Update to incorporate hardware revision detection for BJF4 target

src/main/drivers/flash_m25p16.c

@@ -196,12 +196,26 @@ static bool m25p16_readIdentification()
  * Attempts to detect a connected m25p16. If found, true is returned and device capacity can be fetched with
  * m25p16_getGeometry().
  */
-bool m25p16_init()
+bool m25p16_init(ioTag_t csTag)
 {
-
+    /* 
+        if we have already detected a flash device we can simply exit 
+        
+        TODO: change the init param in favour of flash CFG when ParamGroups work is done
+        then cs pin can be specified in hardware_revision.c or config.c (dependent on revision).
+    */
+    if (geometry.sectors) {
+        return true;
+    }
+    
+    if (csTag) {
+        m25p16CsPin = IOGetByTag(csTag);
+    } else {
 #ifdef M25P16_CS_PIN
-    m25p16CsPin = IOGetByTag(IO_TAG(M25P16_CS_PIN));
+        m25p16CsPin = IOGetByTag(IO_TAG(M25P16_CS_PIN));
+#else
        return false;
 #endif
+    }
     IOInit(m25p16CsPin, OWNER_FLASH, RESOURCE_SPI_CS, 0);
     IOConfigGPIO(m25p16CsPin, SPI_IO_CS_CFG);
 

src/main/drivers/flash_m25p16.h

@@ -19,10 +19,11 @@
 
 #include <stdint.h>
 #include "flash.h"
+#include "io.h"
 
 #define M25P16_PAGESIZE 256
 
-bool m25p16_init();
+bool m25p16_init(ioTag_t csTag);
 
 void m25p16_eraseSector(uint32_t address);
 void m25p16_eraseCompletely();

src/main/drivers/io.h

@@ -11,6 +11,9 @@
 typedef uint8_t ioTag_t;       // packet tag to specify IO pin
 typedef void* IO_t;            // type specifying IO pin. Currently ioRec_t pointer, but this may change
 
+// NONE initializer for ioTag_t variables
+#define IOTAG_NONE ((ioTag_t)0)
+
 // NONE initializer for IO_t variable
 #define IO_NONE ((IO_t)0)
 

src/main/main.c

@@ -179,8 +179,7 @@ void init(void)
 #ifdef ALIENFLIGHTF3
     if (hardwareRevision == AFF3_REV_1) {
         ledInit(false);
-    }
-    else {
+    } else {
         ledInit(true);
     }
 #else
@@ -581,10 +580,10 @@ void init(void)
 #ifdef USE_FLASHFS
 #ifdef NAZE
     if (hardwareRevision == NAZE32_REV5) {
-        m25p16_init();
+        m25p16_init(IOTAG_NONE);
     }
 #elif defined(USE_FLASH_M25P16)
-    m25p16_init();
+    m25p16_init(IOTAG_NONE);
 #endif
 
     flashfsInit();
@@ -599,7 +598,11 @@ void init(void)
 
 #if defined(LED_STRIP) && defined(WS2811_DMA_CHANNEL)
     // Ensure the SPI Tx DMA doesn't overlap with the led strip
+#ifdef STM32F4
+    sdcardUseDMA = !feature(FEATURE_LED_STRIP) || SDCARD_DMA_CHANNEL_TX != WS2811_DMA_STREAM;
+#else
     sdcardUseDMA = !feature(FEATURE_LED_STRIP) || SDCARD_DMA_CHANNEL_TX != WS2811_DMA_CHANNEL;
+#endif
 #else
     sdcardUseDMA = true;
 #endif

src/main/target/BLUEJAYF4/hardware_revision.c

@@ -0,0 +1,86 @@
+/*
+ * This file is part of Cleanflight.
+ *
+ * Cleanflight is free software: you can redistribute it and/or modify
+ * it 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 is distributed in the hope that it 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 Cleanflight.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "platform.h"
+#include "build_config.h"
+
+#include "drivers/system.h"
+#include "drivers/bus_spi.h"
+#include "drivers/io.h"
+#include "drivers/flash_m25p16.h"
+#include "hardware_revision.h"
+
+static const char * const hardwareRevisionNames[] = {
+    "Unknown",
+    "BlueJay rev1",
+    "BlueJay rev2",
+    "BlueJay rev3",
+    "BlueJay rev3a"
+};
+
+uint8_t hardwareRevision = UNKNOWN;
+
+void detectHardwareRevision(void)
+{
+    IO_t pin1 = IOGetByTag(IO_TAG(PB12));
+    IOInit(pin1, OWNER_SYSTEM, RESOURCE_INPUT, 1);
+    IOConfigGPIO(pin1, IOCFG_IPU);
+
+    IO_t pin2 = IOGetByTag(IO_TAG(PB13));
+    IOInit(pin2, OWNER_SYSTEM, RESOURCE_INPUT, 2);
+    IOConfigGPIO(pin2, IOCFG_IPU);
+
+    // Check hardware revision
+    delayMicroseconds(10);  // allow configuration to settle
+
+    /* 
+        if both PB12 and 13 are tied to GND then it is Rev3A (mini)
+        if only PB12 is tied to GND then it is a Rev3 (full size) 
+    */
+    if (!IORead(pin1)) {
+        if (!IORead(pin2)) {
+            hardwareRevision = BJF4_REV3A;
+            return;
+        }
+        hardwareRevision = BJF4_REV3;
+        return;
+    }
+
+    hardwareRevision = BJF4_REV2;    
+}
+
+void updateHardwareRevision(void)
+{
+    if (hardwareRevision != BJF4_REV2) {
+        return;
+    }
+    
+    /* 
+        if flash exists on PB3 then Rev1
+    */
+    if (m25p16_init(IO_TAG(PB3))) {
+        hardwareRevision = BJF4_REV1;
+    } else {
+        IOInit(IOGetByTag(IO_TAG(PB3)), OWNER_FREE, RESOURCE_NONE, 0);
+    }
+}
+
+

src/main/target/BLUEJAYF4/hardware_revision.h

@@ -0,0 +1,30 @@
+/*
+ * This file is part of Cleanflight.
+ *
+ * Cleanflight is free software: you can redistribute it and/or modify
+ * it 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 is distributed in the hope that it 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 Cleanflight.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+typedef enum bjf4HardwareRevision_t {
+    UNKNOWN = 0,
+    BJF4_REV1,  // Flash
+    BJF4_REV2,  // SDCard
+    BJF4_REV3,  // SDCard + Flash
+    BJF4_REV3A, // Flash (20x20 mini format)
+} bjf4HardwareRevision_e;
+
+extern uint8_t hardwareRevision;
+
+void updateHardwareRevision(void);
+void detectHardwareRevision(void);

src/main/target/BLUEJAYF4/target.h

@@ -22,6 +22,9 @@
 
 #define USBD_PRODUCT_STRING     "BlueJayF4"
 
+#define USE_HARDWARE_REVISION_DETECTION
+#define HW_PIN                  PB2
+
 #define BOARD_HAS_VOLTAGE_DIVIDER
 #define USE_EXTI
 
@@ -76,11 +79,11 @@
 // Performance logging for SD card operations:
 // #define AFATFS_USE_INTROSPECTIVE_LOGGING
 
-//#define M25P16_CS_PIN           PB3
-//#define M25P16_SPI_INSTANCE     SPI3
+#define M25P16_CS_PIN           PB7
+#define M25P16_SPI_INSTANCE     SPI3
 
-//#define USE_FLASHFS
-//#define USE_FLASH_M25P16
+#define USE_FLASHFS
+#define USE_FLASH_M25P16
 
 #define USABLE_TIMER_CHANNEL_COUNT 7
 

src/main/target/BLUEJAYF4/target.mk

@@ -1,5 +1,5 @@
 F405_TARGETS    += $(TARGET)
-FEATURES        += SDCARD VCP
+FEATURES        += SDCARD VCP ONBOARDFLASH
 
 TARGET_SRC = \
             drivers/accgyro_spi_mpu6500.c \