diff options
Diffstat (limited to 'os/hal/ports/NRF5/LLD/GPIOv1/hal_pal_lld.c')
| -rw-r--r-- | os/hal/ports/NRF5/LLD/GPIOv1/hal_pal_lld.c | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/os/hal/ports/NRF5/LLD/GPIOv1/hal_pal_lld.c b/os/hal/ports/NRF5/LLD/GPIOv1/hal_pal_lld.c new file mode 100644 index 0000000..3029367 --- /dev/null +++ b/os/hal/ports/NRF5/LLD/GPIOv1/hal_pal_lld.c @@ -0,0 +1,240 @@ +/*
+ Copyright (C) 2018 Konstantin Oblaukhov
+ Copyright (C) 2015 Fabio Utzig
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+/**
+ * @file GPIOv1/hal_pal_lld.c
+ * @brief NRF5 PAL subsystem low level driver source.
+ *
+ * @addtogroup PAL
+ * @{
+ */
+
+#include "osal.h"
+#include "hal.h"
+
+#if (HAL_USE_PAL == TRUE) || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/**
+ * @brief Event records for the GPIOTE channels.
+ */
+palevent_t _pal_events[NRF5_GPIOTE_NUM_CHANNELS];
+
+/*===========================================================================*/
+/* Driver local variables and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+void _pal_lld_setpadmode(ioportid_t port, uint8_t pad, iomode_t mode)
+{
+ (void)port;
+ osalDbgAssert(pad < PAL_IOPORTS_WIDTH, "pal_lld_setpadmode() - invalid pad");
+
+ switch (mode) {
+ case PAL_MODE_RESET:
+ case PAL_MODE_UNCONNECTED:
+ IOPORT1->PIN_CNF[pad] =
+ (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
+ (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
+ (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos) |
+ (GPIO_PIN_CNF_INPUT_Disconnect << GPIO_PIN_CNF_INPUT_Pos) |
+ (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
+ break;
+ case PAL_MODE_INPUT:
+ case PAL_MODE_INPUT_ANALOG:
+ IOPORT1->PIN_CNF[pad] =
+ (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
+ (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
+ (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos) |
+ (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) |
+ (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
+ break;
+ case PAL_MODE_INPUT_PULLUP:
+ IOPORT1->PIN_CNF[pad] =
+ (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
+ (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
+ (GPIO_PIN_CNF_PULL_Pullup << GPIO_PIN_CNF_PULL_Pos) |
+ (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) |
+ (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
+ break;
+ case PAL_MODE_INPUT_PULLDOWN:
+ IOPORT1->PIN_CNF[pad] =
+ (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
+ (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
+ (GPIO_PIN_CNF_PULL_Pulldown << GPIO_PIN_CNF_PULL_Pos) |
+ (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) |
+ (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos);
+ break;
+ case PAL_MODE_OUTPUT_PUSHPULL:
+ IOPORT1->PIN_CNF[pad] =
+ (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
+ (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) |
+ (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos) |
+ (GPIO_PIN_CNF_INPUT_Disconnect << GPIO_PIN_CNF_INPUT_Pos) |
+ (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
+ break;
+ case PAL_MODE_OUTPUT_OPENDRAIN:
+ IOPORT1->PIN_CNF[pad] =
+ (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) |
+ (GPIO_PIN_CNF_DRIVE_S0D1 << GPIO_PIN_CNF_DRIVE_Pos) |
+ (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos) |
+ (GPIO_PIN_CNF_INPUT_Disconnect << GPIO_PIN_CNF_INPUT_Pos) |
+ (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos);
+ break;
+ default:
+ osalDbgAssert(FALSE, "invalid pal mode");
+ break;
+ }
+}
+
+/*===========================================================================*/
+/* Driver interrupt handlers. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief NRF5 I/O ports configuration.
+ *
+ * @param[in] config the NRF5 ports configuration
+ *
+ * @notapi
+ */
+void _pal_lld_init(const PALConfig *config)
+{
+ uint8_t i;
+
+ for (i = 0; i < TOTAL_GPIO_PADS; i++) {
+ pal_lld_setpadmode(IOPORT1, i, config->pads[i]);
+ }
+
+#if PAL_USE_CALLBACKS || PAL_USE_WAIT || defined(__DOXYGEN__)
+ for (i = 0; i < NRF5_GPIOTE_NUM_CHANNELS; i++) {
+ _pal_init_event(i);
+ }
+#endif
+}
+
+/**
+ * @brief Pads mode setup.
+ * @details This function programs a pads group belonging to the same port
+ * with the specified mode.
+ *
+ * @param[in] port the port identifier
+ * @param[in] mask the group mask
+ * @param[in] mode the mode
+ *
+ * @notapi
+ */
+void _pal_lld_setgroupmode(ioportid_t port,
+ ioportmask_t mask,
+ iomode_t mode)
+{
+ uint8_t i;
+
+ for (i = 0; i < TOTAL_GPIO_PADS; i++, mask >>= 1) {
+ if (mask & 1) {
+ pal_lld_setpadmode(port, i, mode);
+ }
+ }
+}
+
+#if PAL_USE_CALLBACKS || PAL_USE_WAIT || defined(__DOXYGEN__)
+/**
+ * @brief Pad event enable.
+ * @note Programming an unknown or unsupported mode is silently ignored.
+ *
+ * @param[in] port port identifier
+ * @param[in] pad pad number within the port
+ * @param[in] mode pad event mode
+ *
+ * @notapi
+ */
+void _pal_lld_enablepadevent(ioportid_t port,
+ iopadid_t pad,
+ ioeventmode_t mode) {
+ (void)port;
+
+ int ch = NRF5_PAL_PAD_TO_EVENT(pad);
+ uint32_t config = NRF_GPIOTE->CONFIG[ch];
+
+ osalDbgAssert((((config & GPIOTE_CONFIG_PSEL_Msk) >> GPIOTE_CONFIG_PSEL_Pos) == pad) ||
+ (((config & GPIOTE_CONFIG_MODE_Msk) >> GPIOTE_CONFIG_MODE_Pos) != GPIOTE_CONFIG_MODE_Event),
+ "channel already in use");
+
+ if ((mode & PAL_EVENT_MODE_RISING_EDGE) && (mode & PAL_EVENT_MODE_FALLING_EDGE))
+ config |= (GPIOTE_CONFIG_POLARITY_Toggle << GPIOTE_CONFIG_POLARITY_Pos);
+ else if (mode & PAL_EVENT_MODE_RISING_EDGE)
+ config |= (GPIOTE_CONFIG_POLARITY_LoToHi << GPIOTE_CONFIG_POLARITY_Pos);
+ else
+ config |= (GPIOTE_CONFIG_POLARITY_HiToLo << GPIOTE_CONFIG_POLARITY_Pos);
+
+ config |= (pad << GPIOTE_CONFIG_PSEL_Pos);
+
+ config |= (GPIOTE_CONFIG_MODE_Event << GPIOTE_CONFIG_MODE_Pos);
+
+ NRF_GPIOTE->CONFIG[ch] = config;
+ NRF_GPIOTE->EVENTS_PORT = 0;
+ NRF_GPIOTE->EVENTS_IN[ch] = 0;
+ NRF_GPIOTE->INTENSET = (1 << ch);
+}
+
+/**
+ * @brief Pad event disable.
+ * @details This function disables previously programmed event callbacks.
+ *
+ * @param[in] port port identifier
+ * @param[in] pad pad number within the port
+ *
+ * @notapi
+ */
+void _pal_lld_disablepadevent(ioportid_t port, iopadid_t pad) {
+ (void)port;
+ int ch = NRF5_PAL_PAD_TO_EVENT(pad);
+ uint32_t config = NRF_GPIOTE->CONFIG[ch];
+
+ if (((config & GPIOTE_CONFIG_MODE_Msk) >> GPIOTE_CONFIG_MODE_Pos) == GPIOTE_CONFIG_MODE_Event)
+ {
+ osalDbgAssert(((config & GPIOTE_CONFIG_PSEL_Msk) >> GPIOTE_CONFIG_PSEL_Pos) == pad,
+ "channel mapped on different pad");
+
+ NRF_GPIOTE->INTENSET &= ~(1 << ch);
+ NRF_GPIOTE->CONFIG[ch] = 0;
+
+#if PAL_USE_CALLBACKS || PAL_USE_WAIT
+ /* Callback cleared and/or thread reset.*/
+ _pal_clear_event(pad);
+#endif
+ }
+}
+#endif /* PAL_USE_CALLBACKS || PAL_USE_WAIT */
+
+#endif /* HAL_USE_PAL == TRUE */
+
+/** @} */
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