Gan likun
00
Diff: targets/TARGET_STM/pinmap.c
- Revision:
- 0:13413ea9a877
diff -r 000000000000 -r 13413ea9a877 targets/TARGET_STM/pinmap.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_STM/pinmap.c Sun Jun 12 14:02:44 2022 +0000
@@ -0,0 +1,161 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2017, STMicroelectronics
+ * 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 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 STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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 "mbed_assert.h"
+#include "pinmap.h"
+#include "PortNames.h"
+#include "mbed_error.h"
+#include "pin_device.h"
+
+extern GPIO_TypeDef *Set_GPIO_Clock(uint32_t port_idx);
+
+const uint32_t ll_pin_defines[16] = {
+ LL_GPIO_PIN_0,
+ LL_GPIO_PIN_1,
+ LL_GPIO_PIN_2,
+ LL_GPIO_PIN_3,
+ LL_GPIO_PIN_4,
+ LL_GPIO_PIN_5,
+ LL_GPIO_PIN_6,
+ LL_GPIO_PIN_7,
+ LL_GPIO_PIN_8,
+ LL_GPIO_PIN_9,
+ LL_GPIO_PIN_10,
+ LL_GPIO_PIN_11,
+ LL_GPIO_PIN_12,
+ LL_GPIO_PIN_13,
+ LL_GPIO_PIN_14,
+ LL_GPIO_PIN_15
+};
+
+/**
+ * Configure pin (mode, speed, output type and pull-up/pull-down)
+ */
+void pin_function(PinName pin, int data)
+{
+ MBED_ASSERT(pin != (PinName)NC);
+
+ // Get the pin informations
+ uint32_t mode = STM_PIN_FUNCTION(data);
+ uint32_t afnum = STM_PIN_AFNUM(data);
+ uint32_t port = STM_PORT(pin);
+ uint32_t ll_pin = ll_pin_defines[STM_PIN(pin)];
+ uint32_t ll_mode = 0;
+
+ // Enable GPIO clock
+ GPIO_TypeDef *gpio = Set_GPIO_Clock(port);
+
+ /* Set default speed to high.
+ * For most families there are dedicated registers so it is
+ * not so important, register can be set at any time.
+ * But for families like F1, speed only applies to output.
+ */
+#if defined (TARGET_STM32F1)
+if (mode == STM_PIN_OUTPUT) {
+#endif
+ LL_GPIO_SetPinSpeed(gpio, ll_pin, LL_GPIO_SPEED_FREQ_HIGH);
+#if defined (TARGET_STM32F1)
+}
+#endif
+
+ switch (mode) {
+ case STM_PIN_INPUT:
+ ll_mode = LL_GPIO_MODE_INPUT;
+ break;
+ case STM_PIN_OUTPUT:
+ ll_mode = LL_GPIO_MODE_OUTPUT;
+ break;
+ case STM_PIN_ALTERNATE:
+ ll_mode = LL_GPIO_MODE_ALTERNATE;
+ // In case of ALT function, also set he afnum
+ stm_pin_SetAFPin(gpio, pin, afnum);
+ break;
+ case STM_PIN_ANALOG:
+ ll_mode = LL_GPIO_MODE_ANALOG;
+ break;
+ default:
+ MBED_ASSERT(0);
+ break;
+ }
+ LL_GPIO_SetPinMode(gpio, ll_pin, ll_mode);
+
+#if defined(GPIO_ASCR_ASC0)
+ /* For families where Analog Control ASC0 register is present */
+ if (STM_PIN_ANALOG_CONTROL(data)) {
+ LL_GPIO_EnablePinAnalogControl(gpio, ll_pin);
+ } else {
+ LL_GPIO_DisablePinAnalogControl(gpio, ll_pin);
+ }
+#endif
+
+ /* For now by default use Speed HIGH for output or alt modes */
+ if ((mode == STM_PIN_OUTPUT) ||(mode == STM_PIN_ALTERNATE)) {
+ if (STM_PIN_OD(data)) {
+ LL_GPIO_SetPinOutputType(gpio, ll_pin, LL_GPIO_OUTPUT_OPENDRAIN);
+ } else {
+ LL_GPIO_SetPinOutputType(gpio, ll_pin, LL_GPIO_OUTPUT_PUSHPULL);
+ }
+ }
+
+ stm_pin_PullConfig(gpio, ll_pin, STM_PIN_PUPD(data));
+
+ stm_pin_DisconnectDebug(pin);
+}
+
+/**
+ * Configure pin pull-up/pull-down
+ */
+void pin_mode(PinName pin, PinMode mode)
+{
+ MBED_ASSERT(pin != (PinName)NC);
+
+ uint32_t port_index = STM_PORT(pin);
+ uint32_t ll_pin = ll_pin_defines[STM_PIN(pin)];
+ // Enable GPIO clock
+ GPIO_TypeDef *gpio = Set_GPIO_Clock(port_index);
+ uint32_t function = LL_GPIO_GetPinMode(gpio, ll_pin);
+
+ if ((function == LL_GPIO_MODE_OUTPUT) || (function == LL_GPIO_MODE_ALTERNATE))
+ {
+ if ((mode == OpenDrainNoPull) || (mode == OpenDrainPullUp) || (mode == OpenDrainPullDown)) {
+ LL_GPIO_SetPinOutputType(gpio, ll_pin, LL_GPIO_OUTPUT_OPENDRAIN);
+ } else {
+ LL_GPIO_SetPinOutputType(gpio, ll_pin, LL_GPIO_OUTPUT_PUSHPULL);
+ }
+ }
+
+ if ((mode == OpenDrainPullUp) || (mode == PullUp)) {
+ stm_pin_PullConfig(gpio, ll_pin, GPIO_PULLUP);
+ } else if ((mode == OpenDrainPullDown) || (mode == PullDown)) {
+ stm_pin_PullConfig(gpio, ll_pin, GPIO_PULLDOWN);
+ } else {
+ stm_pin_PullConfig(gpio, ll_pin, GPIO_NOPULL);
+ }
+}
+