Add target support for XDOT_MAX32670

targets/TARGET_Maxim/TARGET_MAX32670/TARGET_XDOT_MAX32670/CMakeLists.txt

@@ -0,0 +1,16 @@
+add_library(mbed-xdot-max32670 INTERFACE)
+
+target_include_directories(mbed-xdot-max32670
+    INTERFACE
+        .
+)
+
+target_link_libraries(mbed-xdot-max32670
+    INTERFACE 
+        mbed-max32670
+)
+
+target_sources(mbed-xdot-max32670
+    INTERFACE
+        SystemInit.c
+)

targets/TARGET_Maxim/TARGET_MAX32670/TARGET_XDOT_MAX32670/PeripheralNames.h

@@ -0,0 +1,72 @@
+/*******************************************************************************
+ * Copyright (C) Maxim Integrated Products, Inc., All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+ * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Maxim Integrated
+ * Products, Inc. shall not be used except as stated in the Maxim Integrated
+ * Products, Inc. Branding Policy.
+ *
+ * The mere transfer of this software does not imply any licenses
+ * of trade secrets, proprietary technology, copyrights, patents,
+ * trademarks, maskwork rights, or any other form of intellectual
+ * property whatsoever. Maxim Integrated Products, Inc. retains all
+ * ownership rights.
+ *******************************************************************************
+ */
+
+#ifndef MBED_PERIPHERALNAMES_H
+#define MBED_PERIPHERALNAMES_H
+
+#include "cmsis.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    UART_0 = MXC_BASE_UART0,
+    UART_1 = MXC_BASE_UART1,
+    UART_2 = MXC_BASE_UART2,
+    UART_3 = MXC_BASE_UART3,
+#if defined(MBED_CONF_TARGET_STDIO_UART)
+    STDIO_UART  = MBED_CONF_TARGET_STDIO_UART,
+#else
+    STDIO_UART  = UART_0,
+#endif
+} UARTName;
+
+typedef enum {
+    I2C_0 = MXC_BASE_I2C0,
+    I2C_1 = MXC_BASE_I2C1,
+    I2C_2 = MXC_BASE_I2C2,
+} I2CName;
+
+typedef enum {
+    SPI_0 = MXC_BASE_SPI0,
+    SPI_1 = MXC_BASE_SPI1,
+    SPI_2 = MXC_BASE_SPI2,
+} SPIName;
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

targets/TARGET_Maxim/TARGET_MAX32670/TARGET_XDOT_MAX32670/PinNames.h

@@ -0,0 +1,189 @@
+/*******************************************************************************
+ * Copyright (C) 2022 Maxim Integrated Products, Inc., All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+ * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Maxim Integrated
+ * Products, Inc. shall not be used except as stated in the Maxim Integrated
+ * Products, Inc. Branding Policy.
+ *
+ * The mere transfer of this software does not imply any licenses
+ * of trade secrets, proprietary technology, copyrights, patents,
+ * trademarks, maskwork rights, or any other form of intellectual
+ * property whatsoever. Maxim Integrated Products, Inc. retains all
+ * ownership rights.
+ *******************************************************************************
+ */
+
+/* MBED TARGET LIST: MAX32670EVKIT */
+
+#ifndef MBED_PINNAMES_H
+#define MBED_PINNAMES_H
+
+#include "cmsis.h"
+#include "gpio_regs.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    PIN_INPUT  = 0,
+    PIN_OUTPUT = 1
+} PinDirection;
+
+#define PORT_SHIFT  12
+
+#define PINNAME_TO_PORT(name)   ((unsigned int)(name) >> PORT_SHIFT)
+#define PINNAME_TO_PIN(name)    ((unsigned int)(name) & ~(0xFFFFFFFF << PORT_SHIFT))
+#define NOT_CONNECTED (int)0xFFFFFFFF
+
+typedef enum {
+    // Port 0
+    P0_0 = (0 << PORT_SHIFT), 
+           P0_1,  P0_2,  P0_3,  P0_4,  P0_5,  P0_6,  P0_7, P0_8,  P0_9,  P0_10, P0_11, P0_12, P0_13, P0_14, P0_15, 
+    P0_16, P0_17, P0_18, P0_19, P0_20, P0_21, P0_22, P0_23,P0_24, P0_25, P0_26, P0_27, P0_28, P0_29, P0_30, P0_31,
+
+    // Port 1
+    P1_0 = (1 << PORT_SHIFT),
+           P1_1,  P1_2,  P1_3,  P1_4,  P1_5,  P1_6,  P1_7, P1_8,  P1_9,  P1_10, P1_11, P1_12, P1_13, P1_14, P1_15, 
+    P1_16, P1_17, P1_18, P1_19, P1_20, P1_21, P1_22, P1_23,P1_24, P1_25, P1_26, P1_27, P1_28, P1_29, P1_30, P1_31,
+
+    // USB bridge connected UART pins
+#if defined(MBED_CONF_TARGET_STDIO_UART_TX)
+    CONSOLE_TX   = MBED_CONF_TARGET_STDIO_UART_TX,
+#else
+    CONSOLE_TX   = P0_29,
+#endif // MBED_CONF_TARGET_STDIO_UART_TX
+
+#if defined(MBED_CONF_TARGET_STDIO_UART_RX)
+    CONSOLE_RX   = MBED_CONF_TARGET_STDIO_UART_RX,
+#else
+    CONSOLE_RX   = P0_28,
+#endif // MBED_CONF_TARGET_STDIO_UART_RX
+
+    STDIO_UART_TX  = CONSOLE_TX,
+    STDIO_UART_RX  = CONSOLE_RX,
+
+// ----- Start of xDot external pin definitions -----
+    WAKE        = P0_19,
+    GPIO0       = P0_30,
+    GPIO1       = P0_27,
+    GPIO2       = P0_26,
+    GPIO3       = P0_25,
+
+    // AT command port UART
+    UART_RX     = P0_8,
+    UART_TX     = P0_9,
+    UART_CTS    = P0_10,
+    UART_RTS    = P0_11,
+
+    UART0_RX    = UART_RX,
+    UART0_TX    = UART_TX,
+    UART0_CTS   = UART_CTS,
+    UART0_RTS   = UART_RTS,
+
+    // debug UART
+    UART1_RX   = P0_28,
+    UART1_TX   = P0_29,
+
+    // SwD
+    SWDIO       = P0_0,
+    SWCLK       = P0_1,
+
+    // I2C
+    I2C1_SCL    = P0_12,
+    I2C1_SDA    = P0_13,
+
+    // SPI
+    SPI0_SCK    = P0_4,
+    SPI0_MOSI   = P0_3,
+    SPI0_MISO   = P0_2,
+    SPI0_SS     = P0_5,
+// ----- End of xDot external pin definitions -----
+
+// ----- Start of xDot dedicated internal pins. -----
+    MEM_PWR_EN  = P0_24,     // Power to EEPROM, Flash & Secure element
+    FLASH_CS    = P0_23,
+
+    // EEPROM and SE I2C
+    I2C0_SCL    = P0_6,
+    I2C0_SDA    = P0_7,
+    SE_SDA      = I2C0_SDA,
+    SE_SCL      = I2C0_SCL,
+
+    // SX1262
+    SPI1_SCK    = P0_16,
+    SPI1_MOSI   = P0_15,
+    SPI1_MISO   = P0_14,
+    SPI1_SS     = P0_17,
+    LORA_MISO   = SPI1_MISO,
+    LORA_MOSI   = SPI1_MOSI,
+    LORA_SCK    = SPI1_SCK,
+    LORA_NSS    = SPI1_SS,
+
+    LORA_RESET  = P0_20,
+    LORA_BUSY   = P0_21,
+    LORA_DIO1   = P0_22,
+
+    RF_SW_CTRL  = P0_18,    // RF switch, active high
+// ----- End of xDot dedicated internal pins. -----
+
+// ----- Start of aliases for MAX32670 serial_api.c -----
+//  The xDot does not use these serial UARTs or the serial_api
+//  code. These pins are used on the xDot as detailed above.
+    UART0B_RX   = P0_24,
+    UART0B_TX   = P0_25,
+
+    UART1B_RX   = P0_2,
+    UART1B_TX   = P0_3,
+
+    UART2B_RX   = P0_14,
+    UART2B_TX   = P0_15,
+// ----- end of aliases for MAX32670 serial_api.c -----
+
+    // Not connected
+    NC = NOT_CONNECTED
+} PinName;
+
+#define LED1        P0_30
+#define I2C_SCL     I2C1_SCL
+#define I2C_SDA     I2C1_SDA
+#define SPI_MISO    SPI0_MISO
+#define SPI_MOSI    SPI0_MOSI
+#define SPI_SCK     SPI0_SCK
+#define SPI_NSS     SPI0_SS
+
+typedef enum {
+    PullNone = 0,
+	PullUp = 1,
+    PullDown = 2,
+    PullDefault = PullUp
+} PinMode;
+
+typedef enum {
+    LED_ON = 0,
+    LED_OFF = 1
+} LedStates;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

targets/TARGET_Maxim/TARGET_MAX32670/TARGET_XDOT_MAX32670/SystemInit.c

@@ -0,0 +1,90 @@
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "max32670.h"
+#include "gcr_regs.h"
+#include "mxc_sys.h"
+#include "pwrseq_regs.h"
+
+#define XDOT_ERFO_FREQ      24000000    // Change to 24000000 for xDot 1.5 Rev A
+
+void SystemCoreClockUpdateXdot(void)
+{
+    uint32_t base_freq, div, clk_src;
+
+    // Get the clock source and frequency
+    clk_src = (MXC_GCR->clkctrl & MXC_F_GCR_CLKCTRL_SYSCLK_SEL);
+    switch (clk_src)
+    {
+        case MXC_S_GCR_CLKCTRL_SYSCLK_SEL_EXTCLK:
+            base_freq = EXTCLK_FREQ;
+            break;
+        case MXC_S_GCR_CLKCTRL_SYSCLK_SEL_ERFO:
+            base_freq = XDOT_ERFO_FREQ;
+            break;
+        case MXC_S_GCR_CLKCTRL_SYSCLK_SEL_INRO:
+            base_freq = INRO_FREQ;
+            break;
+        case MXC_S_GCR_CLKCTRL_SYSCLK_SEL_IPO:
+        base_freq = IPO_FREQ;
+            break;
+        case MXC_S_GCR_CLKCTRL_SYSCLK_SEL_IBRO:
+        base_freq = IBRO_FREQ;
+            break;
+        case MXC_S_GCR_CLKCTRL_SYSCLK_SEL_ERTCO:
+            base_freq = ERTCO_FREQ;
+            break;
+        default:
+            // Codes 001 and 111 are reserved.
+            // This code should never execute, however, initialize to safe value.
+            base_freq = HIRC_FREQ;
+            break;
+    }
+    // Get the clock divider
+    if (clk_src == MXC_S_GCR_CLKCTRL_SYSCLK_SEL_IPO)
+    {
+        base_freq = base_freq >> ((MXC_GCR->clkctrl & MXC_F_GCR_CLKCTRL_IPO_DIV)>> MXC_F_GCR_CLKCTRL_IPO_DIV_POS);
+    }
+    div = (MXC_GCR->clkctrl & MXC_F_GCR_CLKCTRL_SYSCLK_DIV) >> MXC_F_GCR_CLKCTRL_SYSCLK_DIV_POS;
+
+    SystemCoreClock = base_freq >> div;
+
+    // base_freq1 = base_freq;
+    // div1 = div;
+    // sys_core_clk1 = SystemCoreClock;
+    // tries = 25;
+
+}
+
+int PreInit(void)
+{
+    return 0;
+}
+
+void SystemInit(void)
+{
+    /* Make sure interrupts are enabled. */
+    __enable_irq();
+
+#if (__FPU_PRESENT == 1)
+    /* Enable FPU on Cortex-M4, which occupies coprocessor slots 10 & 11 */
+    /* Grant full access, per "Table B3-24 CPACR bit assignments". */
+    /* DDI0403D "ARMv7-M Architecture Reference Manual" */
+    SCB->CPACR |= SCB_CPACR_CP10_Msk | SCB_CPACR_CP11_Msk;
+    __DSB();
+    __ISB();
+#endif
+
+    MXC_PWRSEQ->lpcn &= ~(1 << 31); // Ensure ERTCO is on
+
+    MXC_SYS_Clock_Select(MXC_SYS_CLOCK_IPO);
+    SystemCoreClockUpdateXdot();
+
+    // Increase drive strength of I2C_SE bus and Mem Pwr En.
+    // Note: Mem Pwr En doesn't help, higher drive strength on se i2c pins seems to though
+    MXC_GPIO0->ds0 |= (1 << 6) | (1 << 7) | (1 << 24);
+    MXC_GPIO0->ds1 |= (1 << 6) | (1 << 7) | (1 << 24);
+
+    MXC_SYS_ClockEnable(MXC_SYS_PERIPH_CLOCK_GPIO0); 
+    MXC_SYS_ClockEnable(MXC_SYS_PERIPH_CLOCK_GPIO1); 
+}

targets/targets.json

@@ -4022,6 +4022,16 @@
             "0350"
         ]
     },
+    "XDOT_MAX32670": {
+        "inherits": [
+            "MAX32670"
+        ],
+        "device_name": "MAX32670",
+        "bootloader_supported": true,
+        "detect_code": [
+            "0351"
+        ]
+    },
     "FF1705_L151CC": {
         "inherits": [
             "XDOT_L151CC"