadow(LPC_MCPWM, 0, &channelsetup[0]);
+		MCPWM_WriteToShadow(LPC_MCPWM, 1, &channelsetup[1]);
+		MCPWM_WriteToShadow(LPC_MCPWM, 2, &channelsetup[2]);
+#if CAPTURE_MODE_TEST
+		// Check capture flag is set or not
+		if (CapFlag) {
+			// Print out the value
+			_DBG("Capture Value: ");
+			_DBD32(CapVal); _DBG_("");
+
+			// Setup a new capture event
+			MCPWM_ConfigCapture(LPC_MCPWM, 0, &captureCfg);
+
+			// Re-Enable interrupt for capture event on MCI0 (MCFB0)
+			MCPWM_IntConfig(LPC_MCPWM, MCPWM_INTFLAG_CAP0, ENABLE);
+
+			// Reset flag
+			CapFlag = RESET;
+		}
+#endif
+	}
+
+    /* Loop forever */
+    return 1;
+}
+
+/* With ARM and GHS toolsets, the entry point is main() - this will
+   allow the linker to generate wrapper code to setup stacks, allocate
+   heap area, and initialize and copy code and data segments. For GNU
+   toolsets, the entry point is through __start() in the crt0_gnu.asm
+   file, and that startup code will setup stacks and data */
+int main(void)
+{
+    return c_entry();
+}
+
+
+#ifdef  DEBUG
+/*******************************************************************************
+* @brief		Reports the name of the source file and the source line number
+* 				where the CHECK_PARAM error has occurred.
+* @param[in]	file Pointer to the source file name
+* @param[in]    line assert_param error line source number
+* @return		None
+*******************************************************************************/
+void check_failed(uint8_t *file, uint32_t line)
+{
+	/* User can add his own implementation to report the file name and line number,
+	 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
+
+	/* Infinite loop */
+	while(1);
+}
+#endif
+
+/*
+ * @}
+ */