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Bob Paddockhathach
Bob Paddock
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hathach
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Add support for NXP FRDM_K32L2A4S eval board.
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‎hw/bsp/board_mcu.h

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#elif CFG_TUSB_MCU == OPT_MCU_LPC51UXX || CFG_TUSB_MCU == OPT_MCU_LPC54XXX || \
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CFG_TUSB_MCU == OPT_MCU_LPC55XX || CFG_TUSB_MCU == OPT_MCU_MKL25ZXX || \
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CFG_TUSB_MCU == OPT_MCU_K32L2BXX
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CFG_TUSB_MCU == OPT_MCU_K32L2AXX || OPT_MCU_K32L2BXX
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#include "fsl_device_registers.h"
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#elif CFG_TUSB_MCU == OPT_MCU_NRF5X

‎hw/bsp/frdm_k32l2a4s/README.rst

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Jan/13/2023 13:04
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The FRDM-K32L2B3 Freedom development board provides a platform for
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evaluation and development of the K32 L2B MCU Family. -
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https://www.nxp.com/part/FRDM-K32L2B3#/
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TinyUSB does not include the board specific drivers. Those drivers
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need to be extracted from the MCUXpresso IDE and SDK.
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Install MCUXPresso version 11.6 or later and SDK 2.12 or later. Then
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build the example project "frdmk32l2b_hellow_worldvirual_com".
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From the frdmk32l2b_hellow_worldvirual_com project copy these files to
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this directory structure, in this directory:
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hw/mcu/nxp/mcux-sdk/devices/K32L2B31A
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CMSIS/
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config/
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drivers/
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gcc/
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fsl_device_registers.h
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K32L2B31A_features.h
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K32L2B31A.h
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./CMSIS:
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cmsis_armcc.h cmsis_armclang_ltm.h cmsis_gcc.h cmsis_version.h mpu_armv7.h
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cmsis_armclang.h cmsis_compiler.h cmsis_iccarm.h core_cm0plus.h
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./config:
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clock_config.c clock_config.h system_K32L2B31A.c system_K32L2B31A.h
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./drivers:
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fsl_clock.c fsl_common_arm.h fsl_gpio.c fsl_lpuart.h fsl_smc.h
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fsl_clock.h fsl_common.c fsl_gpio.h fsl_port.h fsl_uart.c
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fsl_common_arm.c fsl_common.h fsl_lpuart.c fsl_smc.c fsl_uart.h
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./gcc:
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frdmk32l2b.ld startup_k32l2b31a.c
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frdmk32l2b_library.ld frdmk32l2b_memory.ld
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The linker files have been renamed and the #include directive edited
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to match.
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Then to build a test project change to the directory
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examples/devices/cdc_msc and do:
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make BOARD=frdm_k32l2b
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The resulting .hex file will be found in the _build directory, copy
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that will to the FRDM board to run the demo.

‎hw/bsp/frdm_k32l2a4s/board.h

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/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019, Ha Thach (tinyusb.org)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* This file is part of the TinyUSB stack.
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*/
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#ifndef BOARD_H_
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#define BOARD_H_
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#include "fsl_device_registers.h"
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// LED
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// The Red LED is on PTE29.
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// The Green LED is on PTC4.
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// The Blue LED is on PTE31.
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#define LED_PIN_CLOCK kCLOCK_PortC
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#define LED_GPIO GPIOC
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#define LED_PORT PORTC
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#define LED_PIN 4
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#define LED_STATE_ON 0
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// SW3 button1
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#define BUTTON_PIN_CLOCK kCLOCK_PortE
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#define BUTTON_GPIO GPIOE
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#define BUTTON_PORT PORTE
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#define BUTTON_PIN 4
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#define BUTTON_STATE_ACTIVE 0
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// UART
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#define UART_PORT LPUART0
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#define UART_PIN_CLOCK kCLOCK_PortB
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#define UART_PIN_GPIO GPIOB
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#define UART_PIN_PORT PORTB
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#define UART_PIN_RX 16u
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#define UART_PIN_TX 17u
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#endif /* BOARD_H_ */

‎hw/bsp/frdm_k32l2a4s/board.mk

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# Default to a less-verbose build. If you want all the gory compiler output,
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# "VERBOSE=1" to the make command line.
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ifndef VERBOSE
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.SILENT:
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$(info Non-Verbose Output)
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else
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$(info Verbose Output)
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endif
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SDK_DIR = hw/mcu/nxp/mcux-sdk
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MCU_DIR = $(SDK_DIR)/devices/K32L2A4S
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ifdef VERBOSE
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$(info TOP='$(TOP)')
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$(info )
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$(info BSP='$(TOP)/hw/bsp/$(BOARD)')
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$(info )
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$(info TOP/SDK_DIR='$(TOP)/$(SDK_DIR)')
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$(info )
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$(info MCU_DIR='$(MCU_DIR)')
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$(info )
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endif
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DEPS_SUBMODULES += $(SDK_DIR)
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CFLAGS += \
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-mthumb \
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-mabi=aapcs \
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-mcpu=cortex-m0plus \
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-DCPU_K32L2A41VLH1A \
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-DCFG_TUSB_MCU=OPT_MCU_K32L2AXX
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# mcu driver cause following warnings
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CFLAGS += -Wno-error=unused-parameter -Wno-error=redundant-decls -Wno-error=cast-qual
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# All source paths should be relative to the top level.
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LD_FILE = $(MCU_DIR)/gcc/frdmk32l2a4s.ld
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LDFLAGS += -L$(TOP)/$(MCU_DIR)/gcc
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# Define Recursive Depth wildcard:
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rwildcard=$(foreach d,$(wildcard $1*),$(call rwildcard,$d/,$2) $(filter $(subst *,%,$2),$d))
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SRC_C += \
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src/portable/nxp/khci/dcd_khci.c \
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$(MCU_DIR)/gcc/startup_k32l2a41a.c
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SRC_C += $(call rwildcard,$(TOP)/$(MCU_DIR)/config,*.c)
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SRC_C += $(call rwildcard,$(TOP)/$(MCU_DIR)/drivers,*.c)
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INC += \
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$(TOP)/hw/bsp/$(BOARD) \
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$(TOP)/$(MCU_DIR)/CMSIS/ \
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$(TOP)/$(MCU_DIR) \
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$(TOP)/$(MCU_DIR)/config \
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$(TOP)/$(MCU_DIR)/drivers
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ifdef VERBOSE
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$(info INC = '$(strip $(INC))')
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$(info )
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$(info SRC_C = '$(sort $(strip $(SRC_C)))')
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$(info )
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endif
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# For freeRTOS port source
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FREERTOS_PORT = ARM_CM0
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# For flash-jlink target
74+
#JLINK_DEVICE = ?
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76+
# For flash-pyocd target
77+
PYOCD_TARGET = K32L2A
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# flash using pyocd
80+
flash: flash-pyocd

‎hw/bsp/frdm_k32l2a4s/frdm_k32l2a4s.c

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/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2018, hathach (tinyusb.org)
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* Copyright (c) 2020, Koji Kitayama
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
8+
* of this software and associated documentation files (the "Software"), to deal
9+
* in the Software without restriction, including without limitation the rights
10+
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11+
* copies of the Software, and to permit persons to whom the Software is
12+
* furnished to do so, subject to the following conditions:
13+
*
14+
* The above copyright notice and this permission notice shall be included in
15+
* all copies or substantial portions of the Software.
16+
*
17+
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18+
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19+
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20+
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21+
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22+
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23+
* THE SOFTWARE.
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*
25+
* This file is part of the TinyUSB stack.
26+
*/
27+
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#include "../board.h"
29+
#include "board.h"
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#include "fsl_gpio.h"
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#include "fsl_port.h"
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#include "fsl_clock.h"
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#include "fsl_lpuart.h"
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#include "clock_config.h"
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//--------------------------------------------------------------------+
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// Forward USB interrupt events to TinyUSB IRQ Handler
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//--------------------------------------------------------------------+
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void USB0_IRQHandler(void)
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{
42+
tud_int_handler(0);
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}
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void board_init(void)
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{
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/* Enable port clocks for UART/LED/Button pins */
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CLOCK_EnableClock(UART_PIN_CLOCK);
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CLOCK_EnableClock(LED_PIN_CLOCK);
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CLOCK_EnableClock(BUTTON_PIN_CLOCK);
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gpio_pin_config_t led_config = { kGPIO_DigitalOutput, 0 };
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GPIO_PinInit(LED_GPIO, LED_PIN, &led_config);
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PORT_SetPinMux(LED_PORT, LED_PIN, kPORT_MuxAsGpio);
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gpio_pin_config_t button_config = { kGPIO_DigitalInput, 0 };
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GPIO_PinInit(BUTTON_GPIO, BUTTON_PIN, &button_config);
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const port_pin_config_t BUTTON_CFG = {
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kPORT_PullUp,
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kPORT_FastSlewRate,
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kPORT_PassiveFilterDisable,
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kPORT_OpenDrainDisable,
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kPORT_LowDriveStrength,
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kPORT_MuxAsGpio,
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kPORT_UnlockRegister
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};
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PORT_SetPinConfig(BUTTON_PORT, BUTTON_PIN, &BUTTON_CFG);
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/*
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Enable LPUART0 clock and configure port pins.
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FIR clock is being used so the USB examples work.
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*/
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PCC_LPUART0 = 0U; /* Clock must be off to set PCS */
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PCC_LPUART0 = PCC_CLKCFG_PCS( 3U ); /* Select the clock. 1:OSCCLK/Bus Clock, 2:Slow IRC, 3: Fast IRC, 6: System PLL */
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PCC_LPUART0 |= PCC_CLKCFG_CGC( 1U ); /* Enable LPUART */
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/* PORTB16 (pin 62) is configured as LPUART0_RX */
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gpio_pin_config_t const lpuart_config_rx = { kGPIO_DigitalInput, 0 };
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GPIO_PinInit(UART_PIN_GPIO, UART_PIN_RX, &lpuart_config_rx);
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const port_pin_config_t UART_CFG = {
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kPORT_PullUp,
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kPORT_FastSlewRate,
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kPORT_PassiveFilterDisable,
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kPORT_OpenDrainDisable,
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kPORT_LowDriveStrength,
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kPORT_MuxAsGpio,
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kPORT_UnlockRegister
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};
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PORT_SetPinConfig(UART_PIN_PORT, UART_PIN_RX, &UART_CFG);
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PORT_SetPinMux( UART_PIN_PORT, UART_PIN_RX, kPORT_MuxAlt3);
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/* PORTB17 (pin 63) is configured as LPUART0_TX */
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gpio_pin_config_t const lpuart_config_tx = { kGPIO_DigitalOutput, 0 };
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GPIO_PinInit( UART_PIN_GPIO, UART_PIN_TX, &lpuart_config_tx);
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PORT_SetPinMux( UART_PIN_PORT, UART_PIN_TX, kPORT_MuxAlt3);
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BOARD_BootClockRUN();
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SystemCoreClockUpdate();
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#if CFG_TUSB_OS == OPT_OS_NONE
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// 1ms tick timer
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SysTick_Config(SystemCoreClock / 1000);
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#elif CFG_TUSB_OS == OPT_OS_FREERTOS
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// If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
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NVIC_SetPriority(USB0_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY );
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#endif
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lpuart_config_t uart_config;
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LPUART_GetDefaultConfig(&uart_config);
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uart_config.baudRate_Bps = CFG_BOARD_UART_BAUDRATE;
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uart_config.enableTx = true;
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uart_config.enableRx = true;
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LPUART_Init(UART_PORT, &uart_config, CLOCK_GetFreq(kCLOCK_ScgFircClk));
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// USB
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CLOCK_EnableUsbfs0Clock(kCLOCK_IpSrcFircAsync, 48000000U);
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}
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//--------------------------------------------------------------------+
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// Board porting API
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//--------------------------------------------------------------------+
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void board_led_write(bool state)
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{
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GPIO_PinWrite(LED_GPIO, LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
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}
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uint32_t board_button_read(void)
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{
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return BUTTON_STATE_ACTIVE == GPIO_PinRead(BUTTON_GPIO, BUTTON_PIN);
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}
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int board_uart_read(uint8_t* buf, int len)
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{
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#if 0 /*
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Use this version if want the LED to blink during BOARD=board_test,
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without having to hit a key.
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*/
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if( 0U != (kLPUART_RxDataRegFullFlag & LPUART_GetStatusFlags( UART_PORT )) )
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{
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LPUART_ReadBlocking(UART_PORT, buf, len);
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return len;
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}
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return( 0 );
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#else /* Wait for 'len' characters to come in */
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LPUART_ReadBlocking(UART_PORT, buf, len);
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return len;
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#endif
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}
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int board_uart_write(void const * buf, int len)
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{
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LPUART_WriteBlocking(UART_PORT, (uint8_t const*) buf, len);
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return len;
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}
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#if CFG_TUSB_OS == OPT_OS_NONE
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volatile uint32_t system_ticks = 0;
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void SysTick_Handler(void)
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{
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system_ticks++;
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}
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uint32_t board_millis(void)
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{
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return system_ticks;
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}
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#endif

‎src/common/tusb_mcu.h

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#define TUP_DCD_ENDPOINT_MAX 8
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#define TUP_RHPORT_HIGHSPEED 1 // Port0 HS, Port1 HS
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#elif TU_CHECK_MCU(OPT_MCU_MKL25ZXX, OPT_MCU_K32L2BXX)
88+
#elif TU_CHECK_MCU(OPT_MCU_MKL25ZXX, OPT_MCU_K32L2AXX, OPT_MCU_K32L2BXX)
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#define TUP_DCD_ENDPOINT_MAX 16
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#elif TU_CHECK_MCU(OPT_MCU_MM32F327X)

‎src/portable/nxp/khci/dcd_khci.c

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#include "tusb_option.h"
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#if CFG_TUD_ENABLED && ( \
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( CFG_TUSB_MCU == OPT_MCU_MKL25ZXX ) || ( CFG_TUSB_MCU == OPT_MCU_K32L2BXX ) \
31-
)
29+
#if CFG_TUD_ENABLED && \
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( \
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( CFG_TUSB_MCU == OPT_MCU_MKL25ZXX ) || \
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( CFG_TUSB_MCU == OPT_MCU_K32L2AXX ) || \
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( CFG_TUSB_MCU == OPT_MCU_K32L2BXX ) \
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)
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#include "fsl_device_registers.h"
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#define KHCI USB0

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