feat(PeriphDrivers): Add Clock Setter APIs for MAX32690 & MAX78002 Peripherals, Add Dual Mode TMR Support, Add MAX32690 Clock Calibration API for IPO, Add MAX32690 RISCV Clock Setter, CFS Support Functions

Libraries/CMSIS/Device/Maxim/MAX32690/Include/max32690.h

@@ -339,6 +339,8 @@ typedef enum {
 #define MXC_BASE_WDT1 ((uint32_t)0x40080800UL)
 #define MXC_WDT1 ((mxc_wdt_regs_t *)MXC_BASE_WDT1)
 
+#define MXC_WDT_GET_IDX(p) ((p) == MXC_WDT0 ? 0 : (p) == MXC_WDT1 ? 1 : -1)
+
 /******************************************************************************/
 /*                                                                   AES Keys */
 #define MXC_BASE_AESKEYS ((uint32_t)0x40005000UL)
@@ -834,6 +836,15 @@ typedef enum {
 #define MXC_USBHS_NUM_DMA 8 /* HW must have at least this many DMA channels */
 #define MXC_USBHS_MAX_PACKET 512
 
+/** @brief USB clock source options */
+typedef enum {
+    MXC_USB_CLOCK_SYS_DIV_10 = 0, ///< SYS_CLK divded by 10
+    MXC_USB_CLOCK_EXTCLK = 1, ///< External clock input
+    MXC_USB_CLOCK_ERFO = 2 ///< External RF Oscillator input
+} _mxc_usb_clock_t;
+
+#define mxc_usb_clock_t _mxc_usb_clock_t
+
 /******************************************************************************/
 /*                                                  Low Power General control */
 #define MXC_BASE_LPGCR ((uint32_t)0x40080000UL)

Libraries/CMSIS/Device/Maxim/MAX32690/Source/system_max32690.c

@@ -111,6 +111,12 @@ __weak void PinInit(void)
     /* Do nothing */
 }
 
+__weak int ClockInit(void)
+{
+    /* Do nothing */
+    return E_NO_ERROR;
+}
+
 /* This function can be implemented by the application to initialize the board */
 __weak int Board_Init(void)
 {
@@ -162,6 +168,7 @@ __weak void SystemInit(void)
     PalSysInit();
 
     PinInit();
+    ClockInit();
     Board_Init();
 
     __enable_irq();

Libraries/CMSIS/Device/Maxim/MAX78002/Include/max78002.h

@@ -677,6 +677,15 @@ typedef enum {
 #define MXC_USBHS_NUM_DMA 8 /* HW must have at least this many DMA channels */
 #define MXC_USBHS_MAX_PACKET 512
 
+/** @brief USB clock source options */
+typedef enum {
+    MXC_USB_CLOCK_SYS_DIV_10 = 0, ///< SYS_CLK divded by 10
+    MXC_USB_CLOCK_EXTCLK = 1, ///< External clock input
+    MXC_USB_CLOCK_ERFO = 2 ///< External RF Oscillator input
+} _mxc_usb_clock_t;
+
+#define mxc_usb_clock_t _mxc_usb_clock_t
+
 /******************************************************************************/
 /*                                                                       SDHC */
 #define MXC_BASE_SDHC ((uint32_t)0x400B6000UL)

Libraries/MAXUSB/include/core/usb.h

@@ -21,6 +21,7 @@
 #ifndef LIBRARIES_MAXUSB_INCLUDE_CORE_USB_H_
 #define LIBRARIES_MAXUSB_INCLUDE_CORE_USB_H_
 
+#include <stdbool.h>
 #include "usb_hwopt.h"
 #include "usb_protocol.h"
 
@@ -135,6 +136,48 @@ typedef struct {
  */
 int MXC_USB_Init(maxusb_cfg_options_t *options);
 
+#ifdef MAX32690
+// Clock setter mux APIs are currently only supported on the MAX32690.  It does not exist
+// on earlier hardware revisions such as the MAX32650
+
+#ifndef mxc_usb_clock_t
+#warning "mxc_usb_clock_t" not implemented.  See note in usb.h on "MXC_USB_SetClockSource"
+typedef enum {
+  MXC_USB_CLOCK_0 = 0,
+  MXC_USB_CLOCK_1 = 1,
+  MXC_USB_CLOCK_2 = 2
+} mxc_usb_clock_t;
+#endif
+
+/**
+ * @brief Set the input clock source to the USB peripheral.
+ *
+ * @param   clock_source Input clock source
+ * @note    (Developers): "mxc_usb_clock_t" should be defined as a macro in the top-level "max32xxx.h" file
+ *          so that the pre-processor can check for its existence.  Ex:
+ * 
+ *          #define mxc_usb_clock_t _mxc_usb_clock_t
+ * 
+ *          where "_mxc_usb_clock_t" is the actual "typedef enum".
+ *          See "max32690.h" for reference.
+ *  
+ * @return This function returns zero (0) for success, non-zero for failure
+ * 
+ */
+int MXC_USB_SetClockSource(mxc_usb_clock_t clock_source);
+
+/**
+ * @brief   Lock the input clock source to the USB peripheral.
+ *
+ * @param   lock Whether to lock the clock source.  Set to true to lock, false to unlock.
+ *  
+ * @return This function returns zero (0) for success, non-zero for failure
+ * 
+ */
+int MXC_USB_LockClockSource(bool lock);
+
+#endif
+
 /** 
  * @brief Shut down the USB peripheral block
  *

Libraries/MAXUSB/src/core/musbhsfc/usb.c

@@ -28,6 +28,11 @@
 #include "usbhs_regs.h"
 #include "usb.h"
 
+#ifdef MAX32690
+#include "fcr_regs.h"
+static bool g_is_clock_locked = false;
+#endif
+
 #define USBHS_M31_CLOCK_RECOVERY
 
 typedef enum {
@@ -173,6 +178,41 @@ int MXC_USB_Init(maxusb_cfg_options_t *options)
     return 0;
 }
 
+#ifdef MAX32690
+
+int MXC_USB_LockClockSource(bool lock)
+{
+    g_is_clock_locked = lock;
+    return E_NO_ERROR;
+}
+
+int MXC_USB_SetClockSource(mxc_usb_clock_t clock_source)
+{
+    if (g_is_clock_locked) {
+        return E_BAD_STATE; // Clock source must be unlocked to set it.
+    }
+
+    // The USB peripheral's clock source is set in the FCR register bank.
+    // The actual clock source selected by each field value may vary between 
+    // microcontrollers, so it is the responsibility of the implementer to define
+    // mxc_usb_clock_t correctly in the top-level "max32xxx.h" file.  The enum values
+    // should match the field values when type-casted to an unsigned int.
+    if ((unsigned int)clock_source < 0 || (unsigned int)clock_source >= 3) {
+        return E_BAD_PARAM;
+    }
+
+    mxc_sys_system_clock_t current_sys_clk = (mxc_sys_system_clock_t)(MXC_GCR->clkctrl & MXC_F_GCR_CLKCTRL_SYSCLK_SEL);
+    if (current_sys_clk != MXC_SYS_CLOCK_IPO && clock_source == MXC_USB_CLOCK_SYS_DIV_10) {
+        return E_BAD_STATE; // System clock must be set to the IPO for the USB PHY to use the internal clock
+    }
+
+    MXC_SETFIELD(MXC_FCR->fctrl0, MXC_F_FCR_FCTRL0_USBCLKSEL, ((unsigned int)clock_source) << MXC_F_FCR_FCTRL0_USBCLKSEL_POS);
+
+    return E_NO_ERROR;
+}
+
+#endif
+
 int MXC_USB_Shutdown(void)
 {
     /* Disconnect and disable HS, too. */

Libraries/PeriphDrivers/Include/MAX32690/adc.h

@@ -28,6 +28,7 @@
 #define LIBRARIES_PERIPHDRIVERS_INCLUDE_MAX32690_ADC_H_
 
 /* **** Includes **** */
+#include <stdbool.h>
 #include <stdint.h>
 #include "adc_regs.h"
 #include "mcr_regs.h"
@@ -98,10 +99,16 @@ typedef enum {
  * @brief       Clock settings
  */
 typedef enum {
-    MXC_ADC_HCLK = 0, ///< HCLK CLock
-    MXC_ADC_CLK_ADC0, ///< ADC0 Clock
-    MXC_ADC_CLK_ADC1, ///< ADC1 Clock
-    MXC_ADC_CLK_ADC2, ///< ADC2 Clock
+    MXC_ADC_CLK_SYS_OSC = 0,
+    MXC_ADC_CLK_EXT = 1,
+    MXC_ADC_CLK_IBRO = 2,
+    MXC_ADC_CLK_ERFO = 3,
+
+    // Legacy names
+    MXC_ADC_HCLK = MXC_ADC_CLK_SYS_OSC, ///< HCLK CLock
+    MXC_ADC_CLK_ADC0 = MXC_ADC_CLK_EXT, ///< ADC0 Clock
+    MXC_ADC_CLK_ADC1 = MXC_ADC_CLK_IBRO, ///< ADC1 Clock
+    MXC_ADC_CLK_ADC2 = MXC_ADC_CLK_ERFO, ///< ADC2 Clock
 } mxc_adc_clock_t;
 
 /**
@@ -235,6 +242,31 @@ typedef struct {
  */
 int MXC_ADC_Init(mxc_adc_req_t *req);
 
+/**
+ * @brief   Set the input clock source for the ADC peripheral
+ *
+ * @param   clock_source Input clock source 
+ * @return  Success/Fail, see \ref MXC_Error_Codes for a list of return codes.
+ */
+int MXC_ADC_SetClockSource(mxc_adc_clock_t clock_source);
+
+/**
+ * @brief   Lock the input clock source for the ADC peripheral.  The clock source
+ *          must be unlocked for it to be set.
+ *
+ * @param   lock Whether to lock the clock source.  Set to true to lock, false, to unlock. 
+ * @return  Success/Fail, see \ref MXC_Error_Codes for a list of return codes.
+ */
+int MXC_ADC_LockClockSource(bool lock);
+
+/**
+ * @brief   Set the clock divider the ADC peripheral's input clock
+ *
+ * @param   div Clock divider
+ * @return  Success/Fail, see \ref MXC_Error_Codes for a list of return codes.
+ */
+int MXC_ADC_SetClockDiv(mxc_adc_clkdiv_t div);
+
 /**
  * @brief   Shuts down the ADC
  *

Libraries/PeriphDrivers/Include/MAX32690/mxc.h

@@ -0,0 +1,78 @@
+/******************************************************************************
+ *
+ * Copyright (C) 2022-2023 Maxim Integrated Products, Inc. (now owned by 
+ * Analog Devices, Inc.),
+ * Copyright (C) 2023-2024 Analog Devices, Inc.
+ *
+ * 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 LIBRARIES_PERIPHDRIVERS_INCLUDE_MAX32690_MXC_H_
+#define LIBRARIES_PERIPHDRIVERS_INCLUDE_MAX32690_MXC_H_
+
+#ifdef __riscv
+// TODO(JC): This is a somewhat ugly hack added to avoid
+// implicit function warnings on RISC-V projects
+// when LIB_BOARD was added to libs.mk.  When the
+// RISC-V build system is improved to use libs.mk
+// this should be removed.
+#ifndef LIB_BOARD
+#define LIB_BOARD
+#endif
+#endif
+
+#include "mxc_device.h"
+#include "mxc_delay.h"
+#include "mxc_assert.h"
+#include "mxc_errors.h"
+#include "mxc_lock.h"
+#include "mxc_pins.h"
+#include "mxc_sys.h"
+#include "nvic_table.h"
+#ifdef LIB_BOARD
+#include "board.h"
+#endif
+
+/*
+ *  Peripheral Driver Includes
+ */
+#include "adc.h"
+// #include "aes.h" // TODO(JC): AES drivers not implemented for ME18 (?)
+#include "can.h"
+#include "crc.h"
+#include "ctb.h"
+#include "dma.h"
+#include "emcc.h"
+#include "flc.h"
+#include "gpio.h"
+#include "hpb.h"
+#include "i2c.h"
+#include "i2s.h"
+#include "icc.h"
+#include "lp.h"
+#include "lpcmp.h"
+#include "owm.h"
+#include "pt.h"
+#include "rtc.h"
+#include "sema.h"
+#include "spi.h"
+#include "spixf.h"
+#include "spixr.h"
+#include "tmr.h"
+#include "trng.h"
+#include "uart.h"
+#include "wdt.h"
+#include "wut.h"
+
+#endif // LIBRARIES_PERIPHDRIVERS_INCLUDE_MAX32690_MXC_H_

Libraries/PeriphDrivers/Include/MAX32690/mxc_sys.h

@@ -26,6 +26,7 @@
 #ifndef LIBRARIES_PERIPHDRIVERS_INCLUDE_MAX32690_MXC_SYS_H_
 #define LIBRARIES_PERIPHDRIVERS_INCLUDE_MAX32690_MXC_SYS_H_
 
+#include <stdbool.h>
 #include "mxc_device.h"
 #include "lpgcr_regs.h"
 #include "gcr_regs.h"
@@ -203,6 +204,11 @@ typedef enum {
         MXC_V_GCR_CLKCTRL_SYSCLK_SEL_EXTCLK /**< Use the external system clock input */
 } mxc_sys_system_clock_t;
 
+typedef enum {
+    MXC_SYS_RISCV_CLOCK_ISO, /**< Select the Internal Secondary Oscillator (ISO) as the RISCV clock source */
+    MXC_SYS_RISCV_CLOCK_PCLK /**< Select the Advanced Peripheral Bus (APB) clock as the RISCV clock source */
+} mxc_sys_riscv_clock_t;
+
 typedef enum {
     MXC_SYS_CLOCK_DIV_1 = MXC_S_GCR_CLKCTRL_SYSCLK_DIV_DIV1,
     MXC_SYS_CLOCK_DIV_2 = MXC_S_GCR_CLKCTRL_SYSCLK_DIV_DIV2,
@@ -394,6 +400,14 @@ void MXC_SYS_SetClockDiv(mxc_sys_system_clock_div_t div);
  */
 mxc_sys_system_clock_div_t MXC_SYS_GetClockDiv(void);
 
+/**
+ * @brief Calibrate the specified system clock.
+ * @param   clock Clock source to calibrate.  Note usually only the IPO supports calibration.  
+ *          Check the microcontroller's UG for more details.
+ * @returns         E_NO_ERROR if everything is successful.
+ */
+int MXC_SYS_ClockCalibrate(mxc_sys_system_clock_t clock);
+
 /**
  * @brief Wait for a clock to enable with timeout
  * @param      ready The clock to wait for
@@ -416,6 +430,14 @@ void MXC_SYS_RISCVRun(void);
  */
 void MXC_SYS_RISCVShutdown(void);
 
+/**
+ * @brief Set the clock source for the RISC-V core.
+ * 
+ * @param clock The clock source to set
+ * @returns 0 if successful, @ref MXC_Error_Codes on errors
+ */
+int MXC_SYS_RISCVClockSelect(mxc_sys_riscv_clock_t clock);
+
 /**
  * @brief Returns the clock rate (in Hz) of the Risc-V core.
  */
@@ -429,6 +451,18 @@ uint32_t MXC_SYS_RiscVClockRate(void);
  */
 int MXC_SYS_LockDAP_Permanent(void);
 
+/**
+ * @brief Bypass the crystal oscillator driver circuit for the specified clock.  Some clock sources
+ *        support this option, allowing an external square wave input signal to be fed directly to the
+ *        clock's input pin.  Refer to the microcontroller's User Guide for more details.
+ *
+ * @param   clock The clock source target
+ * @param   bypass Bypass the oscillator circuit or not.  Set to true to bypass, false to disable the bypass
+ * 
+ * @return @ref MXC_Error_Codes
+ */
+int MXC_SYS_SetBypass(mxc_sys_system_clock_t clock, bool bypass);
+
 #ifdef __cplusplus
 }
 #endif