EP Atlas Target Updates

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/CMakeLists.txt

@@ -28,6 +28,7 @@ target_sources(mbed-nrf52
         serial_api.c
         sleep.c
         spi_api.c
+        subtarget_init.c
         trng_api.c
         us_ticker.c
         watchdog_api.c

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52840/CMakeLists.txt

@@ -25,6 +25,13 @@ target_include_directories(mbed-ep-atlas
         TARGET_EP_ATLAS
 )
 
+target_sources(mbed-ep-atlas
+    INTERFACE
+        TARGET_EP_ATLAS/ONBOARD_TELIT_ME310.cpp
+        TARGET_EP_ATLAS/usb_stdio.cpp
+        TARGET_EP_ATLAS/atlas_init.c
+)
+
 target_include_directories(mbed-nrf52840-dk
     INTERFACE
         TARGET_NRF52840_DK

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52840/TARGET_EP_ATLAS/atlas_init.c

@@ -0,0 +1,44 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2021 ARM Limited
+ * Copyright (c) 2021 Embedded Planet, Inc.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ */
+
+#include <stdint.h>
+
+#include "subtarget_init.h"
+
+#include "nrf.h"
+
+/**
+ * Override the subtarget sdk init startup hook (specific to nRF2)
+ * This will configure the internal regulator to operate at 3.3V
+ */
+void subtarget_sdk_init(void)
+{
+
+    if (NRF_UICR->REGOUT0 != UICR_REGOUT0_VOUT_3V3) {
+        NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen << NVMC_CONFIG_WEN_Pos;
+        while (NRF_NVMC->READY == NVMC_READY_READY_Busy) {}
+        NRF_UICR->REGOUT0 = UICR_REGOUT0_VOUT_3V3;
+        NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren << NVMC_CONFIG_WEN_Pos;
+        while (NRF_NVMC->READY == NVMC_READY_READY_Busy) {}
+
+        // Trigger a soft reset so that the settings take effect
+        NVIC_SystemReset();
+    }
+}
+
+

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52840/TARGET_EP_ATLAS/mbed_lib.json

@@ -10,13 +10,18 @@
             "help"                 : "Telit ME310C1 AT#PORTCFG Variant value",
             "macro_name"           : "EP_ATLAS_PORT_CONFIGURATION_VARIANT",
             "value"                : 0
+        },
+        "enable-usb-stdio-console": {
+            "help"                 : "Enables using USB Serial for the stdio console. If you use USB in your application, you must disable this feature and implement a composite USB device if you require USB serial output. This feature is disabled by default.",
+            "value"                : false
         }
     },
     "target_overrides": {
         "EP_ATLAS": {
-            "target.network-default-interface-type": "CELLULAR"
-
+            "target.network-default-interface-type": "CELLULAR",
+            "target.mbed_app_start": "0x1000",
+            "target.mbed_app_size": "0xDF000"
         }
 
     }
-}
+}

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52840/TARGET_EP_ATLAS/usb_stdio.cpp

@@ -0,0 +1,35 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2021 ARM Limited
+ * Copyright (c) 2021 Embedded Planet, Inc.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ */
+
+#include "USBSerial.h"
+#include "platform/mbed_retarget.h"
+
+#ifndef MBED_CONF_EP_ATLAS_ENABLE_USB_STDIO_CONSOLE
+#define MBED_CONF_EP_ATLAS_ENABLE_USB_STDIO_CONSOLE 0
+#endif
+
+#if MBED_CONF_EP_ATLAS_ENABLE_USB_STDIO_CONSOLE
+
+/* Retarget stdio to USBSerial */
+mbed::FileHandle *mbed::mbed_target_override_console(int fd)
+{
+    static USBSerial usb_serial;
+    return &usb_serial;
+}
+
+#endif

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/reloc_vector_table.c

@@ -1,28 +1,28 @@
-/* 
+/*
  * Copyright (c) 2016 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 
+ *
+ *   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 
+ *   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 
+ *   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 
+ *   4. This software, with or without modification, must only be used with a
  *      Nordic Semiconductor ASA integrated circuit.
  *
- *   5. Any software provided in binary or object form under this license must not be reverse 
- *      engineered, decompiled, modified and/or disassembled. 
- * 
+ *   5. Any software provided in binary or object form under this license must not be reverse
+ *      engineered, decompiled, modified and/or disassembled.
+ *
  * 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
@@ -33,9 +33,9 @@
  * 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 "nrf.h"
 #include "cmsis_nvic.h"
 #include "stdint.h"
@@ -48,15 +48,18 @@
 #endif
 
 #if defined(__ARMCC_VERSION)
-    __attribute__ ((section(".bss.nvictable")))
-    uint32_t nrf_dispatch_vector[NVIC_NUM_VECTORS];
+__attribute__((section(".bss.nvictable")))
+uint32_t nrf_dispatch_vector[NVIC_NUM_VECTORS];
 #elif defined(__GNUC__)
-    __attribute__ ((section(".nvictable")))
-    uint32_t nrf_dispatch_vector[NVIC_NUM_VECTORS];
+__attribute__((section(".nvictable")))
+uint32_t nrf_dispatch_vector[NVIC_NUM_VECTORS];
 #elif defined(__ICCARM__)
-    uint32_t nrf_dispatch_vector[NVIC_NUM_VECTORS] @ ".nvictable";
+uint32_t nrf_dispatch_vector[NVIC_NUM_VECTORS] @ ".nvictable";
 #endif
 
+#include "platform/mbed_toolchain.h"
+#include "subtarget_init.h"
+
 extern uint32_t __Vectors[];
 
 #define VECTORS_FLASH_START __Vectors
@@ -70,21 +73,21 @@ extern uint32_t __Vectors[];
 void nrf_reloc_vector_table(void)
 {
     // Copy and switch to dynamic vectors
-	uint32_t *old_vectors = VECTORS_FLASH_START;
-	uint32_t i;
-	for (i = 0; i< NVIC_NUM_VECTORS; i++) {
-		nrf_dispatch_vector[i] = old_vectors[i];
-	}
+    uint32_t *old_vectors = VECTORS_FLASH_START;
+    uint32_t i;
+    for (i = 0; i < NVIC_NUM_VECTORS; i++) {
+        nrf_dispatch_vector[i] = old_vectors[i];
+    }
 
 #if defined(SOFTDEVICE_PRESENT)
 
     /**
      * Before setting the new vector table address in the SoftDevice the MBR must be initialized.
      * If no bootloader is present the MBR will be initialized automatically.
      * If a bootloader is present nrf_dfu_mbr_init_sd must be called once and only once.
-     * 
+     *
      * By resetting the MBR and SoftDevice VTOR address first, it becomes safe to initialize
-     * the MBR again regardless of how the application was started. 
+     * the MBR again regardless of how the application was started.
      */
 
     /* Reset MBR VTOR to original state before calling MBR init. */
@@ -98,7 +101,7 @@ void nrf_reloc_vector_table(void)
     /* Set SCB->VTOR to go through MBR to trap SoftDevice service calls. */
     SCB->VTOR = 0x0;
 
-    /* Initialize MBR so SoftDevice service calls are being trapped correctly. 
+    /* Initialize MBR so SoftDevice service calls are being trapped correctly.
      * This call sets MBR_VTOR_ADDRESS to point to the SoftDevice's VTOR at address 0x1000.
      */
     nrf_dfu_mbr_init_sd();
@@ -109,17 +112,18 @@ void nrf_reloc_vector_table(void)
 #else
 
     /* No SoftDevice is present. Set all interrupts to vector table in RAM. */
-    SCB->VTOR = (uint32_t) nrf_dispatch_vector;    
+    SCB->VTOR = (uint32_t) nrf_dispatch_vector;
 #endif
 }
 
-
 void mbed_sdk_init(void)
 {
-	if (STDIO_UART_RTS != NC) {
-		gpio_t rts;
-		gpio_init_out(&rts, STDIO_UART_RTS);
-		/* Set STDIO_UART_RTS as gpio driven low */
-		gpio_write(&rts, 0);
-	}
+    if (STDIO_UART_RTS != NC) {
+        gpio_t rts;
+        gpio_init_out(&rts, STDIO_UART_RTS);
+        /* Set STDIO_UART_RTS as gpio driven low */
+        gpio_write(&rts, 0);
+    }
+
+    subtarget_sdk_init();
 }

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/subtarget_init.c

@@ -0,0 +1,25 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2021 ARM Limited
+ * Copyright (c) 2021 Embedded Planet, Inc.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ */
+
+#include "subtarget_init.h"
+#include "platform/mbed_toolchain.h"
+
+MBED_WEAK void subtarget_sdk_init(void)
+{
+    /* Do nothing by default */
+}

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/subtarget_init.h

@@ -0,0 +1,39 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2021 ARM Limited
+ * Copyright (c) 2021 Embedded Planet, Inc.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ */
+
+#ifndef _NORDIC_SUBTARGET_INIT_
+#define _NORDIC_SUBTARGET_INIT_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Since Mbed's `mbed_sdk_init` hook is used by the NRF52 family code, this
+ * initialization hook is provided so subtargets may implement their own startup
+ * initialization code, if necessary.
+ *
+ * By default, it is a blank function that is declared a "weak" symbol
+ */
+void subtarget_sdk_init(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _NORDIC_SUBTARGET_INIT_ */