Merge pull request #8723 from schugabe/pin_up_down_config

Add resource option to configure unused pins as pulldown

make/source.mk

@@ -31,6 +31,7 @@ COMMON_SRC = \
             drivers/mco.c \
             drivers/motor.c \
             drivers/pinio.c \
+            drivers/pin_pull_up_down.c \
             drivers/resource.c \
             drivers/rcc.c \
             drivers/serial.c \

src/main/cli/cli.c

@@ -137,6 +137,7 @@ bool cliMode = false;
 #include "pg/mco.h"
 #include "pg/motor.h"
 #include "pg/pinio.h"
+#include "pg/pin_pull_up_down.h"
 #include "pg/pg.h"
 #include "pg/pg_ids.h"
 #include "pg/rx.h"
@@ -4913,6 +4914,10 @@ const cliResourceValue_t resourceTable[] = {
     DEFS( OWNER_VTX_DATA,      PG_VTX_IO_CONFIG, vtxIOConfig_t, dataTag ),
     DEFS( OWNER_VTX_CLK,       PG_VTX_IO_CONFIG, vtxIOConfig_t, clockTag ),
 #endif
+#ifdef USE_PIN_PULL_UP_DOWN
+    DEFA( OWNER_PULLUP,        PG_PULLUP_CONFIG,   pinPullUpDownConfig_t, ioTag, PIN_PULL_UP_DOWN_COUNT ),
+    DEFA( OWNER_PULLDOWN,      PG_PULLDOWN_CONFIG, pinPullUpDownConfig_t, ioTag, PIN_PULL_UP_DOWN_COUNT ),
+#endif
 };
 
 #undef DEFS

src/main/drivers/pin_pull_up_down.c

@@ -0,0 +1,57 @@
+/*
+ * This file is part of Betaflight.
+ *
+ * Cleanflight and Betaflight are free software. You can redistribute
+ * this software and/or modify this software under the terms of the
+ * GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option)
+ * any later version.
+ *
+ * Cleanflight and Betaflight are distributed in the hope that they
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software.
+ *
+ * If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdint.h>
+
+#include "platform.h"
+
+#ifdef USE_PIN_PULL_UP_DOWN
+
+#include "build/debug.h"
+#include "drivers/io.h"
+#include "pg/pin_pull_up_down.h"
+#include "pin_pull_up_down.h"
+
+
+static void initPin(const pinPullUpDownConfig_t* config, resourceOwner_e owner, uint8_t index)
+{
+    IO_t io = IOGetByTag(config->ioTag);
+    if (!io) {
+        return;
+    }
+
+    IOInit(io, owner, RESOURCE_INDEX(index));
+
+    if (owner == OWNER_PULLUP) {
+        IOConfigGPIO(io, IOCFG_IPU);
+    } else if (owner == OWNER_PULLDOWN) {
+        IOConfigGPIO(io, IOCFG_IPD);
+    }
+}
+
+void pinPullupPulldownInit()
+{
+    for (uint8_t i = 0; i < PIN_PULL_UP_DOWN_COUNT; i++) {
+        initPin(pinPullupConfig(i), OWNER_PULLUP, i);
+        initPin(pinPulldownConfig(i), OWNER_PULLDOWN, i);
+    }
+}
+
+#endif

src/main/drivers/pin_pull_up_down.h

@@ -0,0 +1,31 @@
+/*
+ * This file is part of Betaflight.
+ *
+ * Cleanflight and Betaflight are free software. You can redistribute
+ * this software and/or modify this software under the terms of the
+ * GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option)
+ * any later version.
+ *
+ * Cleanflight and Betaflight are distributed in the hope that they
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software.
+ *
+ * If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <stdbool.h>
+
+#ifndef PIN_PULL_UP_DOWN_COUNT
+#define PIN_PULL_UP_DOWN_COUNT 4
+#endif
+
+struct pinPullUpDownConfig_s;
+
+void pinPullupPulldownInit();

src/main/drivers/resource.c

@@ -105,4 +105,6 @@ const char * const ownerNames[OWNER_TOTAL_COUNT] = {
     "QSPI_BK2IO3",
     "QSPI_BK2CS",
     "BARO_XCLR",
+    "PULLUP",
+    "PULLDOWN"
 };

src/main/drivers/resource.h

@@ -103,6 +103,8 @@ typedef enum {
     OWNER_QUADSPI_BK2IO3,
     OWNER_QUADSPI_BK2CS,
     OWNER_BARO_XCLR,
+    OWNER_PULLUP,
+    OWNER_PULLDOWN,
     OWNER_TOTAL_COUNT
 } resourceOwner_e;
 

src/main/fc/init.c

@@ -59,6 +59,7 @@
 #include "drivers/mco.h"
 #include "drivers/nvic.h"
 #include "drivers/persistent.h"
+#include "drivers/pin_pull_up_down.h"
 #include "drivers/pwm_esc_detect.h"
 #include "drivers/pwm_output.h"
 #include "drivers/rx/rx_pwm.h"
@@ -140,6 +141,7 @@
 #include "pg/motor.h"
 #include "pg/pinio.h"
 #include "pg/piniobox.h"
+#include "pg/pin_pull_up_down.h"
 #include "pg/pg.h"
 #include "pg/rx.h"
 #include "pg/rx_spi.h"
@@ -694,6 +696,10 @@ void init(void)
     pinioInit(pinioConfig());
 #endif
 
+#ifdef USE_PIN_PULL_UP_DOWN
+    pinPullupPulldownInit();
+#endif
+
 #ifdef USE_PINIOBOX
     pinioBoxInit(pinioBoxConfig());
 #endif

src/main/pg/pg_ids.h

@@ -147,7 +147,9 @@
 #define PG_QUADSPI_CONFIG 548
 #define PG_TIMER_UP_CONFIG 549 // used to store dmaopt for TIMx_UP channel
 #define PG_SDIO_PIN_CONFIG 550
-#define PG_BETAFLIGHT_END 550
+#define PG_PULLUP_CONFIG 551
+#define PG_PULLDOWN_CONFIG 552
+#define PG_BETAFLIGHT_END 552
 
 
 // OSD configuration (subject to change)

src/main/pg/pin_pull_up_down.c

@@ -0,0 +1,49 @@
+/*
+ * This file is part of Betaflight.
+ *
+ * Cleanflight and Betaflight are free software. You can redistribute
+ * this software and/or modify this software under the terms of the
+ * GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option)
+ * any later version.
+ *
+ * Cleanflight and Betaflight are distributed in the hope that they
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software.
+ *
+ * If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "platform.h"
+
+#ifdef USE_PIN_PULL_UP_DOWN
+
+#include "drivers/io.h"
+#include "pg/pg_ids.h"
+#include "pin_pull_up_down.h"
+
+static void resetPullUpDownConfig(pinPullUpDownConfig_t* config)
+{
+    for (uint8_t i = 0; i < PIN_PULL_UP_DOWN_COUNT; i++) {
+        config[i].ioTag = IO_TAG(NONE);
+    }
+}
+
+PG_REGISTER_ARRAY_WITH_RESET_FN(pinPullUpDownConfig_t, PIN_PULL_UP_DOWN_COUNT, pinPullupConfig, PG_PULLUP_CONFIG, 0);
+
+void pgResetFn_pinPullupConfig(pinPullUpDownConfig_t *config)
+{
+    resetPullUpDownConfig(config);
+}
+
+PG_REGISTER_ARRAY_WITH_RESET_FN(pinPullUpDownConfig_t, PIN_PULL_UP_DOWN_COUNT, pinPulldownConfig, PG_PULLDOWN_CONFIG, 0);
+
+void pgResetFn_pinPulldownConfig(pinPullUpDownConfig_t *config)
+{
+    resetPullUpDownConfig(config);
+}
+#endif

src/main/pg/pin_pull_up_down.h

@@ -0,0 +1,32 @@
+/*
+ * This file is part of Betaflight.
+ *
+ * Cleanflight and Betaflight are free software. You can redistribute
+ * this software and/or modify this software under the terms of the
+ * GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option)
+ * any later version.
+ *
+ * Cleanflight and Betaflight are distributed in the hope that they
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software.
+ *
+ * If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "drivers/io_types.h"
+#include "drivers/pin_pull_up_down.h"
+#include "pg/pg.h"
+
+typedef struct pinPullUpDownConfig_s {
+    ioTag_t ioTag;
+} pinPullUpDownConfig_t;
+
+PG_DECLARE_ARRAY(pinPullUpDownConfig_t, PIN_PULL_UP_DOWN_COUNT, pinPullupConfig);
+PG_DECLARE_ARRAY(pinPullUpDownConfig_t, PIN_PULL_UP_DOWN_COUNT, pinPulldownConfig);

src/main/target/common_pre.h

@@ -280,6 +280,7 @@
 #define USE_SPEKTRUM_VTX_CONTROL
 #define USE_SPEKTRUM_VTX_TELEMETRY
 #define USE_SPEKTRUM_CMS_TELEMETRY
+#define USE_PIN_PULL_UP_DOWN
 #endif
 #endif