aboutsummaryrefslogtreecommitdiffstats
path: root/drivers_nrf/sdio
diff options
context:
space:
mode:
Diffstat (limited to 'drivers_nrf/sdio')
-rw-r--r--drivers_nrf/sdio/config/sdio_config.h55
-rw-r--r--drivers_nrf/sdio/sdio.c244
-rw-r--r--drivers_nrf/sdio/sdio.h105
3 files changed, 404 insertions, 0 deletions
diff --git a/drivers_nrf/sdio/config/sdio_config.h b/drivers_nrf/sdio/config/sdio_config.h
new file mode 100644
index 0000000..f59e553
--- /dev/null
+++ b/drivers_nrf/sdio/config/sdio_config.h
@@ -0,0 +1,55 @@
+/**
+ * Copyright (c) 2012 - 2017, Nordic Semiconductor ASA
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form, except as embedded into a Nordic
+ * Semiconductor ASA integrated circuit in a product or a software update for
+ * such product, must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other
+ * materials provided with the distribution.
+ *
+ * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * 4. This software, with or without modification, must only be used with a
+ * Nordic Semiconductor ASA integrated circuit.
+ *
+ * 5. Any software provided in binary form under this license must not be reverse
+ * engineered, decompiled, modified and/or disassembled.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef SDIO_CONFIG_H
+#define SDIO_CONFIG_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define SDIO_CONFIG_CLOCK_PIN_NUMBER 24
+#define SDIO_CONFIG_DATA_PIN_NUMBER 25
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/drivers_nrf/sdio/sdio.c b/drivers_nrf/sdio/sdio.c
new file mode 100644
index 0000000..381c77d
--- /dev/null
+++ b/drivers_nrf/sdio/sdio.c
@@ -0,0 +1,244 @@
+/**
+ * Copyright (c) 2009 - 2017, Nordic Semiconductor ASA
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form, except as embedded into a Nordic
+ * Semiconductor ASA integrated circuit in a product or a software update for
+ * such product, must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other
+ * materials provided with the distribution.
+ *
+ * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * 4. This software, with or without modification, must only be used with a
+ * Nordic Semiconductor ASA integrated circuit.
+ *
+ * 5. Any software provided in binary form under this license must not be reverse
+ * engineered, decompiled, modified and/or disassembled.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#include <stdint.h>
+
+#include "nrf.h"
+#include "nrf_delay.h"
+#include "sdio.h"
+#include "nrf_gpio.h"
+
+#include "sdio_config.h"
+
+/*lint ++flb "Enter library region" */
+
+/*lint -e717 -save "Suppress do {} while (0) for these macros" */
+#define SDIO_CLOCK_HIGH() do { NRF_GPIO->OUTSET = (1UL << SDIO_CONFIG_CLOCK_PIN_NUMBER); } while (0) /*!< Pulls SCL line high */
+#define SDIO_CLOCK_LOW() do { NRF_GPIO->OUTCLR = (1UL << SDIO_CONFIG_CLOCK_PIN_NUMBER); } while (0) /*!< Pulls SCL line low */
+#define SDIO_DATA_HIGH() do { NRF_GPIO->OUTSET = (1UL << SDIO_CONFIG_DATA_PIN_NUMBER); } while (0) /*!< Pulls SDA line high */
+#define SDIO_DATA_LOW() do { NRF_GPIO->OUTCLR = (1UL << SDIO_CONFIG_DATA_PIN_NUMBER); } while (0) /*!< Pulls SDA line low */
+#define SDIO_DATA_OUTPUT() do { NRF_GPIO->DIRSET = (1UL << SDIO_CONFIG_DATA_PIN_NUMBER); } while (0) /*!< Configures SDA pin as output */
+#define SDIO_CLOCK_OUTPUT() do { NRF_GPIO->DIRSET = (1UL << SDIO_CONFIG_CLOCK_PIN_NUMBER); } while (0) /*!< Configures SCL pin as output */
+/*lint -restore */
+
+/*lint -emacro(845,SDIO_DATA_INPUT) // A zero has been given as right argument to operator '|'" */
+
+#define SDIO_DATA_INPUT() do { \
+ nrf_gpio_cfg_input(25, NRF_GPIO_PIN_NOPULL); \
+} while (0)
+
+#define SDIO_DATA_READ() ((NRF_GPIO->IN >> SDIO_CONFIG_DATA_PIN_NUMBER) & 0x1UL) /*!< Reads current state of SDA */
+#define SDIO_CLOCK_READ() ((NRF_GPIO->IN >> SDIO_CONFIG_CLOCK_PIN_NUMBER) & 0x1UL) /*!< Reads current state of SCL */
+#define SDIO_DELAY() nrf_delay_us(10) /*!< Time to wait when pin states are changed. For fast-mode the delay can be zero and for standard-mode 4 us delay is sufficient. */
+
+void sdio_init(void)
+{
+ SDIO_CLOCK_HIGH();
+ SDIO_DATA_HIGH();
+ SDIO_CLOCK_OUTPUT();
+ SDIO_DATA_INPUT();
+
+ // If slave is stuck in the middle of transfer, clock out bits until the slave ACKs the transfer
+ for (uint_fast8_t i = 16; i--;)
+ {
+ SDIO_DELAY();
+ SDIO_CLOCK_LOW();
+ SDIO_DELAY();
+ SDIO_CLOCK_HIGH();
+ SDIO_DELAY();
+
+ if (SDIO_DATA_READ())
+ {
+ break;
+ }
+ }
+
+ for (uint_fast8_t i = 5; i--;)
+ {
+ SDIO_DELAY();
+ SDIO_CLOCK_LOW();
+ SDIO_DELAY();
+ SDIO_CLOCK_HIGH();
+ }
+
+ SDIO_DATA_OUTPUT();
+ SDIO_DATA_HIGH();
+
+ SDIO_DELAY();
+}
+
+uint8_t sdio_read_byte(uint8_t address)
+{
+ uint8_t data_byte = 0;
+
+ SDIO_DATA_OUTPUT();
+
+ for (uint_fast8_t i = 8; i--;)
+ {
+ SDIO_DELAY();
+
+ SDIO_CLOCK_LOW();
+
+ if (address & (1U << i))
+ {
+ SDIO_DATA_HIGH();
+ }
+ else
+ {
+ SDIO_DATA_LOW();
+ }
+
+ SDIO_DELAY();
+
+ SDIO_CLOCK_HIGH();
+ }
+
+ nrf_delay_us(20);
+
+ SDIO_DATA_INPUT();
+
+ for (uint_fast8_t i = 8; i--;)
+ {
+ SDIO_CLOCK_LOW();
+ SDIO_DELAY();
+ SDIO_CLOCK_HIGH();
+ SDIO_DELAY();
+ data_byte |= (uint8_t)(SDIO_DATA_READ() << i);
+ }
+
+ SDIO_DATA_HIGH();
+ SDIO_DATA_OUTPUT();
+
+ SDIO_DELAY();
+
+ return data_byte;
+}
+
+void sdio_read_burst(uint8_t * target_buffer, uint8_t target_buffer_size)
+{
+ uint_fast8_t address = 0x63;
+
+ SDIO_DATA_OUTPUT();
+
+ for (uint_fast8_t bit_index=8; bit_index--;)
+ {
+ SDIO_CLOCK_LOW();
+
+ if (address & (1U << bit_index))
+ {
+ SDIO_DATA_HIGH();
+ }
+ else
+ {
+ SDIO_DATA_LOW();
+ }
+
+ SDIO_CLOCK_HIGH();
+ }
+
+ SDIO_DATA_INPUT();
+
+ for (uint_fast8_t target_buffer_index = 0; target_buffer_index < target_buffer_size; target_buffer_index++)
+ {
+ target_buffer[target_buffer_index] = 0;
+
+ for (uint_fast8_t bit_index = 8; bit_index--;)
+ {
+ SDIO_CLOCK_LOW();
+ SDIO_CLOCK_HIGH();
+ target_buffer[target_buffer_index] |= (uint8_t)(SDIO_DATA_READ() << bit_index);
+ }
+ }
+}
+
+void sdio_write_byte(uint8_t address, uint8_t data_byte)
+{
+ // Add write indication bit
+ address |= 0x80;
+
+ SDIO_DATA_OUTPUT();
+
+ for (uint_fast8_t i = 8; i--;)
+ {
+ SDIO_DELAY();
+
+ SDIO_CLOCK_LOW();
+
+ if (address & (1U << i))
+ {
+ SDIO_DATA_HIGH();
+ }
+ else
+ {
+ SDIO_DATA_LOW();
+ }
+
+ SDIO_DELAY();
+
+ SDIO_CLOCK_HIGH();
+ }
+
+ SDIO_DELAY();
+
+ for (uint_fast8_t i = 8; i--;)
+ {
+ SDIO_CLOCK_LOW();
+
+ if (data_byte & (1U << i))
+ {
+ SDIO_DATA_HIGH();
+ }
+ else
+ {
+ SDIO_DATA_LOW();
+ }
+
+ SDIO_DELAY();
+
+ SDIO_CLOCK_HIGH();
+
+ SDIO_DELAY();
+ }
+
+ SDIO_DATA_HIGH();
+
+ SDIO_DELAY();
+}
+
+/*lint --flb "Leave library region" */
diff --git a/drivers_nrf/sdio/sdio.h b/drivers_nrf/sdio/sdio.h
new file mode 100644
index 0000000..e52e7e9
--- /dev/null
+++ b/drivers_nrf/sdio/sdio.h
@@ -0,0 +1,105 @@
+/**
+ * Copyright (c) 2009 - 2017, Nordic Semiconductor ASA
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form, except as embedded into a Nordic
+ * Semiconductor ASA integrated circuit in a product or a software update for
+ * such product, must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other
+ * materials provided with the distribution.
+ *
+ * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * 4. This software, with or without modification, must only be used with a
+ * Nordic Semiconductor ASA integrated circuit.
+ *
+ * 5. Any software provided in binary form under this license must not be reverse
+ * engineered, decompiled, modified and/or disassembled.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef SDIO_H
+#define SDIO_H
+
+/*lint ++flb "Enter library region" */
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @file
+* @brief 2-wire serial interface driver (compatible with ADNS2080 mouse sensor driver)
+*
+*
+* @defgroup nrf_drivers_sdio SDIO driver
+* @{
+* @ingroup nrf_drivers
+* @brief 2-wire serial interface driver.
+*/
+
+/**
+ * @brief Function for initializing 2-wire serial interface and trying to handle stuck slaves.
+ *
+ */
+void sdio_init(void);
+
+/**
+ * @brief Function for reading a byte over 2-wire serial interface.
+ *
+ * Developer needs to implement this function in a way that suits the hardware.
+ * @param address Register address to read from
+ * @return Byte read
+ */
+uint8_t sdio_read_byte(uint8_t address);
+
+/**
+ * @brief Function for reading several bytes over 2-wire serial interface using burst mode.
+ *
+ * Developer needs to implement this function in a way that suits the hardware.
+ * @param target_buffer Buffer location to store read bytes to
+ * @param target_buffer_size Bytes allocated for target_buffer
+ */
+void sdio_read_burst(uint8_t *target_buffer, uint8_t target_buffer_size);
+
+/**
+ * @brief Function for writing a byte over 2-wire serial interface.
+ *
+ * Developer needs to implement this function in a way that suits the hardware.
+ * @param address Register address to write to
+ * @param data_byte Data byte to write
+ */
+void sdio_write_byte(uint8_t address, uint8_t data_byte);
+
+/**
+ *@}
+ **/
+
+/*lint --flb "Leave library region" */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-07 11:02:07 +0000