Sergey Solodunov / mbed-dev

mbed library sources. Supersedes mbed-src.

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targets/hal/TARGET_Atmel/TARGET_SAM_CortexM0P/drivers/system/pinmux/pinmux.c@144:423e1876dc07, 2016-08-02 (annotated)

Committer:
screamer
Date:
Tue Aug 02 14:07:36 2016 +0000
Revision:
144:423e1876dc07
Parent:
15:a81a8d6c1dfe 
Added targets.json file for the supported targets in the release

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 15:a81a8d6c1dfe 1 /**
mbed_official 15:a81a8d6c1dfe 2 * \file
mbed_official 15:a81a8d6c1dfe 3 *
mbed_official 15:a81a8d6c1dfe 4 * \brief SAM Pin Multiplexer Driver
mbed_official 15:a81a8d6c1dfe 5 *
mbed_official 15:a81a8d6c1dfe 6 * Copyright (C) 2012-2015 Atmel Corporation. All rights reserved.
mbed_official 15:a81a8d6c1dfe 7 *
mbed_official 15:a81a8d6c1dfe 8 * \asf_license_start
mbed_official 15:a81a8d6c1dfe 9 *
mbed_official 15:a81a8d6c1dfe 10 * \page License
mbed_official 15:a81a8d6c1dfe 11 *
mbed_official 15:a81a8d6c1dfe 12 * Redistribution and use in source and binary forms, with or without
mbed_official 15:a81a8d6c1dfe 13 * modification, are permitted provided that the following conditions are met:
mbed_official 15:a81a8d6c1dfe 14 *
mbed_official 15:a81a8d6c1dfe 15 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 15:a81a8d6c1dfe 16 * this list of conditions and the following disclaimer.
mbed_official 15:a81a8d6c1dfe 17 *
mbed_official 15:a81a8d6c1dfe 18 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 15:a81a8d6c1dfe 19 * this list of conditions and the following disclaimer in the documentation
mbed_official 15:a81a8d6c1dfe 20 * and/or other materials provided with the distribution.
mbed_official 15:a81a8d6c1dfe 21 *
mbed_official 15:a81a8d6c1dfe 22 * 3. The name of Atmel may not be used to endorse or promote products derived
mbed_official 15:a81a8d6c1dfe 23 * from this software without specific prior written permission.
mbed_official 15:a81a8d6c1dfe 24 *
mbed_official 15:a81a8d6c1dfe 25 * 4. This software may only be redistributed and used in connection with an
mbed_official 15:a81a8d6c1dfe 26 * Atmel microcontroller product.
mbed_official 15:a81a8d6c1dfe 27 *
mbed_official 15:a81a8d6c1dfe 28 * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
mbed_official 15:a81a8d6c1dfe 29 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
mbed_official 15:a81a8d6c1dfe 30 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
mbed_official 15:a81a8d6c1dfe 31 * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
mbed_official 15:a81a8d6c1dfe 32 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 15:a81a8d6c1dfe 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
mbed_official 15:a81a8d6c1dfe 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
mbed_official 15:a81a8d6c1dfe 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
mbed_official 15:a81a8d6c1dfe 36 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
mbed_official 15:a81a8d6c1dfe 37 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
mbed_official 15:a81a8d6c1dfe 38 * POSSIBILITY OF SUCH DAMAGE.
mbed_official 15:a81a8d6c1dfe 39 *
mbed_official 15:a81a8d6c1dfe 40 * \asf_license_stop
mbed_official 15:a81a8d6c1dfe 41 *
mbed_official 15:a81a8d6c1dfe 42 */
mbed_official 15:a81a8d6c1dfe 43 /*
mbed_official 15:a81a8d6c1dfe 44 * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
mbed_official 15:a81a8d6c1dfe 45 */
mbed_official 15:a81a8d6c1dfe 46 #include <pinmux.h>
mbed_official 15:a81a8d6c1dfe 47
mbed_official 15:a81a8d6c1dfe 48 /**
mbed_official 15:a81a8d6c1dfe 49 * \internal
mbed_official 15:a81a8d6c1dfe 50 * Writes out a given configuration of a Port pin configuration to the
mbed_official 15:a81a8d6c1dfe 51 * hardware module.
mbed_official 15:a81a8d6c1dfe 52 *
mbed_official 15:a81a8d6c1dfe 53 * \note If the pin direction is set as an output, the pull-up/pull-down input
mbed_official 15:a81a8d6c1dfe 54 * configuration setting is ignored.
mbed_official 15:a81a8d6c1dfe 55 *
mbed_official 15:a81a8d6c1dfe 56 * \param[in] port Base of the PORT module to configure
mbed_official 15:a81a8d6c1dfe 57 * \param[in] pin_mask Mask of the port pin to configure
mbed_official 15:a81a8d6c1dfe 58 * \param[in] config Configuration settings for the pin
mbed_official 15:a81a8d6c1dfe 59 */
mbed_official 15:a81a8d6c1dfe 60 static void _system_pinmux_config(
mbed_official 15:a81a8d6c1dfe 61 PortGroup *const port,
mbed_official 15:a81a8d6c1dfe 62 const uint32_t pin_mask,
mbed_official 15:a81a8d6c1dfe 63 const struct system_pinmux_config *const config)
mbed_official 15:a81a8d6c1dfe 64 {
mbed_official 15:a81a8d6c1dfe 65 Assert(port);
mbed_official 15:a81a8d6c1dfe 66 Assert(config);
mbed_official 15:a81a8d6c1dfe 67
mbed_official 15:a81a8d6c1dfe 68 /* Track the configuration bits into a temporary variable before writing */
mbed_official 15:a81a8d6c1dfe 69 uint32_t pin_cfg = 0;
mbed_official 15:a81a8d6c1dfe 70
mbed_official 15:a81a8d6c1dfe 71 /* Enabled powersave mode, don't create configuration */
mbed_official 15:a81a8d6c1dfe 72 if (!config->powersave) {
mbed_official 15:a81a8d6c1dfe 73 /* Enable the pin peripheral MUX flag if non-GPIO selected (pinmux will
mbed_official 15:a81a8d6c1dfe 74 * be written later) and store the new MUX mask */
mbed_official 15:a81a8d6c1dfe 75 if (config->mux_position != SYSTEM_PINMUX_GPIO) {
mbed_official 15:a81a8d6c1dfe 76 pin_cfg |= PORT_WRCONFIG_PMUXEN;
mbed_official 15:a81a8d6c1dfe 77 pin_cfg |= (config->mux_position << PORT_WRCONFIG_PMUX_Pos);
mbed_official 15:a81a8d6c1dfe 78 }
mbed_official 15:a81a8d6c1dfe 79
mbed_official 15:a81a8d6c1dfe 80 /* Check if the user has requested that the input buffer be enabled */
mbed_official 15:a81a8d6c1dfe 81 if ((config->direction == SYSTEM_PINMUX_PIN_DIR_INPUT) ||
mbed_official 15:a81a8d6c1dfe 82 (config->direction == SYSTEM_PINMUX_PIN_DIR_OUTPUT_WITH_READBACK)) {
mbed_official 15:a81a8d6c1dfe 83 /* Enable input buffer flag */
mbed_official 15:a81a8d6c1dfe 84 pin_cfg |= PORT_WRCONFIG_INEN;
mbed_official 15:a81a8d6c1dfe 85
mbed_official 15:a81a8d6c1dfe 86 /* Enable pull-up/pull-down control flag if requested */
mbed_official 15:a81a8d6c1dfe 87 if (config->input_pull != SYSTEM_PINMUX_PIN_PULL_NONE) {
mbed_official 15:a81a8d6c1dfe 88 pin_cfg |= PORT_WRCONFIG_PULLEN;
mbed_official 15:a81a8d6c1dfe 89 }
mbed_official 15:a81a8d6c1dfe 90
mbed_official 15:a81a8d6c1dfe 91 /* Clear the port DIR bits to disable the output buffer */
mbed_official 15:a81a8d6c1dfe 92 port->DIRCLR.reg = pin_mask;
mbed_official 15:a81a8d6c1dfe 93 }
mbed_official 15:a81a8d6c1dfe 94
mbed_official 15:a81a8d6c1dfe 95 /* Check if the user has requested that the output buffer be enabled */
mbed_official 15:a81a8d6c1dfe 96 if ((config->direction == SYSTEM_PINMUX_PIN_DIR_OUTPUT) ||
mbed_official 15:a81a8d6c1dfe 97 (config->direction == SYSTEM_PINMUX_PIN_DIR_OUTPUT_WITH_READBACK)) {
mbed_official 15:a81a8d6c1dfe 98 /* Cannot use a pull-up if the output driver is enabled,
mbed_official 15:a81a8d6c1dfe 99 * if requested the input buffer can only sample the current
mbed_official 15:a81a8d6c1dfe 100 * output state */
mbed_official 15:a81a8d6c1dfe 101 pin_cfg &= ~PORT_WRCONFIG_PULLEN;
mbed_official 15:a81a8d6c1dfe 102 }
mbed_official 15:a81a8d6c1dfe 103 } else {
mbed_official 15:a81a8d6c1dfe 104 port->DIRCLR.reg = pin_mask;
mbed_official 15:a81a8d6c1dfe 105 }
mbed_official 15:a81a8d6c1dfe 106
mbed_official 15:a81a8d6c1dfe 107 /* The Write Configuration register (WRCONFIG) requires the
mbed_official 15:a81a8d6c1dfe 108 * pins to to grouped into two 16-bit half-words - split them out here */
mbed_official 15:a81a8d6c1dfe 109 uint32_t lower_pin_mask = (pin_mask & 0xFFFF);
mbed_official 15:a81a8d6c1dfe 110 uint32_t upper_pin_mask = (pin_mask >> 16);
mbed_official 15:a81a8d6c1dfe 111
mbed_official 15:a81a8d6c1dfe 112 /* Configure the lower 16-bits of the port to the desired configuration,
mbed_official 15:a81a8d6c1dfe 113 * including the pin peripheral multiplexer just in case it is enabled */
mbed_official 15:a81a8d6c1dfe 114 port->WRCONFIG.reg
mbed_official 15:a81a8d6c1dfe 115 = (lower_pin_mask << PORT_WRCONFIG_PINMASK_Pos) |
mbed_official 15:a81a8d6c1dfe 116 pin_cfg | PORT_WRCONFIG_WRPMUX | PORT_WRCONFIG_WRPINCFG;
mbed_official 15:a81a8d6c1dfe 117
mbed_official 15:a81a8d6c1dfe 118 /* Configure the upper 16-bits of the port to the desired configuration,
mbed_official 15:a81a8d6c1dfe 119 * including the pin peripheral multiplexer just in case it is enabled */
mbed_official 15:a81a8d6c1dfe 120 port->WRCONFIG.reg
mbed_official 15:a81a8d6c1dfe 121 = (upper_pin_mask << PORT_WRCONFIG_PINMASK_Pos) |
mbed_official 15:a81a8d6c1dfe 122 pin_cfg | PORT_WRCONFIG_WRPMUX | PORT_WRCONFIG_WRPINCFG |
mbed_official 15:a81a8d6c1dfe 123 PORT_WRCONFIG_HWSEL;
mbed_official 15:a81a8d6c1dfe 124
mbed_official 15:a81a8d6c1dfe 125 if(!config->powersave) {
mbed_official 15:a81a8d6c1dfe 126 /* Set the pull-up state once the port pins are configured if one was
mbed_official 15:a81a8d6c1dfe 127 * requested and it does not violate the valid set of port
mbed_official 15:a81a8d6c1dfe 128 * configurations */
mbed_official 15:a81a8d6c1dfe 129 if (pin_cfg & PORT_WRCONFIG_PULLEN) {
mbed_official 15:a81a8d6c1dfe 130 /* Set the OUT register bits to enable the pull-up if requested,
mbed_official 15:a81a8d6c1dfe 131 * clear to enable pull-down */
mbed_official 15:a81a8d6c1dfe 132 if (config->input_pull == SYSTEM_PINMUX_PIN_PULL_UP) {
mbed_official 15:a81a8d6c1dfe 133 port->OUTSET.reg = pin_mask;
mbed_official 15:a81a8d6c1dfe 134 } else {
mbed_official 15:a81a8d6c1dfe 135 port->OUTCLR.reg = pin_mask;
mbed_official 15:a81a8d6c1dfe 136 }
mbed_official 15:a81a8d6c1dfe 137 }
mbed_official 15:a81a8d6c1dfe 138
mbed_official 15:a81a8d6c1dfe 139 /* Check if the user has requested that the output buffer be enabled */
mbed_official 15:a81a8d6c1dfe 140 if ((config->direction == SYSTEM_PINMUX_PIN_DIR_OUTPUT) ||
mbed_official 15:a81a8d6c1dfe 141 (config->direction == SYSTEM_PINMUX_PIN_DIR_OUTPUT_WITH_READBACK)) {
mbed_official 15:a81a8d6c1dfe 142 /* Set the port DIR bits to enable the output buffer */
mbed_official 15:a81a8d6c1dfe 143 port->DIRSET.reg = pin_mask;
mbed_official 15:a81a8d6c1dfe 144 }
mbed_official 15:a81a8d6c1dfe 145 }
mbed_official 15:a81a8d6c1dfe 146 }
mbed_official 15:a81a8d6c1dfe 147
mbed_official 15:a81a8d6c1dfe 148 /**
mbed_official 15:a81a8d6c1dfe 149 * \brief Writes a Port pin configuration to the hardware module.
mbed_official 15:a81a8d6c1dfe 150 *
mbed_official 15:a81a8d6c1dfe 151 * Writes out a given configuration of a Port pin configuration to the hardware
mbed_official 15:a81a8d6c1dfe 152 * module.
mbed_official 15:a81a8d6c1dfe 153 *
mbed_official 15:a81a8d6c1dfe 154 * \note If the pin direction is set as an output, the pull-up/pull-down input
mbed_official 15:a81a8d6c1dfe 155 * configuration setting is ignored.
mbed_official 15:a81a8d6c1dfe 156 *
mbed_official 15:a81a8d6c1dfe 157 * \param[in] gpio_pin Index of the GPIO pin to configure
mbed_official 15:a81a8d6c1dfe 158 * \param[in] config Configuration settings for the pin
mbed_official 15:a81a8d6c1dfe 159 */
mbed_official 15:a81a8d6c1dfe 160 void system_pinmux_pin_set_config(
mbed_official 15:a81a8d6c1dfe 161 const uint8_t gpio_pin,
mbed_official 15:a81a8d6c1dfe 162 const struct system_pinmux_config *const config)
mbed_official 15:a81a8d6c1dfe 163 {
mbed_official 15:a81a8d6c1dfe 164 PortGroup *const port = system_pinmux_get_group_from_gpio_pin(gpio_pin);
mbed_official 15:a81a8d6c1dfe 165 uint32_t pin_mask = (1UL << (gpio_pin % 32));
mbed_official 15:a81a8d6c1dfe 166
mbed_official 15:a81a8d6c1dfe 167 _system_pinmux_config(port, pin_mask, config);
mbed_official 15:a81a8d6c1dfe 168 }
mbed_official 15:a81a8d6c1dfe 169
mbed_official 15:a81a8d6c1dfe 170 /**
mbed_official 15:a81a8d6c1dfe 171 * \brief Writes a Port pin group configuration to the hardware module.
mbed_official 15:a81a8d6c1dfe 172 *
mbed_official 15:a81a8d6c1dfe 173 * Writes out a given configuration of a Port pin group configuration to the
mbed_official 15:a81a8d6c1dfe 174 * hardware module.
mbed_official 15:a81a8d6c1dfe 175 *
mbed_official 15:a81a8d6c1dfe 176 * \note If the pin direction is set as an output, the pull-up/pull-down input
mbed_official 15:a81a8d6c1dfe 177 * configuration setting is ignored.
mbed_official 15:a81a8d6c1dfe 178 *
mbed_official 15:a81a8d6c1dfe 179 * \param[in] port Base of the PORT module to configure
mbed_official 15:a81a8d6c1dfe 180 * \param[in] mask Mask of the port pin(s) to configure
mbed_official 15:a81a8d6c1dfe 181 * \param[in] config Configuration settings for the pin
mbed_official 15:a81a8d6c1dfe 182 */
mbed_official 15:a81a8d6c1dfe 183 void system_pinmux_group_set_config(
mbed_official 15:a81a8d6c1dfe 184 PortGroup *const port,
mbed_official 15:a81a8d6c1dfe 185 const uint32_t mask,
mbed_official 15:a81a8d6c1dfe 186 const struct system_pinmux_config *const config)
mbed_official 15:a81a8d6c1dfe 187 {
mbed_official 15:a81a8d6c1dfe 188 Assert(port);
mbed_official 15:a81a8d6c1dfe 189
mbed_official 15:a81a8d6c1dfe 190 for (int i = 0; i < 32; i++) {
mbed_official 15:a81a8d6c1dfe 191 if (mask & (1UL << i)) {
mbed_official 15:a81a8d6c1dfe 192 _system_pinmux_config(port, (1UL << i), config);
mbed_official 15:a81a8d6c1dfe 193 }
mbed_official 15:a81a8d6c1dfe 194 }
mbed_official 15:a81a8d6c1dfe 195 }
mbed_official 15:a81a8d6c1dfe 196
mbed_official 15:a81a8d6c1dfe 197 /**
mbed_official 15:a81a8d6c1dfe 198 * \brief Configures the input sampling mode for a group of pins.
mbed_official 15:a81a8d6c1dfe 199 *
mbed_official 15:a81a8d6c1dfe 200 * Configures the input sampling mode for a group of pins, to
mbed_official 15:a81a8d6c1dfe 201 * control when the physical I/O pin value is sampled and
mbed_official 15:a81a8d6c1dfe 202 * stored inside the microcontroller.
mbed_official 15:a81a8d6c1dfe 203 *
mbed_official 15:a81a8d6c1dfe 204 * \param[in] port Base of the PORT module to configure
mbed_official 15:a81a8d6c1dfe 205 * \param[in] mask Mask of the port pin(s) to configure
mbed_official 15:a81a8d6c1dfe 206 * \param[in] mode New pin sampling mode to configure
mbed_official 15:a81a8d6c1dfe 207 */
mbed_official 15:a81a8d6c1dfe 208 void system_pinmux_group_set_input_sample_mode(
mbed_official 15:a81a8d6c1dfe 209 PortGroup *const port,
mbed_official 15:a81a8d6c1dfe 210 const uint32_t mask,
mbed_official 15:a81a8d6c1dfe 211 const enum system_pinmux_pin_sample mode)
mbed_official 15:a81a8d6c1dfe 212 {
mbed_official 15:a81a8d6c1dfe 213 Assert(port);
mbed_official 15:a81a8d6c1dfe 214
mbed_official 15:a81a8d6c1dfe 215 if (mode == SYSTEM_PINMUX_PIN_SAMPLE_ONDEMAND) {
mbed_official 15:a81a8d6c1dfe 216 port->CTRL.reg |= mask;
mbed_official 15:a81a8d6c1dfe 217 } else {
mbed_official 15:a81a8d6c1dfe 218 port->CTRL.reg &= ~mask;
mbed_official 15:a81a8d6c1dfe 219 }
mbed_official 15:a81a8d6c1dfe 220 }
mbed_official 15:a81a8d6c1dfe 221
mbed_official 15:a81a8d6c1dfe 222 #ifdef FEATURE_SYSTEM_PINMUX_SLEWRATE_LIMITER
mbed_official 15:a81a8d6c1dfe 223 /**
mbed_official 15:a81a8d6c1dfe 224 * \brief Configures the output slew rate mode for a group of pins.
mbed_official 15:a81a8d6c1dfe 225 *
mbed_official 15:a81a8d6c1dfe 226 * Configures the output slew rate mode for a group of pins, to
mbed_official 15:a81a8d6c1dfe 227 * control the speed at which the physical output pin can react to
mbed_official 15:a81a8d6c1dfe 228 * logical changes of the I/O pin value.
mbed_official 15:a81a8d6c1dfe 229 *
mbed_official 15:a81a8d6c1dfe 230 * \param[in] port Base of the PORT module to configure
mbed_official 15:a81a8d6c1dfe 231 * \param[in] mask Mask of the port pin(s) to configure
mbed_official 15:a81a8d6c1dfe 232 * \param[in] mode New pin slew rate mode to configure
mbed_official 15:a81a8d6c1dfe 233 */
mbed_official 15:a81a8d6c1dfe 234 void system_pinmux_group_set_output_slew_rate(
mbed_official 15:a81a8d6c1dfe 235 PortGroup *const port,
mbed_official 15:a81a8d6c1dfe 236 const uint32_t mask,
mbed_official 15:a81a8d6c1dfe 237 const enum system_pinmux_pin_slew_rate mode)
mbed_official 15:a81a8d6c1dfe 238 {
mbed_official 15:a81a8d6c1dfe 239 Assert(port);
mbed_official 15:a81a8d6c1dfe 240
mbed_official 15:a81a8d6c1dfe 241 for (int i = 0; i < 32; i++) {
mbed_official 15:a81a8d6c1dfe 242 if (mask & (1UL << i)) {
mbed_official 15:a81a8d6c1dfe 243 if (mode == SYSTEM_PINMUX_PIN_SLEW_RATE_LIMITED) {
mbed_official 15:a81a8d6c1dfe 244 port->PINCFG[i].reg |= PORT_PINCFG_SLEWLIM;
mbed_official 15:a81a8d6c1dfe 245 } else {
mbed_official 15:a81a8d6c1dfe 246 port->PINCFG[i].reg &= ~PORT_PINCFG_SLEWLIM;
mbed_official 15:a81a8d6c1dfe 247 }
mbed_official 15:a81a8d6c1dfe 248 }
mbed_official 15:a81a8d6c1dfe 249 }
mbed_official 15:a81a8d6c1dfe 250 }
mbed_official 15:a81a8d6c1dfe 251 #endif
mbed_official 15:a81a8d6c1dfe 252
mbed_official 15:a81a8d6c1dfe 253 #ifdef FEATURE_SYSTEM_PINMUX_DRIVE_STRENGTH
mbed_official 15:a81a8d6c1dfe 254 /**
mbed_official 15:a81a8d6c1dfe 255 * \brief Configures the output driver strength mode for a group of pins.
mbed_official 15:a81a8d6c1dfe 256 *
mbed_official 15:a81a8d6c1dfe 257 * Configures the output drive strength for a group of pins, to
mbed_official 15:a81a8d6c1dfe 258 * control the amount of current the pad is able to sink/source.
mbed_official 15:a81a8d6c1dfe 259 *
mbed_official 15:a81a8d6c1dfe 260 * \param[in] port Base of the PORT module to configure
mbed_official 15:a81a8d6c1dfe 261 * \param[in] mask Mask of the port pin(s) to configure
mbed_official 15:a81a8d6c1dfe 262 * \param[in] mode New output driver strength mode to configure
mbed_official 15:a81a8d6c1dfe 263 */
mbed_official 15:a81a8d6c1dfe 264 void system_pinmux_group_set_output_strength(
mbed_official 15:a81a8d6c1dfe 265 PortGroup *const port,
mbed_official 15:a81a8d6c1dfe 266 const uint32_t mask,
mbed_official 15:a81a8d6c1dfe 267 const enum system_pinmux_pin_strength mode)
mbed_official 15:a81a8d6c1dfe 268 {
mbed_official 15:a81a8d6c1dfe 269 Assert(port);
mbed_official 15:a81a8d6c1dfe 270
mbed_official 15:a81a8d6c1dfe 271 for (int i = 0; i < 32; i++) {
mbed_official 15:a81a8d6c1dfe 272 if (mask & (1UL << i)) {
mbed_official 15:a81a8d6c1dfe 273 if (mode == SYSTEM_PINMUX_PIN_STRENGTH_HIGH) {
mbed_official 15:a81a8d6c1dfe 274 port->PINCFG[i].reg |= PORT_PINCFG_DRVSTR;
mbed_official 15:a81a8d6c1dfe 275 } else {
mbed_official 15:a81a8d6c1dfe 276 port->PINCFG[i].reg &= ~PORT_PINCFG_DRVSTR;
mbed_official 15:a81a8d6c1dfe 277 }
mbed_official 15:a81a8d6c1dfe 278 }
mbed_official 15:a81a8d6c1dfe 279 }
mbed_official 15:a81a8d6c1dfe 280 }
mbed_official 15:a81a8d6c1dfe 281 #endif
mbed_official 15:a81a8d6c1dfe 282
mbed_official 15:a81a8d6c1dfe 283 #ifdef FEATURE_SYSTEM_PINMUX_OPEN_DRAIN
mbed_official 15:a81a8d6c1dfe 284 /**
mbed_official 15:a81a8d6c1dfe 285 * \brief Configures the output driver mode for a group of pins.
mbed_official 15:a81a8d6c1dfe 286 *
mbed_official 15:a81a8d6c1dfe 287 * Configures the output driver mode for a group of pins, to
mbed_official 15:a81a8d6c1dfe 288 * control the pad behavior.
mbed_official 15:a81a8d6c1dfe 289 *
mbed_official 15:a81a8d6c1dfe 290 * \param[in] port Base of the PORT module to configure
mbed_official 15:a81a8d6c1dfe 291 * \param[in] mask Mask of the port pin(s) to configure
mbed_official 15:a81a8d6c1dfe 292 * \param[in] mode New pad output driver mode to configure
mbed_official 15:a81a8d6c1dfe 293 */
mbed_official 15:a81a8d6c1dfe 294 void system_pinmux_group_set_output_drive(
mbed_official 15:a81a8d6c1dfe 295 PortGroup *const port,
mbed_official 15:a81a8d6c1dfe 296 const uint32_t mask,
mbed_official 15:a81a8d6c1dfe 297 const enum system_pinmux_pin_drive mode)
mbed_official 15:a81a8d6c1dfe 298 {
mbed_official 15:a81a8d6c1dfe 299 Assert(port);
mbed_official 15:a81a8d6c1dfe 300
mbed_official 15:a81a8d6c1dfe 301 for (int i = 0; i < 32; i++) {
mbed_official 15:a81a8d6c1dfe 302 if (mask & (1UL << i)) {
mbed_official 15:a81a8d6c1dfe 303 if (mode == SYSTEM_PINMUX_PIN_DRIVE_OPEN_DRAIN) {
mbed_official 15:a81a8d6c1dfe 304 port->PINCFG[i].reg |= PORT_PINCFG_ODRAIN;
mbed_official 15:a81a8d6c1dfe 305 } else {
mbed_official 15:a81a8d6c1dfe 306 port->PINCFG[i].reg &= ~PORT_PINCFG_ODRAIN;
mbed_official 15:a81a8d6c1dfe 307 }
mbed_official 15:a81a8d6c1dfe 308 }
mbed_official 15:a81a8d6c1dfe 309 }
mbed_official 15:a81a8d6c1dfe 310 }
mbed_official 15:a81a8d6c1dfe 311 #endif