Bizan Nishimura / Mbed 2 deprecated MiniSteer3

AndroidのBLEラジコンプロポアプリ「BLEPropo」と接続し、RCサーボとDCモータを制御するプログラムです。 BLE Nanoで動作を確認しています。 BLEPropo → https://github.com/lipoyang/BLEPropo

Dependencies:   BLE_API mbed

BLEを使ったAndroid用ラジコンプロポアプリ「BLEPropo」に対応するBLE Nano用ファームウェアです。
BLEPropoは、GitHubにて公開中。
https://github.com/lipoyang/BLEPropo
/media/uploads/lipoyang/blepropo_ui.png
ラジコンは、mbed HRM1017とRCサーボやDCモータを組み合わせて作ります。
/media/uploads/lipoyang/ministeer3.jpg
回路図
/media/uploads/lipoyang/ministeer3.pdf

nRF51822/nordic/nrf-sdk/nrf_gpio.h@5:7f89fca19a9e, 2015-03-14 (annotated)

Committer:
lipoyang
Date:
Sat Mar 14 12:02:48 2015 +0000
Revision:
5:7f89fca19a9e
-convert nRF51822 library to a folder

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lipoyang 5:7f89fca19a9e 1 #ifndef NRF_GPIO_H__
lipoyang 5:7f89fca19a9e 2 #define NRF_GPIO_H__
lipoyang 5:7f89fca19a9e 3
lipoyang 5:7f89fca19a9e 4 #include "nrf51.h"
lipoyang 5:7f89fca19a9e 5 #include "nrf51_bitfields.h"
lipoyang 5:7f89fca19a9e 6
lipoyang 5:7f89fca19a9e 7 /**
lipoyang 5:7f89fca19a9e 8 * @defgroup nrf_gpio GPIO abstraction
lipoyang 5:7f89fca19a9e 9 * @{
lipoyang 5:7f89fca19a9e 10 * @ingroup nrf_drivers
lipoyang 5:7f89fca19a9e 11 * @brief GPIO pin abstraction and port abstraction for reading and writing byte-wise to GPIO ports.
lipoyang 5:7f89fca19a9e 12 *
lipoyang 5:7f89fca19a9e 13 * Here, the GPIO ports are defined as follows:
lipoyang 5:7f89fca19a9e 14 * - Port 0 -> pin 0-7
lipoyang 5:7f89fca19a9e 15 * - Port 1 -> pin 8-15
lipoyang 5:7f89fca19a9e 16 * - Port 2 -> pin 16-23
lipoyang 5:7f89fca19a9e 17 * - Port 3 -> pin 24-31
lipoyang 5:7f89fca19a9e 18 */
lipoyang 5:7f89fca19a9e 19
lipoyang 5:7f89fca19a9e 20 /**
lipoyang 5:7f89fca19a9e 21 * @enum nrf_gpio_port_dir_t
lipoyang 5:7f89fca19a9e 22 * @brief Enumerator used for setting the direction of a GPIO port.
lipoyang 5:7f89fca19a9e 23 */
lipoyang 5:7f89fca19a9e 24 typedef enum
lipoyang 5:7f89fca19a9e 25 {
lipoyang 5:7f89fca19a9e 26 NRF_GPIO_PORT_DIR_OUTPUT, ///< Output
lipoyang 5:7f89fca19a9e 27 NRF_GPIO_PORT_DIR_INPUT ///< Input
lipoyang 5:7f89fca19a9e 28 } nrf_gpio_port_dir_t;
lipoyang 5:7f89fca19a9e 29
lipoyang 5:7f89fca19a9e 30 /**
lipoyang 5:7f89fca19a9e 31 * @enum nrf_gpio_pin_dir_t
lipoyang 5:7f89fca19a9e 32 * Pin direction definitions.
lipoyang 5:7f89fca19a9e 33 */
lipoyang 5:7f89fca19a9e 34 typedef enum
lipoyang 5:7f89fca19a9e 35 {
lipoyang 5:7f89fca19a9e 36 NRF_GPIO_PIN_DIR_INPUT, ///< Input
lipoyang 5:7f89fca19a9e 37 NRF_GPIO_PIN_DIR_OUTPUT ///< Output
lipoyang 5:7f89fca19a9e 38 } nrf_gpio_pin_dir_t;
lipoyang 5:7f89fca19a9e 39
lipoyang 5:7f89fca19a9e 40 /**
lipoyang 5:7f89fca19a9e 41 * @enum nrf_gpio_port_select_t
lipoyang 5:7f89fca19a9e 42 * @brief Enumerator used for selecting between port 0 - 3.
lipoyang 5:7f89fca19a9e 43 */
lipoyang 5:7f89fca19a9e 44 typedef enum
lipoyang 5:7f89fca19a9e 45 {
lipoyang 5:7f89fca19a9e 46 NRF_GPIO_PORT_SELECT_PORT0 = 0, ///< Port 0 (GPIO pin 0-7)
lipoyang 5:7f89fca19a9e 47 NRF_GPIO_PORT_SELECT_PORT1, ///< Port 1 (GPIO pin 8-15)
lipoyang 5:7f89fca19a9e 48 NRF_GPIO_PORT_SELECT_PORT2, ///< Port 2 (GPIO pin 16-23)
lipoyang 5:7f89fca19a9e 49 NRF_GPIO_PORT_SELECT_PORT3, ///< Port 3 (GPIO pin 24-31)
lipoyang 5:7f89fca19a9e 50 } nrf_gpio_port_select_t;
lipoyang 5:7f89fca19a9e 51
lipoyang 5:7f89fca19a9e 52 /**
lipoyang 5:7f89fca19a9e 53 * @enum nrf_gpio_pin_pull_t
lipoyang 5:7f89fca19a9e 54 * @brief Enumerator used for selecting the pin to be pulled down or up at the time of pin configuration
lipoyang 5:7f89fca19a9e 55 */
lipoyang 5:7f89fca19a9e 56 typedef enum
lipoyang 5:7f89fca19a9e 57 {
lipoyang 5:7f89fca19a9e 58 NRF_GPIO_PIN_NOPULL = GPIO_PIN_CNF_PULL_Disabled, ///< Pin pullup resistor disabled
lipoyang 5:7f89fca19a9e 59 NRF_GPIO_PIN_PULLDOWN = GPIO_PIN_CNF_PULL_Pulldown, ///< Pin pulldown resistor enabled
lipoyang 5:7f89fca19a9e 60 NRF_GPIO_PIN_PULLUP = GPIO_PIN_CNF_PULL_Pullup, ///< Pin pullup resistor enabled
lipoyang 5:7f89fca19a9e 61 } nrf_gpio_pin_pull_t;
lipoyang 5:7f89fca19a9e 62
lipoyang 5:7f89fca19a9e 63 /**
lipoyang 5:7f89fca19a9e 64 * @enum nrf_gpio_pin_sense_t
lipoyang 5:7f89fca19a9e 65 * @brief Enumerator used for selecting the pin to sense high or low level on the pin input.
lipoyang 5:7f89fca19a9e 66 */
lipoyang 5:7f89fca19a9e 67 typedef enum
lipoyang 5:7f89fca19a9e 68 {
lipoyang 5:7f89fca19a9e 69 NRF_GPIO_PIN_NOSENSE = GPIO_PIN_CNF_SENSE_Disabled, ///< Pin sense level disabled.
lipoyang 5:7f89fca19a9e 70 NRF_GPIO_PIN_SENSE_LOW = GPIO_PIN_CNF_SENSE_Low, ///< Pin sense low level.
lipoyang 5:7f89fca19a9e 71 NRF_GPIO_PIN_SENSE_HIGH = GPIO_PIN_CNF_SENSE_High, ///< Pin sense high level.
lipoyang 5:7f89fca19a9e 72 } nrf_gpio_pin_sense_t;
lipoyang 5:7f89fca19a9e 73
lipoyang 5:7f89fca19a9e 74 /**
lipoyang 5:7f89fca19a9e 75 * @brief Function for configuring the GPIO pin range as outputs with normal drive strength.
lipoyang 5:7f89fca19a9e 76 * This function can be used to configure pin range as simple output with gate driving GPIO_PIN_CNF_DRIVE_S0S1 (normal cases).
lipoyang 5:7f89fca19a9e 77 *
lipoyang 5:7f89fca19a9e 78 * @param pin_range_start specifies the start number (inclusive) in the range of pin numbers to be configured (allowed values 0-30)
lipoyang 5:7f89fca19a9e 79 *
lipoyang 5:7f89fca19a9e 80 * @param pin_range_end specifies the end number (inclusive) in the range of pin numbers to be configured (allowed values 0-30)
lipoyang 5:7f89fca19a9e 81 *
lipoyang 5:7f89fca19a9e 82 * @note For configuring only one pin as output use @ref nrf_gpio_cfg_output
lipoyang 5:7f89fca19a9e 83 * Sense capability on the pin is disabled, and input is disconnected from the buffer as the pins are configured as output.
lipoyang 5:7f89fca19a9e 84 */
lipoyang 5:7f89fca19a9e 85 static __INLINE void nrf_gpio_range_cfg_output(uint32_t pin_range_start, uint32_t pin_range_end)
lipoyang 5:7f89fca19a9e 86 {
lipoyang 5:7f89fca19a9e 87 /*lint -e{845} // A zero has been given as right argument to operator '|'" */
lipoyang 5:7f89fca19a9e 88 for (; pin_range_start <= pin_range_end; pin_range_start++)
lipoyang 5:7f89fca19a9e 89 {
lipoyang 5:7f89fca19a9e 90 NRF_GPIO->PIN_CNF[pin_range_start] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos)
lipoyang 5:7f89fca19a9e 91 | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos)
lipoyang 5:7f89fca19a9e 92 | (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos)
lipoyang 5:7f89fca19a9e 93 | (GPIO_PIN_CNF_INPUT_Disconnect << GPIO_PIN_CNF_INPUT_Pos)
lipoyang 5:7f89fca19a9e 94 | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
lipoyang 5:7f89fca19a9e 95 }
lipoyang 5:7f89fca19a9e 96 }
lipoyang 5:7f89fca19a9e 97
lipoyang 5:7f89fca19a9e 98 /**
lipoyang 5:7f89fca19a9e 99 * @brief Function for configuring the GPIO pin range as inputs with given initial value set, hiding inner details.
lipoyang 5:7f89fca19a9e 100 * This function can be used to configure pin range as simple input.
lipoyang 5:7f89fca19a9e 101 *
lipoyang 5:7f89fca19a9e 102 * @param pin_range_start specifies the start number (inclusive) in the range of pin numbers to be configured (allowed values 0-30)
lipoyang 5:7f89fca19a9e 103 *
lipoyang 5:7f89fca19a9e 104 * @param pin_range_end specifies the end number (inclusive) in the range of pin numbers to be configured (allowed values 0-30)
lipoyang 5:7f89fca19a9e 105 *
lipoyang 5:7f89fca19a9e 106 * @param pull_config State of the pin range pull resistor (no pull, pulled down or pulled high)
lipoyang 5:7f89fca19a9e 107 *
lipoyang 5:7f89fca19a9e 108 * @note For configuring only one pin as input use @ref nrf_gpio_cfg_input
lipoyang 5:7f89fca19a9e 109 * Sense capability on the pin is disabled, and input is connected to buffer so that the GPIO->IN register is readable
lipoyang 5:7f89fca19a9e 110 */
lipoyang 5:7f89fca19a9e 111 static __INLINE void nrf_gpio_range_cfg_input(uint32_t pin_range_start, uint32_t pin_range_end, nrf_gpio_pin_pull_t pull_config)
lipoyang 5:7f89fca19a9e 112 {
lipoyang 5:7f89fca19a9e 113 /*lint -e{845} // A zero has been given as right argument to operator '|'" */
lipoyang 5:7f89fca19a9e 114 for (; pin_range_start <= pin_range_end; pin_range_start++)
lipoyang 5:7f89fca19a9e 115 {
lipoyang 5:7f89fca19a9e 116 NRF_GPIO->PIN_CNF[pin_range_start] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos)
lipoyang 5:7f89fca19a9e 117 | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos)
lipoyang 5:7f89fca19a9e 118 | (pull_config << GPIO_PIN_CNF_PULL_Pos)
lipoyang 5:7f89fca19a9e 119 | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos)
lipoyang 5:7f89fca19a9e 120 | (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
lipoyang 5:7f89fca19a9e 121 }
lipoyang 5:7f89fca19a9e 122 }
lipoyang 5:7f89fca19a9e 123
lipoyang 5:7f89fca19a9e 124 /**
lipoyang 5:7f89fca19a9e 125 * @brief Function for configuring the given GPIO pin number as output with given initial value set, hiding inner details.
lipoyang 5:7f89fca19a9e 126 * This function can be used to configure pin range as simple input with gate driving GPIO_PIN_CNF_DRIVE_S0S1 (normal cases).
lipoyang 5:7f89fca19a9e 127 *
lipoyang 5:7f89fca19a9e 128 * @param pin_number specifies the pin number of gpio pin numbers to be configured (allowed values 0-30)
lipoyang 5:7f89fca19a9e 129 *
lipoyang 5:7f89fca19a9e 130 * @note Sense capability on the pin is disabled, and input is disconnected from the buffer as the pins are configured as output.
lipoyang 5:7f89fca19a9e 131 */
lipoyang 5:7f89fca19a9e 132 static __INLINE void nrf_gpio_cfg_output(uint32_t pin_number)
lipoyang 5:7f89fca19a9e 133 {
lipoyang 5:7f89fca19a9e 134 /*lint -e{845} // A zero has been given as right argument to operator '|'" */
lipoyang 5:7f89fca19a9e 135 NRF_GPIO->PIN_CNF[pin_number] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos)
lipoyang 5:7f89fca19a9e 136 | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos)
lipoyang 5:7f89fca19a9e 137 | (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos)
lipoyang 5:7f89fca19a9e 138 | (GPIO_PIN_CNF_INPUT_Disconnect << GPIO_PIN_CNF_INPUT_Pos)
lipoyang 5:7f89fca19a9e 139 | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
lipoyang 5:7f89fca19a9e 140 }
lipoyang 5:7f89fca19a9e 141
lipoyang 5:7f89fca19a9e 142 /**
lipoyang 5:7f89fca19a9e 143 * @brief Function for configuring the given GPIO pin number as input with given initial value set, hiding inner details.
lipoyang 5:7f89fca19a9e 144 * This function can be used to configure pin range as simple input with gate driving GPIO_PIN_CNF_DRIVE_S0S1 (normal cases).
lipoyang 5:7f89fca19a9e 145 *
lipoyang 5:7f89fca19a9e 146 * @param pin_number specifies the pin number of gpio pin numbers to be configured (allowed values 0-30)
lipoyang 5:7f89fca19a9e 147 *
lipoyang 5:7f89fca19a9e 148 * @param pull_config State of the pin range pull resistor (no pull, pulled down or pulled high)
lipoyang 5:7f89fca19a9e 149 *
lipoyang 5:7f89fca19a9e 150 * @note Sense capability on the pin is disabled, and input is connected to buffer so that the GPIO->IN register is readable
lipoyang 5:7f89fca19a9e 151 */
lipoyang 5:7f89fca19a9e 152 static __INLINE void nrf_gpio_cfg_input(uint32_t pin_number, nrf_gpio_pin_pull_t pull_config)
lipoyang 5:7f89fca19a9e 153 {
lipoyang 5:7f89fca19a9e 154 /*lint -e{845} // A zero has been given as right argument to operator '|'" */
lipoyang 5:7f89fca19a9e 155 NRF_GPIO->PIN_CNF[pin_number] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos)
lipoyang 5:7f89fca19a9e 156 | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos)
lipoyang 5:7f89fca19a9e 157 | (pull_config << GPIO_PIN_CNF_PULL_Pos)
lipoyang 5:7f89fca19a9e 158 | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos)
lipoyang 5:7f89fca19a9e 159 | (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
lipoyang 5:7f89fca19a9e 160 }
lipoyang 5:7f89fca19a9e 161
lipoyang 5:7f89fca19a9e 162 /**
lipoyang 5:7f89fca19a9e 163 * @brief Function for configuring the given GPIO pin number as input with given initial value set, hiding inner details.
lipoyang 5:7f89fca19a9e 164 * This function can be used to configure pin range as simple input with gate driving GPIO_PIN_CNF_DRIVE_S0S1 (normal cases).
lipoyang 5:7f89fca19a9e 165 * Sense capability on the pin is configurable, and input is connected to buffer so that the GPIO->IN register is readable.
lipoyang 5:7f89fca19a9e 166 *
lipoyang 5:7f89fca19a9e 167 * @param pin_number specifies the pin number of gpio pin numbers to be configured (allowed values 0-30).
lipoyang 5:7f89fca19a9e 168 *
lipoyang 5:7f89fca19a9e 169 * @param pull_config state of the pin pull resistor (no pull, pulled down or pulled high).
lipoyang 5:7f89fca19a9e 170 *
lipoyang 5:7f89fca19a9e 171 * @param sense_config sense level of the pin (no sense, sense low or sense high).
lipoyang 5:7f89fca19a9e 172 */
lipoyang 5:7f89fca19a9e 173 static __INLINE void nrf_gpio_cfg_sense_input(uint32_t pin_number, nrf_gpio_pin_pull_t pull_config, nrf_gpio_pin_sense_t sense_config)
lipoyang 5:7f89fca19a9e 174 {
lipoyang 5:7f89fca19a9e 175 /*lint -e{845} // A zero has been given as right argument to operator '|'" */
lipoyang 5:7f89fca19a9e 176 NRF_GPIO->PIN_CNF[pin_number] = (sense_config << GPIO_PIN_CNF_SENSE_Pos)
lipoyang 5:7f89fca19a9e 177 | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos)
lipoyang 5:7f89fca19a9e 178 | (pull_config << GPIO_PIN_CNF_PULL_Pos)
lipoyang 5:7f89fca19a9e 179 | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos)
lipoyang 5:7f89fca19a9e 180 | (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
lipoyang 5:7f89fca19a9e 181 }
lipoyang 5:7f89fca19a9e 182
lipoyang 5:7f89fca19a9e 183 /**
lipoyang 5:7f89fca19a9e 184 * @brief Function for setting the direction for a GPIO pin.
lipoyang 5:7f89fca19a9e 185 *
lipoyang 5:7f89fca19a9e 186 * @param pin_number specifies the pin number [0:31] for which to
lipoyang 5:7f89fca19a9e 187 * set the direction.
lipoyang 5:7f89fca19a9e 188 *
lipoyang 5:7f89fca19a9e 189 * @param direction specifies the direction
lipoyang 5:7f89fca19a9e 190 */
lipoyang 5:7f89fca19a9e 191 static __INLINE void nrf_gpio_pin_dir_set(uint32_t pin_number, nrf_gpio_pin_dir_t direction)
lipoyang 5:7f89fca19a9e 192 {
lipoyang 5:7f89fca19a9e 193 if(direction == NRF_GPIO_PIN_DIR_INPUT)
lipoyang 5:7f89fca19a9e 194 {
lipoyang 5:7f89fca19a9e 195 NRF_GPIO->PIN_CNF[pin_number] =
lipoyang 5:7f89fca19a9e 196 (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos)
lipoyang 5:7f89fca19a9e 197 | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos)
lipoyang 5:7f89fca19a9e 198 | (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos)
lipoyang 5:7f89fca19a9e 199 | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos)
lipoyang 5:7f89fca19a9e 200 | (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
lipoyang 5:7f89fca19a9e 201 }
lipoyang 5:7f89fca19a9e 202 else
lipoyang 5:7f89fca19a9e 203 {
lipoyang 5:7f89fca19a9e 204 NRF_GPIO->DIRSET = (1UL << pin_number);
lipoyang 5:7f89fca19a9e 205 }
lipoyang 5:7f89fca19a9e 206 }
lipoyang 5:7f89fca19a9e 207
lipoyang 5:7f89fca19a9e 208 /**
lipoyang 5:7f89fca19a9e 209 * @brief Function for setting a GPIO pin.
lipoyang 5:7f89fca19a9e 210 *
lipoyang 5:7f89fca19a9e 211 * Note that the pin must be configured as an output for this
lipoyang 5:7f89fca19a9e 212 * function to have any effect.
lipoyang 5:7f89fca19a9e 213 *
lipoyang 5:7f89fca19a9e 214 * @param pin_number specifies the pin number [0:31] to
lipoyang 5:7f89fca19a9e 215 * set.
lipoyang 5:7f89fca19a9e 216 */
lipoyang 5:7f89fca19a9e 217 static __INLINE void nrf_gpio_pin_set(uint32_t pin_number)
lipoyang 5:7f89fca19a9e 218 {
lipoyang 5:7f89fca19a9e 219 NRF_GPIO->OUTSET = (1UL << pin_number);
lipoyang 5:7f89fca19a9e 220 }
lipoyang 5:7f89fca19a9e 221
lipoyang 5:7f89fca19a9e 222 /**
lipoyang 5:7f89fca19a9e 223 * @brief Function for clearing a GPIO pin.
lipoyang 5:7f89fca19a9e 224 *
lipoyang 5:7f89fca19a9e 225 * Note that the pin must be configured as an output for this
lipoyang 5:7f89fca19a9e 226 * function to have any effect.
lipoyang 5:7f89fca19a9e 227 *
lipoyang 5:7f89fca19a9e 228 * @param pin_number specifies the pin number [0:31] to
lipoyang 5:7f89fca19a9e 229 * clear.
lipoyang 5:7f89fca19a9e 230 */
lipoyang 5:7f89fca19a9e 231 static __INLINE void nrf_gpio_pin_clear(uint32_t pin_number)
lipoyang 5:7f89fca19a9e 232 {
lipoyang 5:7f89fca19a9e 233 NRF_GPIO->OUTCLR = (1UL << pin_number);
lipoyang 5:7f89fca19a9e 234 }
lipoyang 5:7f89fca19a9e 235
lipoyang 5:7f89fca19a9e 236 /**
lipoyang 5:7f89fca19a9e 237 * @brief Function for toggling a GPIO pin.
lipoyang 5:7f89fca19a9e 238 *
lipoyang 5:7f89fca19a9e 239 * Note that the pin must be configured as an output for this
lipoyang 5:7f89fca19a9e 240 * function to have any effect.
lipoyang 5:7f89fca19a9e 241 *
lipoyang 5:7f89fca19a9e 242 * @param pin_number specifies the pin number [0:31] to
lipoyang 5:7f89fca19a9e 243 * toggle.
lipoyang 5:7f89fca19a9e 244 */
lipoyang 5:7f89fca19a9e 245 static __INLINE void nrf_gpio_pin_toggle(uint32_t pin_number)
lipoyang 5:7f89fca19a9e 246 {
lipoyang 5:7f89fca19a9e 247 const uint32_t pin_bit = 1UL << pin_number;
lipoyang 5:7f89fca19a9e 248 const uint32_t pin_state = ((NRF_GPIO->OUT >> pin_number) & 1UL);
lipoyang 5:7f89fca19a9e 249
lipoyang 5:7f89fca19a9e 250 if (pin_state == 0)
lipoyang 5:7f89fca19a9e 251 {
lipoyang 5:7f89fca19a9e 252 // Current state low, set high.
lipoyang 5:7f89fca19a9e 253 NRF_GPIO->OUTSET = pin_bit;
lipoyang 5:7f89fca19a9e 254 }
lipoyang 5:7f89fca19a9e 255 else
lipoyang 5:7f89fca19a9e 256 {
lipoyang 5:7f89fca19a9e 257 // Current state high, set low.
lipoyang 5:7f89fca19a9e 258 NRF_GPIO->OUTCLR = pin_bit;
lipoyang 5:7f89fca19a9e 259 }
lipoyang 5:7f89fca19a9e 260 }
lipoyang 5:7f89fca19a9e 261
lipoyang 5:7f89fca19a9e 262 /**
lipoyang 5:7f89fca19a9e 263 * @brief Function for writing a value to a GPIO pin.
lipoyang 5:7f89fca19a9e 264 *
lipoyang 5:7f89fca19a9e 265 * Note that the pin must be configured as an output for this
lipoyang 5:7f89fca19a9e 266 * function to have any effect.
lipoyang 5:7f89fca19a9e 267 *
lipoyang 5:7f89fca19a9e 268 * @param pin_number specifies the pin number [0:31] to
lipoyang 5:7f89fca19a9e 269 * write.
lipoyang 5:7f89fca19a9e 270 *
lipoyang 5:7f89fca19a9e 271 * @param value specifies the value to be written to the pin.
lipoyang 5:7f89fca19a9e 272 * @arg 0 clears the pin
lipoyang 5:7f89fca19a9e 273 * @arg >=1 sets the pin.
lipoyang 5:7f89fca19a9e 274 */
lipoyang 5:7f89fca19a9e 275 static __INLINE void nrf_gpio_pin_write(uint32_t pin_number, uint32_t value)
lipoyang 5:7f89fca19a9e 276 {
lipoyang 5:7f89fca19a9e 277 if (value == 0)
lipoyang 5:7f89fca19a9e 278 {
lipoyang 5:7f89fca19a9e 279 nrf_gpio_pin_clear(pin_number);
lipoyang 5:7f89fca19a9e 280 }
lipoyang 5:7f89fca19a9e 281 else
lipoyang 5:7f89fca19a9e 282 {
lipoyang 5:7f89fca19a9e 283 nrf_gpio_pin_set(pin_number);
lipoyang 5:7f89fca19a9e 284 }
lipoyang 5:7f89fca19a9e 285 }
lipoyang 5:7f89fca19a9e 286
lipoyang 5:7f89fca19a9e 287 /**
lipoyang 5:7f89fca19a9e 288 * @brief Function for reading the input level of a GPIO pin.
lipoyang 5:7f89fca19a9e 289 *
lipoyang 5:7f89fca19a9e 290 * Note that the pin must have input connected for the value
lipoyang 5:7f89fca19a9e 291 * returned from this function to be valid.
lipoyang 5:7f89fca19a9e 292 *
lipoyang 5:7f89fca19a9e 293 * @param pin_number specifies the pin number [0:31] to
lipoyang 5:7f89fca19a9e 294 * read.
lipoyang 5:7f89fca19a9e 295 *
lipoyang 5:7f89fca19a9e 296 * @return
lipoyang 5:7f89fca19a9e 297 * @retval 0 if the pin input level is low.
lipoyang 5:7f89fca19a9e 298 * @retval 1 if the pin input level is high.
lipoyang 5:7f89fca19a9e 299 * @retval > 1 should never occur.
lipoyang 5:7f89fca19a9e 300 */
lipoyang 5:7f89fca19a9e 301 static __INLINE uint32_t nrf_gpio_pin_read(uint32_t pin_number)
lipoyang 5:7f89fca19a9e 302 {
lipoyang 5:7f89fca19a9e 303 return ((NRF_GPIO->IN >> pin_number) & 1UL);
lipoyang 5:7f89fca19a9e 304 }
lipoyang 5:7f89fca19a9e 305
lipoyang 5:7f89fca19a9e 306 /**
lipoyang 5:7f89fca19a9e 307 * @brief Generic function for writing a single byte of a 32 bit word at a given
lipoyang 5:7f89fca19a9e 308 * address.
lipoyang 5:7f89fca19a9e 309 *
lipoyang 5:7f89fca19a9e 310 * This function should not be called from outside the nrf_gpio
lipoyang 5:7f89fca19a9e 311 * abstraction layer.
lipoyang 5:7f89fca19a9e 312 *
lipoyang 5:7f89fca19a9e 313 * @param word_address is the address of the word to be written.
lipoyang 5:7f89fca19a9e 314 *
lipoyang 5:7f89fca19a9e 315 * @param byte_no is the the word byte number (0-3) to be written.
lipoyang 5:7f89fca19a9e 316 *
lipoyang 5:7f89fca19a9e 317 * @param value is the value to be written to byte "byte_no" of word
lipoyang 5:7f89fca19a9e 318 * at address "word_address"
lipoyang 5:7f89fca19a9e 319 */
lipoyang 5:7f89fca19a9e 320 static __INLINE void nrf_gpio_word_byte_write(volatile uint32_t * word_address, uint8_t byte_no, uint8_t value)
lipoyang 5:7f89fca19a9e 321 {
lipoyang 5:7f89fca19a9e 322 *((volatile uint8_t*)(word_address) + byte_no) = value;
lipoyang 5:7f89fca19a9e 323 }
lipoyang 5:7f89fca19a9e 324
lipoyang 5:7f89fca19a9e 325 /**
lipoyang 5:7f89fca19a9e 326 * @brief Generic function for reading a single byte of a 32 bit word at a given
lipoyang 5:7f89fca19a9e 327 * address.
lipoyang 5:7f89fca19a9e 328 *
lipoyang 5:7f89fca19a9e 329 * This function should not be called from outside the nrf_gpio
lipoyang 5:7f89fca19a9e 330 * abstraction layer.
lipoyang 5:7f89fca19a9e 331 *
lipoyang 5:7f89fca19a9e 332 * @param word_address is the address of the word to be read.
lipoyang 5:7f89fca19a9e 333 *
lipoyang 5:7f89fca19a9e 334 * @param byte_no is the the byte number (0-3) of the word to be read.
lipoyang 5:7f89fca19a9e 335 *
lipoyang 5:7f89fca19a9e 336 * @return byte "byte_no" of word at address "word_address".
lipoyang 5:7f89fca19a9e 337 */
lipoyang 5:7f89fca19a9e 338 static __INLINE uint8_t nrf_gpio_word_byte_read(const volatile uint32_t* word_address, uint8_t byte_no)
lipoyang 5:7f89fca19a9e 339 {
lipoyang 5:7f89fca19a9e 340 return (*((const volatile uint8_t*)(word_address) + byte_no));
lipoyang 5:7f89fca19a9e 341 }
lipoyang 5:7f89fca19a9e 342
lipoyang 5:7f89fca19a9e 343 /**
lipoyang 5:7f89fca19a9e 344 * @brief Function for setting the direction of a port.
lipoyang 5:7f89fca19a9e 345 *
lipoyang 5:7f89fca19a9e 346 * @param port is the port for which to set the direction.
lipoyang 5:7f89fca19a9e 347 *
lipoyang 5:7f89fca19a9e 348 * @param dir direction to be set for this port.
lipoyang 5:7f89fca19a9e 349 */
lipoyang 5:7f89fca19a9e 350 static __INLINE void nrf_gpio_port_dir_set(nrf_gpio_port_select_t port, nrf_gpio_port_dir_t dir)
lipoyang 5:7f89fca19a9e 351 {
lipoyang 5:7f89fca19a9e 352 if (dir == NRF_GPIO_PORT_DIR_OUTPUT)
lipoyang 5:7f89fca19a9e 353 {
lipoyang 5:7f89fca19a9e 354 nrf_gpio_word_byte_write(&NRF_GPIO->DIRSET, port, 0xFF);
lipoyang 5:7f89fca19a9e 355 }
lipoyang 5:7f89fca19a9e 356 else
lipoyang 5:7f89fca19a9e 357 {
lipoyang 5:7f89fca19a9e 358 nrf_gpio_range_cfg_input(port*8, (port+1)*8-1, NRF_GPIO_PIN_NOPULL);
lipoyang 5:7f89fca19a9e 359 }
lipoyang 5:7f89fca19a9e 360 }
lipoyang 5:7f89fca19a9e 361
lipoyang 5:7f89fca19a9e 362 /**
lipoyang 5:7f89fca19a9e 363 * @brief Function for reading a GPIO port.
lipoyang 5:7f89fca19a9e 364 *
lipoyang 5:7f89fca19a9e 365 * @param port is the port to read.
lipoyang 5:7f89fca19a9e 366 *
lipoyang 5:7f89fca19a9e 367 * @return the input value on this port.
lipoyang 5:7f89fca19a9e 368 */
lipoyang 5:7f89fca19a9e 369 static __INLINE uint8_t nrf_gpio_port_read(nrf_gpio_port_select_t port)
lipoyang 5:7f89fca19a9e 370 {
lipoyang 5:7f89fca19a9e 371 return nrf_gpio_word_byte_read(&NRF_GPIO->IN, port);
lipoyang 5:7f89fca19a9e 372 }
lipoyang 5:7f89fca19a9e 373
lipoyang 5:7f89fca19a9e 374 /**
lipoyang 5:7f89fca19a9e 375 * @brief Function for writing to a GPIO port.
lipoyang 5:7f89fca19a9e 376 *
lipoyang 5:7f89fca19a9e 377 * @param port is the port to write.
lipoyang 5:7f89fca19a9e 378 *
lipoyang 5:7f89fca19a9e 379 * @param value is the value to write to this port.
lipoyang 5:7f89fca19a9e 380 *
lipoyang 5:7f89fca19a9e 381 * @sa nrf_gpio_port_dir_set()
lipoyang 5:7f89fca19a9e 382 */
lipoyang 5:7f89fca19a9e 383 static __INLINE void nrf_gpio_port_write(nrf_gpio_port_select_t port, uint8_t value)
lipoyang 5:7f89fca19a9e 384 {
lipoyang 5:7f89fca19a9e 385 nrf_gpio_word_byte_write(&NRF_GPIO->OUT, port, value);
lipoyang 5:7f89fca19a9e 386 }
lipoyang 5:7f89fca19a9e 387
lipoyang 5:7f89fca19a9e 388 /**
lipoyang 5:7f89fca19a9e 389 * @brief Function for setting individual pins on GPIO port.
lipoyang 5:7f89fca19a9e 390 *
lipoyang 5:7f89fca19a9e 391 * @param port is the port for which to set the pins.
lipoyang 5:7f89fca19a9e 392 *
lipoyang 5:7f89fca19a9e 393 * @param set_mask is a mask specifying which pins to set. A bit
lipoyang 5:7f89fca19a9e 394 * set to 1 indicates that the corresponding port pin shall be
lipoyang 5:7f89fca19a9e 395 * set.
lipoyang 5:7f89fca19a9e 396 *
lipoyang 5:7f89fca19a9e 397 * @sa nrf_gpio_port_dir_set()
lipoyang 5:7f89fca19a9e 398 */
lipoyang 5:7f89fca19a9e 399 static __INLINE void nrf_gpio_port_set(nrf_gpio_port_select_t port, uint8_t set_mask)
lipoyang 5:7f89fca19a9e 400 {
lipoyang 5:7f89fca19a9e 401 nrf_gpio_word_byte_write(&NRF_GPIO->OUTSET, port, set_mask);
lipoyang 5:7f89fca19a9e 402 }
lipoyang 5:7f89fca19a9e 403
lipoyang 5:7f89fca19a9e 404 /**
lipoyang 5:7f89fca19a9e 405 * @brief Function for clearing individual pins on GPIO port.
lipoyang 5:7f89fca19a9e 406 *
lipoyang 5:7f89fca19a9e 407 * @param port is the port for which to clear the pins.
lipoyang 5:7f89fca19a9e 408 *
lipoyang 5:7f89fca19a9e 409 * @param clr_mask is a mask specifying which pins to clear. A bit
lipoyang 5:7f89fca19a9e 410 * set to 1 indicates that the corresponding port pin shall be
lipoyang 5:7f89fca19a9e 411 * cleared.
lipoyang 5:7f89fca19a9e 412 *
lipoyang 5:7f89fca19a9e 413 * @sa nrf_gpio_port_dir_set()
lipoyang 5:7f89fca19a9e 414 */
lipoyang 5:7f89fca19a9e 415 static __INLINE void nrf_gpio_port_clear(nrf_gpio_port_select_t port, uint8_t clr_mask)
lipoyang 5:7f89fca19a9e 416 {
lipoyang 5:7f89fca19a9e 417 nrf_gpio_word_byte_write(&NRF_GPIO->OUTCLR, port, clr_mask);
lipoyang 5:7f89fca19a9e 418 }
lipoyang 5:7f89fca19a9e 419
lipoyang 5:7f89fca19a9e 420 /** @} */
lipoyang 5:7f89fca19a9e 421
lipoyang 5:7f89fca19a9e 422 #endif