Diff: libs/LPC17xx/LPC17xxLib/src/lpc17xx_pinsel.c

Revision:

2:1df0b61d3b5a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libs/LPC17xx/LPC17xxLib/src/lpc17xx_pinsel.c	Fri Feb 28 18:52:52 2014 -0800
@@ -0,0 +1,315 @@
+#ifdef __LPC17XX__
+
+/**********************************************************************
+* $Id$		lpc17xx_pinsel.c				2010-05-21
+*//**
+* @file		lpc17xx_pinsel.c
+* @brief	Contains all functions support for Pin connect block firmware
+* 			library on LPC17xx
+* @version	2.0
+* @date		21. May. 2010
+* @author	NXP MCU SW Application Team
+*
+* Copyright(C) 2010, NXP Semiconductor
+* All rights reserved.
+*
+***********************************************************************
+* 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.
+**********************************************************************/
+
+/* Peripheral group ----------------------------------------------------------- */
+/** @addtogroup PINSEL
+ * @{
+ */
+
+/* Includes ------------------------------------------------------------------- */
+#include "lpc17xx_pinsel.h"
+
+/* Public Functions ----------------------------------------------------------- */
+
+static void set_PinFunc ( uint8_t portnum, uint8_t pinnum, uint8_t funcnum);
+static void set_ResistorMode ( uint8_t portnum, uint8_t pinnum, uint8_t modenum);
+static void set_OpenDrainMode( uint8_t portnum, uint8_t pinnum, uint8_t modenum);
+
+/*********************************************************************//**
+ * @brief 		Setup the pin selection function
+ * @param[in]	portnum PORT number,
+ * 				should be one of the following:
+ * 				- PINSEL_PORT_0	: Port 0
+ * 				- PINSEL_PORT_1	: Port 1
+ * 				- PINSEL_PORT_2	: Port 2
+ * 				- PINSEL_PORT_3	: Port 3
+ *
+ * @param[in]	pinnum	Pin number,
+ * 				should be one of the following:
+				- PINSEL_PIN_0 : Pin 0
+				- PINSEL_PIN_1 : Pin 1
+				- PINSEL_PIN_2 : Pin 2
+				- PINSEL_PIN_3 : Pin 3
+				- PINSEL_PIN_4 : Pin 4
+				- PINSEL_PIN_5 : Pin 5
+				- PINSEL_PIN_6 : Pin 6
+				- PINSEL_PIN_7 : Pin 7
+				- PINSEL_PIN_8 : Pin 8
+				- PINSEL_PIN_9 : Pin 9
+				- PINSEL_PIN_10 : Pin 10
+				- PINSEL_PIN_11 : Pin 11
+				- PINSEL_PIN_12 : Pin 12
+				- PINSEL_PIN_13 : Pin 13
+				- PINSEL_PIN_14 : Pin 14
+				- PINSEL_PIN_15 : Pin 15
+				- PINSEL_PIN_16 : Pin 16
+				- PINSEL_PIN_17 : Pin 17
+				- PINSEL_PIN_18 : Pin 18
+				- PINSEL_PIN_19 : Pin 19
+				- PINSEL_PIN_20 : Pin 20
+				- PINSEL_PIN_21 : Pin 21
+				- PINSEL_PIN_22 : Pin 22
+				- PINSEL_PIN_23 : Pin 23
+				- PINSEL_PIN_24 : Pin 24
+				- PINSEL_PIN_25 : Pin 25
+				- PINSEL_PIN_26 : Pin 26
+				- PINSEL_PIN_27 : Pin 27
+				- PINSEL_PIN_28 : Pin 28
+				- PINSEL_PIN_29 : Pin 29
+				- PINSEL_PIN_30 : Pin 30
+				- PINSEL_PIN_31 : Pin 31
+
+ * @param[in] 	funcnum Function number,
+ * 				should be one of the following:
+ *				- PINSEL_FUNC_0 : default function
+ *				- PINSEL_FUNC_1 : first alternate function
+ *				- PINSEL_FUNC_2 : second alternate function
+ *				- PINSEL_FUNC_3 : third alternate function
+ *
+ * @return 		None
+ **********************************************************************/
+static void set_PinFunc ( uint8_t portnum, uint8_t pinnum, uint8_t funcnum)
+{
+	uint32_t pinnum_t = pinnum;
+	uint32_t pinselreg_idx = 2 * portnum;
+	volatile uint32_t *pPinCon = (volatile uint32_t *)&LPC_PINCON->PINSEL0;
+
+	if (pinnum_t >= 16) {
+		pinnum_t -= 16;
+		pinselreg_idx++;
+	}
+	*(volatile uint32_t *)(pPinCon + pinselreg_idx) &= ~(0x03UL << (pinnum_t * 2));
+	*(volatile uint32_t *)(pPinCon + pinselreg_idx) |= ((uint32_t)funcnum) << (pinnum_t * 2);
+}
+
+/*********************************************************************//**
+ * @brief 		Setup resistor mode for each pin
+ * @param[in]	portnum PORT number,
+ * 				should be one of the following:
+ * 				- PINSEL_PORT_0	: Port 0
+ * 				- PINSEL_PORT_1	: Port 1
+ * 				- PINSEL_PORT_2	: Port 2
+ * 				- PINSEL_PORT_3	: Port 3
+ * @param[in]	pinnum	Pin number,
+ * 				should be one of the following:
+				- PINSEL_PIN_0 : Pin 0
+				- PINSEL_PIN_1 : Pin 1
+				- PINSEL_PIN_2 : Pin 2
+				- PINSEL_PIN_3 : Pin 3
+				- PINSEL_PIN_4 : Pin 4
+				- PINSEL_PIN_5 : Pin 5
+				- PINSEL_PIN_6 : Pin 6
+				- PINSEL_PIN_7 : Pin 7
+				- PINSEL_PIN_8 : Pin 8
+				- PINSEL_PIN_9 : Pin 9
+				- PINSEL_PIN_10 : Pin 10
+				- PINSEL_PIN_11 : Pin 11
+				- PINSEL_PIN_12 : Pin 12
+				- PINSEL_PIN_13 : Pin 13
+				- PINSEL_PIN_14 : Pin 14
+				- PINSEL_PIN_15 : Pin 15
+				- PINSEL_PIN_16 : Pin 16
+				- PINSEL_PIN_17 : Pin 17
+				- PINSEL_PIN_18 : Pin 18
+				- PINSEL_PIN_19 : Pin 19
+				- PINSEL_PIN_20 : Pin 20
+				- PINSEL_PIN_21 : Pin 21
+				- PINSEL_PIN_22 : Pin 22
+				- PINSEL_PIN_23 : Pin 23
+				- PINSEL_PIN_24 : Pin 24
+				- PINSEL_PIN_25 : Pin 25
+				- PINSEL_PIN_26 : Pin 26
+				- PINSEL_PIN_27 : Pin 27
+				- PINSEL_PIN_28 : Pin 28
+				- PINSEL_PIN_29 : Pin 29
+				- PINSEL_PIN_30 : Pin 30
+				- PINSEL_PIN_31 : Pin 31
+
+ * @param[in] 	modenum: Mode number,
+ * 				should be one of the following:
+				- PINSEL_PINMODE_PULLUP	: Internal pull-up resistor
+				- PINSEL_PINMODE_TRISTATE : Tri-state
+				- PINSEL_PINMODE_PULLDOWN : Internal pull-down resistor
+
+ * @return 		None
+ **********************************************************************/
+void set_ResistorMode ( uint8_t portnum, uint8_t pinnum, uint8_t modenum)
+{
+	uint32_t pinnum_t = pinnum;
+	uint32_t pinmodereg_idx = 2 * portnum;
+	volatile uint32_t *pPinCon = (volatile uint32_t *)&LPC_PINCON->PINMODE0;
+
+	if (pinnum_t >= 16) {
+		pinnum_t -= 16;
+		pinmodereg_idx++ ;
+	}
+
+	*(volatile uint32_t *)(pPinCon + pinmodereg_idx) &= ~(0x03UL << (pinnum_t * 2));
+	*(volatile uint32_t *)(pPinCon + pinmodereg_idx) |= ((uint32_t)modenum) << (pinnum_t * 2);
+}
+
+/*********************************************************************//**
+ * @brief 		Setup Open drain mode for each pin
+ * @param[in]	portnum PORT number,
+ * 				should be one of the following:
+ * 				- PINSEL_PORT_0	: Port 0
+ * 				- PINSEL_PORT_1	: Port 1
+ * 				- PINSEL_PORT_2	: Port 2
+ * 				- PINSEL_PORT_3	: Port 3
+ *
+ * @param[in]	pinnum	Pin number,
+ * 				should be one of the following:
+				- PINSEL_PIN_0 : Pin 0
+				- PINSEL_PIN_1 : Pin 1
+				- PINSEL_PIN_2 : Pin 2
+				- PINSEL_PIN_3 : Pin 3
+				- PINSEL_PIN_4 : Pin 4
+				- PINSEL_PIN_5 : Pin 5
+				- PINSEL_PIN_6 : Pin 6
+				- PINSEL_PIN_7 : Pin 7
+				- PINSEL_PIN_8 : Pin 8
+				- PINSEL_PIN_9 : Pin 9
+				- PINSEL_PIN_10 : Pin 10
+				- PINSEL_PIN_11 : Pin 11
+				- PINSEL_PIN_12 : Pin 12
+				- PINSEL_PIN_13 : Pin 13
+				- PINSEL_PIN_14 : Pin 14
+				- PINSEL_PIN_15 : Pin 15
+				- PINSEL_PIN_16 : Pin 16
+				- PINSEL_PIN_17 : Pin 17
+				- PINSEL_PIN_18 : Pin 18
+				- PINSEL_PIN_19 : Pin 19
+				- PINSEL_PIN_20 : Pin 20
+				- PINSEL_PIN_21 : Pin 21
+				- PINSEL_PIN_22 : Pin 22
+				- PINSEL_PIN_23 : Pin 23
+				- PINSEL_PIN_24 : Pin 24
+				- PINSEL_PIN_25 : Pin 25
+				- PINSEL_PIN_26 : Pin 26
+				- PINSEL_PIN_27 : Pin 27
+				- PINSEL_PIN_28 : Pin 28
+				- PINSEL_PIN_29 : Pin 29
+				- PINSEL_PIN_30 : Pin 30
+				- PINSEL_PIN_31 : Pin 31
+
+ * @param[in]	modenum  Open drain mode number,
+ * 				should be one of the following:
+ * 				- PINSEL_PINMODE_NORMAL : Pin is in the normal (not open drain) mode
+ * 				- PINSEL_PINMODE_OPENDRAIN : Pin is in the open drain mode
+ *
+ * @return 		None
+ **********************************************************************/
+void set_OpenDrainMode( uint8_t portnum, uint8_t pinnum, uint8_t modenum)
+{
+	volatile uint32_t *pPinCon = (volatile uint32_t *)&LPC_PINCON->PINMODE_OD0;
+
+	if (modenum == PINSEL_PINMODE_OPENDRAIN){
+		*(volatile uint32_t *)(pPinCon + portnum) |= (0x01UL << pinnum);
+	} else {
+		*(volatile uint32_t *)(pPinCon + portnum) &= ~(0x01UL << pinnum);
+	}
+}
+
+/* End of Public Functions ---------------------------------------------------- */
+
+/* Public Functions ----------------------------------------------------------- */
+/** @addtogroup PINSEL_Public_Functions
+ * @{
+ */
+/*********************************************************************//**
+ * @brief 		Configure trace function
+ * @param[in] 	NewState State of the Trace function configuration,
+ * 				should be one of the following:
+ * 				- ENABLE : Enable Trace Function
+ * 				- DISABLE : Disable Trace Function
+ *
+ * @return 		None
+ **********************************************************************/
+void PINSEL_ConfigTraceFunc(FunctionalState NewState)
+{
+	if (NewState == ENABLE) {
+		LPC_PINCON->PINSEL10 |= (0x01UL << 3);
+	} else if (NewState == DISABLE) {
+		LPC_PINCON->PINSEL10 &= ~(0x01UL << 3);
+	}
+}
+
+/*********************************************************************//**
+ * @brief 		Setup I2C0 pins
+ * @param[in]	i2cPinMode I2C pin mode,
+ * 				should be one of the following:
+ * 				- PINSEL_I2C_Normal_Mode : The standard drive mode
+ * 				- PINSEL_I2C_Fast_Mode : Fast Mode Plus drive mode
+ *
+ * @param[in]	filterSlewRateEnable  should be:
+ * 				- ENABLE: Enable filter and slew rate.
+ * 				- DISABLE: Disable filter and slew rate.
+ *
+ * @return 		None
+ **********************************************************************/
+void PINSEL_SetI2C0Pins(uint8_t i2cPinMode, FunctionalState filterSlewRateEnable)
+{
+	uint32_t regVal;
+
+	if (i2cPinMode == PINSEL_I2C_Fast_Mode){
+		regVal = PINSEL_I2CPADCFG_SCLDRV0 | PINSEL_I2CPADCFG_SDADRV0;
+	}
+
+	if (filterSlewRateEnable == DISABLE){
+		regVal = PINSEL_I2CPADCFG_SCLI2C0 | PINSEL_I2CPADCFG_SDAI2C0;
+	}
+	LPC_PINCON->I2CPADCFG = regVal;
+}
+
+
+/*********************************************************************//**
+ * @brief 		Configure Pin corresponding to specified parameters passed
+ * 				in the PinCfg
+ * @param[in]	PinCfg	Pointer to a PINSEL_CFG_Type structure
+ *                    that contains the configuration information for the
+ *                    specified pin.
+ * @return 		None
+ **********************************************************************/
+void PINSEL_ConfigPin(PINSEL_CFG_Type *PinCfg)
+{
+	set_PinFunc(PinCfg->Portnum, PinCfg->Pinnum, PinCfg->Funcnum);
+	set_ResistorMode(PinCfg->Portnum, PinCfg->Pinnum, PinCfg->Pinmode);
+	set_OpenDrainMode(PinCfg->Portnum, PinCfg->Pinnum, PinCfg->OpenDrain);
+}
+
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/* --------------------------------- End Of File ------------------------------ */
+#endif /* __LPC17XX__ */