diff options
Diffstat (limited to 'firmware/lpc17xx/lpc17xx_pinsel.c')
| -rw-r--r-- | firmware/lpc17xx/lpc17xx_pinsel.c | 308 |
1 files changed, 308 insertions, 0 deletions
diff --git a/firmware/lpc17xx/lpc17xx_pinsel.c b/firmware/lpc17xx/lpc17xx_pinsel.c new file mode 100644 index 0000000..c459217 --- /dev/null +++ b/firmware/lpc17xx/lpc17xx_pinsel.c @@ -0,0 +1,308 @@ +/**
+ * @file : lpc17xx_pinsel.c
+ * @brief : Contains all functions support for Pin connect block firmware
+ * library on LPC17xx
+ * @version : 1.0
+ * @date : 25. Feb. 2009
+ * @author : HoanTran
+ **************************************************************************
+ * 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 ----------------------------------------------------------- */
+/** @addtogroup PINSEL_Public_Functions
+ * @{
+ */
+
+/*********************************************************************//**
+ * @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
+ **********************************************************************/
+void PINSEL_SetPinFunc ( uint8_t portnum, uint8_t pinnum, uint8_t funcnum)
+{
+ uint32_t pinnum_t = pinnum;
+ uint32_t pinselreg_idx = 2 * portnum;
+ uint32_t *pPinCon = (uint32_t *)&LPC_PINCON->PINSEL0;
+
+ if (pinnum_t >= 16) {
+ pinnum_t -= 16;
+ pinselreg_idx++;
+ }
+ *(uint32_t *)(pPinCon + pinselreg_idx) &= ~(0x03UL << (pinnum_t * 2));
+ *(uint32_t *)(pPinCon + pinselreg_idx) |= ((uint32_t)funcnum) << (pinnum_t * 2);
+}
+
+
+
+/*********************************************************************//**
+ * @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 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 PINSEL_SetResistorMode ( uint8_t portnum, uint8_t pinnum, uint8_t modenum)
+{
+ uint32_t pinnum_t = pinnum;
+ uint32_t pinmodereg_idx = 2 * portnum;
+ uint32_t *pPinCon = (uint32_t *)&LPC_PINCON->PINMODE0;
+
+ if (pinnum_t >= 16) {
+ pinnum_t -= 16;
+ pinmodereg_idx++ ;
+ }
+
+ *(uint32_t *)(pPinCon + pinmodereg_idx) &= ~(0x03UL << (pinnum_t * 2));
+ *(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 PINSEL_SetOpenDrainMode( uint8_t portnum, uint8_t pinnum, uint8_t modenum)
+{
+ uint32_t *pPinCon = (uint32_t *)&LPC_PINCON->PINMODE_OD0;
+
+ if (modenum == PINSEL_PINMODE_OPENDRAIN){
+ *(uint32_t *)(pPinCon + portnum) |= (0x01UL << pinnum);
+ } else {
+ *(uint32_t *)(pPinCon + portnum) &= ~(0x01UL << pinnum);
+ }
+}
+
+
+
+/*********************************************************************//**
+ * @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)
+{
+ PINSEL_SetPinFunc(PinCfg->Portnum, PinCfg->Pinnum, PinCfg->Funcnum);
+ PINSEL_SetResistorMode(PinCfg->Portnum, PinCfg->Pinnum, PinCfg->Pinmode);
+ PINSEL_SetOpenDrainMode(PinCfg->Portnum, PinCfg->Pinnum, PinCfg->OpenDrain);
+}
+
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/* --------------------------------- End Of File ------------------------------ */
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