Commit 0f4ee2e4 authored by blmorris's avatar blmorris
Browse files
parents 0429d35f 5467186b
......@@ -315,7 +315,7 @@ STATIC void emit_inline_thumb_op(emit_inline_asm_t *emit, qstr op, int n_args, m
uint reg_dest = get_arg_reg(emit, op_str, pn_args[0], 15);
uint reg_src = get_arg_reg(emit, op_str, pn_args[1], 15);
asm_thumb_mov_reg_reg(emit->as, reg_dest, reg_src);
} else if (strcmp(op_str, "and") == 0) {
} else if (strcmp(op_str, "and_") == 0) {
op_code = ASM_THUMB_FORMAT_4_AND;
uint reg_dest, reg_src;
op_format_4:
......@@ -323,7 +323,6 @@ STATIC void emit_inline_thumb_op(emit_inline_asm_t *emit, qstr op, int n_args, m
reg_src = get_arg_reg(emit, op_str, pn_args[1], 7);
asm_thumb_format_4(emit->as, op_code, reg_dest, reg_src);
// TODO probably uses less ROM if these ops are in a lookup table
} else if (strcmp(op_str, "and") == 0) { op_code = ASM_THUMB_FORMAT_4_AND; goto op_format_4;
} else if (strcmp(op_str, "eor") == 0) { op_code = ASM_THUMB_FORMAT_4_EOR; goto op_format_4;
} else if (strcmp(op_str, "lsl") == 0) { op_code = ASM_THUMB_FORMAT_4_LSL; goto op_format_4;
} else if (strcmp(op_str, "lsr") == 0) { op_code = ASM_THUMB_FORMAT_4_LSR; goto op_format_4;
......
......@@ -75,7 +75,7 @@ int format_float(float f, char *buf, size_t buf_size, char fmt, int prec, char s
if (buf_size < 7) {
// Smallest exp notion is -9e+99 which is 6 chars plus terminating
// nulll.
// null.
if (buf_size >= 2) {
*s++ = '?';
......
......@@ -59,7 +59,7 @@ STATIC mp_obj_t array_append(mp_obj_t self_in, mp_obj_t arg);
STATIC void array_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t o_in, mp_print_kind_t kind) {
mp_obj_array_t *o = o_in;
if (o->typecode == BYTEARRAY_TYPECODE) {
print(env, "bytearray(b", o->typecode);
print(env, "bytearray(b");
mp_str_print_quoted(print, env, o->items, o->len, true);
} else {
print(env, "array('%c'", o->typecode);
......
......@@ -6,14 +6,7 @@ QSTR_DEFS = qstrdefsport.h
# include py core make definitions
include ../py/py.mk
ifeq ($(ARDUINO),)
$(error Please define ARDUINO (where TeensyDuino is installed))
endif
TOOLS_PATH = $(ARDUINO)/hardware/tools
COMPILER_PATH = $(TOOLS_PATH)/arm-none-eabi/bin
CORE_PATH = $(ARDUINO)/hardware/teensy/cores/teensy3
CROSS_COMPILE = $(COMPILER_PATH)/arm-none-eabi-
CROSS_COMPILE = arm-none-eabi-
CFLAGS_TEENSY = -DF_CPU=96000000 -DUSB_SERIAL -D__MK20DX256__
CFLAGS_CORTEX_M4 = -mthumb -mtune=cortex-m4 -mcpu=cortex-m4 -fsingle-precision-constant -Wdouble-promotion $(CFLAGS_TEENSY)
......@@ -22,13 +15,26 @@ INC = -I.
INC += -I$(PY_SRC)
INC += -I../stmhal
INC += -I$(BUILD)
INC += -I$(CORE_PATH)
INC += -Icore
CFLAGS = $(INC) -Wall -ansi -std=gnu99 -nostdlib $(CFLAGS_CORTEX_M4)
LDFLAGS = -nostdlib -T mk20dx256.ld
LIBS = -L $(COMPILER_PATH)/../arm-none-eabi/lib/thumb2 -lm
LIBS += -L $(COMPILER_PATH)/../arm-none-eabi/lib/thumb2 -lc
LIBS += -L $(COMPILER_PATH)/../lib/gcc/arm-none-eabi/4.7.2/thumb2 -lgcc
LIBGCC_FILE_NAME = $(shell $(CC) -print-libgcc-file-name)
LIBM_FILE_NAME = $(shell $(CC) -print-file-name=libm.a)
LIBC_FILE_NAME = $(shell $(CC) -print-file-name=libc.a)
#$(info %%%%% LIBGCC_FILE_NAME = $(LIBGCC_FILE_NAME))
#$(info %%%%% LIBM_FILE_NAME = $(LIBM_FILE_NAME))
#$(info %%%%% LIBC_FILE_NAME = $(LIBC_FILE_NAME))
#$(info %%%%% dirname LIBGCC_FILE_NAME = $(dir $(LIBGCC_FILE_NAME)))
#$(info %%%%% dirname LIBM_FILE_NAME = $(dir $(LIBM_FILE_NAME)))
#$(info %%%%% dirname LIBC_FILE_NAME = $(dir $(LIBC_FILE_NAME)))
LIBS = -L $(dir $(LIBM_FILE_NAME)) -lm
LIBS += -L $(dir $(LIBC_FILE_NAME)) -lc
LIBS += -L $(dir $(LIBGCC_FILE_NAME)) -lgcc
#Debugging/Optimization
ifdef DEBUG
......@@ -67,7 +73,7 @@ STM_SRC_S = $(addprefix stmhal/,\
gchelper.s \
)
SRC_TEENSY = \
SRC_TEENSY = $(addprefix core/,\
mk20dx128.c \
pins_teensy.c \
analog.c \
......@@ -76,6 +82,7 @@ SRC_TEENSY = \
usb_mem.c \
usb_serial.c \
yield.c \
)
OBJ = $(PY_O) $(addprefix $(BUILD)/, $(SRC_C:.c=.o) $(STM_SRC_C:.c=.o) $(STM_SRC_S:.s=.o) $(SRC_TEENSY:.c=.o))
OBJ += $(BUILD)/pins_gen.o
......@@ -83,6 +90,18 @@ OBJ += $(BUILD)/pins_gen.o
all: hex
hex: $(BUILD)/micropython-mz.hex
ifeq ($(ARDUINO),)
post_compile: $(BUILD)/micropython-mz.hex
$(ECHO) "Please define ARDUINO (where TeensyDuino is installed)"
exit 1
reboot:
$(ECHO) "Please define ARDUINO (where TeensyDuino is installed)"
exit 1
else
TOOLS_PATH = $(ARDUINO)/hardware/tools
post_compile: $(BUILD)/micropython-mz.hex
$(ECHO) "Preparing $@ for upload"
$(Q)$(TOOLS_PATH)/teensy_post_compile -file="$(basename $(<F))" -path="$(<D)" -tools="$(TOOLS_PATH)"
......@@ -90,8 +109,10 @@ post_compile: $(BUILD)/micropython-mz.hex
reboot:
$(ECHO) "REBOOT"
-$(Q)$(TOOLS_PATH)/teensy_reboot
endif
upload: post_compile reboot
.PHONY: deploy
deploy: post_compile reboot
$(BUILD)/micropython.elf: $(OBJ)
$(ECHO) "LINK $@"
......@@ -110,9 +131,6 @@ $(BUILD)/%.hex: $(BUILD)/%.elf
$(ECHO) "HEX $<"
$(Q)$(OBJCOPY) -O ihex -R .eeprom "$<" "$@"
$(BUILD)/%.o: $(CORE_PATH)/%.c
$(call compile_c)
MAKE_PINS = make-pins.py
BOARD_PINS = teensy-pins.csv
AF_FILE = mk20dx256-af.csv
......
//#include "WProgram.h"
#include "core_pins.h"
#include "pins_arduino.h"
/* Teensyduino Core Library
* http://www.pjrc.com/teensy/
* Copyright (c) 2013 PJRC.COM, LLC.
*
* 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:
*
* 1. The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* 2. If the Software is incorporated into a build system that allows
* selection among a list of target devices, then similar target
* devices manufactured by PJRC.COM must be included in the list of
* target devices and selectable in the same manner.
*
* 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 THE AUTHORS OR COPYRIGHT HOLDERS
* 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.
*/
#ifndef HardwareSerial_h
#define HardwareSerial_h
#include "mk20dx128.h"
#include <inttypes.h>
// uncomment to enable 9 bit formats
//#define SERIAL_9BIT_SUPPORT
#define SERIAL_7E1 0x02
#define SERIAL_7O1 0x03
#define SERIAL_8N1 0x00
#define SERIAL_8N2 0x04
#define SERIAL_8E1 0x06
#define SERIAL_8O1 0x07
#define SERIAL_7E1_RXINV 0x12
#define SERIAL_7O1_RXINV 0x13
#define SERIAL_8N1_RXINV 0x10
#define SERIAL_8N2_RXINV 0x14
#define SERIAL_8E1_RXINV 0x16
#define SERIAL_8O1_RXINV 0x17
#define SERIAL_7E1_TXINV 0x22
#define SERIAL_7O1_TXINV 0x23
#define SERIAL_8N1_TXINV 0x20
#define SERIAL_8N2_TXINV 0x24
#define SERIAL_8E1_TXINV 0x26
#define SERIAL_8O1_TXINV 0x27
#define SERIAL_7E1_RXINV_TXINV 0x32
#define SERIAL_7O1_RXINV_TXINV 0x33
#define SERIAL_8N1_RXINV_TXINV 0x30
#define SERIAL_8N2_RXINV_TXINV 0x34
#define SERIAL_8E1_RXINV_TXINV 0x36
#define SERIAL_8O1_RXINV_TXINV 0x37
#ifdef SERIAL_9BIT_SUPPORT
#define SERIAL_9N1 0x84
#define SERIAL_9E1 0x8E
#define SERIAL_9O1 0x8F
#define SERIAL_9N1_RXINV 0x94
#define SERIAL_9E1_RXINV 0x9E
#define SERIAL_9O1_RXINV 0x9F
#define SERIAL_9N1_TXINV 0xA4
#define SERIAL_9E1_TXINV 0xAE
#define SERIAL_9O1_TXINV 0xAF
#define SERIAL_9N1_RXINV_TXINV 0xB4
#define SERIAL_9E1_RXINV_TXINV 0xBE
#define SERIAL_9O1_RXINV_TXINV 0xBF
#endif
// bit0: parity, 0=even, 1=odd
// bit1: parity, 0=disable, 1=enable
// bit2: mode, 1=9bit, 0=8bit
// bit3: mode10: 1=10bit, 0=8bit
// bit4: rxinv, 0=normal, 1=inverted
// bit5: txinv, 0=normal, 1=inverted
// bit6: unused
// bit7: actual data goes into 9th bit
#define BAUD2DIV(baud) (((F_CPU * 2) + ((baud) >> 1)) / (baud))
#define BAUD2DIV3(baud) (((F_BUS * 2) + ((baud) >> 1)) / (baud))
// C language implementation
//
#ifdef __cplusplus
extern "C" {
#endif
void serial_begin(uint32_t divisor);
void serial_format(uint32_t format);
void serial_end(void);
void serial_set_transmit_pin(uint8_t pin);
void serial_putchar(uint32_t c);
void serial_write(const void *buf, unsigned int count);
void serial_flush(void);
int serial_available(void);
int serial_getchar(void);
int serial_peek(void);
void serial_clear(void);
void serial_print(const char *p);
void serial_phex(uint32_t n);
void serial_phex16(uint32_t n);
void serial_phex32(uint32_t n);
void serial2_begin(uint32_t divisor);
void serial2_format(uint32_t format);
void serial2_end(void);
void serial2_putchar(uint32_t c);
void serial2_write(const void *buf, unsigned int count);
void serial2_flush(void);
int serial2_available(void);
int serial2_getchar(void);
int serial2_peek(void);
void serial2_clear(void);
void serial3_begin(uint32_t divisor);
void serial3_format(uint32_t format);
void serial3_end(void);
void serial3_putchar(uint32_t c);
void serial3_write(const void *buf, unsigned int count);
void serial3_flush(void);
int serial3_available(void);
int serial3_getchar(void);
int serial3_peek(void);
void serial3_clear(void);
#ifdef __cplusplus
}
#endif
// C++ interface
//
#ifdef __cplusplus
#include "Stream.h"
class HardwareSerial : public Stream
{
public:
virtual void begin(uint32_t baud) { serial_begin(BAUD2DIV(baud)); }
virtual void begin(uint32_t baud, uint32_t format) {
serial_begin(BAUD2DIV(baud));
serial_format(format); }
virtual void end(void) { serial_end(); }
virtual void transmitterEnable(uint8_t pin) { serial_set_transmit_pin(pin); }
virtual int available(void) { return serial_available(); }
virtual int peek(void) { return serial_peek(); }
virtual int read(void) { return serial_getchar(); }
virtual void flush(void) { serial_flush(); }
virtual void clear(void) { serial_clear(); }
virtual size_t write(uint8_t c) { serial_putchar(c); return 1; }
virtual size_t write(unsigned long n) { return write((uint8_t)n); }
virtual size_t write(long n) { return write((uint8_t)n); }
virtual size_t write(unsigned int n) { return write((uint8_t)n); }
virtual size_t write(int n) { return write((uint8_t)n); }
virtual size_t write(const uint8_t *buffer, size_t size)
{ serial_write(buffer, size); return size; }
virtual size_t write(const char *str) { size_t len = strlen(str);
serial_write((const uint8_t *)str, len);
return len; }
virtual size_t write9bit(uint32_t c) { serial_putchar(c); return 1; }
};
extern HardwareSerial Serial1;
class HardwareSerial2 : public HardwareSerial
{
public:
virtual void begin(uint32_t baud) { serial2_begin(BAUD2DIV(baud)); }
virtual void begin(uint32_t baud, uint32_t format) {
serial2_begin(BAUD2DIV(baud));
serial2_format(format); }
virtual void end(void) { serial2_end(); }
virtual int available(void) { return serial2_available(); }
virtual int peek(void) { return serial2_peek(); }
virtual int read(void) { return serial2_getchar(); }
virtual void flush(void) { serial2_flush(); }
virtual void clear(void) { serial2_clear(); }
virtual size_t write(uint8_t c) { serial2_putchar(c); return 1; }
virtual size_t write(unsigned long n) { return write((uint8_t)n); }
virtual size_t write(long n) { return write((uint8_t)n); }
virtual size_t write(unsigned int n) { return write((uint8_t)n); }
virtual size_t write(int n) { return write((uint8_t)n); }
virtual size_t write(const uint8_t *buffer, size_t size)
{ serial2_write(buffer, size); return size; }
virtual size_t write(const char *str) { size_t len = strlen(str);
serial2_write((const uint8_t *)str, len);
return len; }
virtual size_t write9bit(uint32_t c) { serial2_putchar(c); return 1; }
};
extern HardwareSerial2 Serial2;
class HardwareSerial3 : public HardwareSerial
{
public:
virtual void begin(uint32_t baud) { serial3_begin(BAUD2DIV3(baud)); }
virtual void begin(uint32_t baud, uint32_t format) {
serial3_begin(BAUD2DIV3(baud));
serial3_format(format); }
virtual void end(void) { serial3_end(); }
virtual int available(void) { return serial3_available(); }
virtual int peek(void) { return serial3_peek(); }
virtual int read(void) { return serial3_getchar(); }
virtual void flush(void) { serial3_flush(); }
virtual void clear(void) { serial3_clear(); }
virtual size_t write(uint8_t c) { serial3_putchar(c); return 1; }
virtual size_t write(unsigned long n) { return write((uint8_t)n); }
virtual size_t write(long n) { return write((uint8_t)n); }
virtual size_t write(unsigned int n) { return write((uint8_t)n); }
virtual size_t write(int n) { return write((uint8_t)n); }
virtual size_t write(const uint8_t *buffer, size_t size)
{ serial3_write(buffer, size); return size; }
virtual size_t write(const char *str) { size_t len = strlen(str);
serial3_write((const uint8_t *)str, len);
return len; }
virtual size_t write9bit(uint32_t c) { serial3_putchar(c); return 1; }
};
extern HardwareSerial3 Serial3;
#endif
#endif
/* Teensyduino Core Library
* http://www.pjrc.com/teensy/
* Copyright (c) 2013 PJRC.COM, LLC.
*
* 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:
*
* 1. The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* 2. If the Software is incorporated into a build system that allows
* selection among a list of target devices, then similar target
* devices manufactured by PJRC.COM must be included in the list of
* target devices and selectable in the same manner.
*
* 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 THE AUTHORS OR COPYRIGHT HOLDERS
* 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.
*/
#include "core_pins.h"
//#include "HardwareSerial.h"
static uint8_t calibrating;
static uint8_t analog_right_shift = 0;
static uint8_t analog_config_bits = 10;
static uint8_t analog_num_average = 4;
static uint8_t analog_reference_internal = 0;
// the alternate clock is connected to OSCERCLK (16 MHz).
// datasheet says ADC clock should be 2 to 12 MHz for 16 bit mode
// datasheet says ADC clock should be 1 to 18 MHz for 8-12 bit mode
#if F_BUS == 60000000
#define ADC_CFG1_16BIT ADC_CFG1_ADIV(2) + ADC_CFG1_ADICLK(1) // 7.5 MHz
#define ADC_CFG1_12BIT ADC_CFG1_ADIV(1) + ADC_CFG1_ADICLK(1) // 15 MHz
#define ADC_CFG1_10BIT ADC_CFG1_ADIV(1) + ADC_CFG1_ADICLK(1) // 15 MHz
#define ADC_CFG1_8BIT ADC_CFG1_ADIV(1) + ADC_CFG1_ADICLK(1) // 15 MHz
#elif F_BUS == 56000000
#define ADC_CFG1_16BIT ADC_CFG1_ADIV(2) + ADC_CFG1_ADICLK(1) // 7 MHz
#define ADC_CFG1_12BIT ADC_CFG1_ADIV(1) + ADC_CFG1_ADICLK(1) // 14 MHz
#define ADC_CFG1_10BIT ADC_CFG1_ADIV(1) + ADC_CFG1_ADICLK(1) // 14 MHz
#define ADC_CFG1_8BIT ADC_CFG1_ADIV(1) + ADC_CFG1_ADICLK(1) // 14 MHz
#elif F_BUS == 48000000
#define ADC_CFG1_16BIT ADC_CFG1_ADIV(1) + ADC_CFG1_ADICLK(1) // 12 MHz
#define ADC_CFG1_12BIT ADC_CFG1_ADIV(1) + ADC_CFG1_ADICLK(1) // 12 MHz
#define ADC_CFG1_10BIT ADC_CFG1_ADIV(1) + ADC_CFG1_ADICLK(1) // 12 MHz
#define ADC_CFG1_8BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(1) // 24 MHz
#elif F_BUS == 40000000
#define ADC_CFG1_16BIT ADC_CFG1_ADIV(1) + ADC_CFG1_ADICLK(1) // 10 MHz
#define ADC_CFG1_12BIT ADC_CFG1_ADIV(1) + ADC_CFG1_ADICLK(1) // 10 MHz
#define ADC_CFG1_10BIT ADC_CFG1_ADIV(1) + ADC_CFG1_ADICLK(1) // 10 MHz
#define ADC_CFG1_8BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(1) // 20 MHz
#elif F_BUS == 36000000
#define ADC_CFG1_16BIT ADC_CFG1_ADIV(1) + ADC_CFG1_ADICLK(1) // 9 MHz
#define ADC_CFG1_12BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(1) // 18 MHz
#define ADC_CFG1_10BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(1) // 18 MHz
#define ADC_CFG1_8BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(1) // 18 MHz
#elif F_BUS == 24000000
#define ADC_CFG1_16BIT ADC_CFG1_ADIV(1) + ADC_CFG1_ADICLK(0) // 12 MHz
#define ADC_CFG1_12BIT ADC_CFG1_ADIV(1) + ADC_CFG1_ADICLK(0) // 12 MHz
#define ADC_CFG1_10BIT ADC_CFG1_ADIV(1) + ADC_CFG1_ADICLK(0) // 12 MHz
#define ADC_CFG1_8BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(0) // 24 MHz
#elif F_BUS == 16000000
#define ADC_CFG1_16BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(0) // 8 MHz
#define ADC_CFG1_12BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(0) // 8 MHz
#define ADC_CFG1_10BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(0) // 8 MHz
#define ADC_CFG1_8BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(0) // 16 MHz
#elif F_BUS == 8000000
#define ADC_CFG1_16BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(0) // 8 MHz
#define ADC_CFG1_12BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(0) // 8 MHz
#define ADC_CFG1_10BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(0) // 8 MHz
#define ADC_CFG1_8BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(0) // 8 MHz
#elif F_BUS == 4000000
#define ADC_CFG1_16BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(0) // 4 MHz
#define ADC_CFG1_12BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(0) // 4 MHz
#define ADC_CFG1_10BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(0) // 4 MHz
#define ADC_CFG1_8BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(0) // 4 MHz
#elif F_BUS == 2000000
#define ADC_CFG1_16BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(0) // 2 MHz
#define ADC_CFG1_12BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(0) // 2 MHz
#define ADC_CFG1_10BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(0) // 2 MHz
#define ADC_CFG1_8BIT ADC_CFG1_ADIV(0) + ADC_CFG1_ADICLK(0) // 2 MHz
#else
#error "F_BUS must be 60, 56, 48, 40, 36, 24, 4 or 2 MHz"
#endif
void analog_init(void)
{
uint32_t num;
VREF_TRM = 0x60;
VREF_SC = 0xE1; // enable 1.2 volt ref
if (analog_config_bits == 8) {
ADC0_CFG1 = ADC_CFG1_8BIT + ADC_CFG1_MODE(0);
ADC0_CFG2 = ADC_CFG2_MUXSEL + ADC_CFG2_ADLSTS(3);
#if defined(__MK20DX256__)
ADC1_CFG1 = ADC_CFG1_8BIT + ADC_CFG1_MODE(0);
ADC1_CFG2 = ADC_CFG2_MUXSEL + ADC_CFG2_ADLSTS(3);
#endif
} else if (analog_config_bits == 10) {
ADC0_CFG1 = ADC_CFG1_10BIT + ADC_CFG1_MODE(2) + ADC_CFG1_ADLSMP;
ADC0_CFG2 = ADC_CFG2_MUXSEL + ADC_CFG2_ADLSTS(3);
#if defined(__MK20DX256__)
ADC1_CFG1 = ADC_CFG1_10BIT + ADC_CFG1_MODE(2) + ADC_CFG1_ADLSMP;
ADC1_CFG2 = ADC_CFG2_MUXSEL + ADC_CFG2_ADLSTS(3);
#endif
} else if (analog_config_bits == 12) {
ADC0_CFG1 = ADC_CFG1_12BIT + ADC_CFG1_MODE(1) + ADC_CFG1_ADLSMP;
ADC0_CFG2 = ADC_CFG2_MUXSEL + ADC_CFG2_ADLSTS(2);
#if defined(__MK20DX256__)
ADC1_CFG1 = ADC_CFG1_12BIT + ADC_CFG1_MODE(1) + ADC_CFG1_ADLSMP;
ADC1_CFG2 = ADC_CFG2_MUXSEL + ADC_CFG2_ADLSTS(2);
#endif
} else {
ADC0_CFG1 = ADC_CFG1_16BIT + ADC_CFG1_MODE(3) + ADC_CFG1_ADLSMP;
ADC0_CFG2 = ADC_CFG2_MUXSEL + ADC_CFG2_ADLSTS(2);
#if defined(__MK20DX256__)
ADC1_CFG1 = ADC_CFG1_16BIT + ADC_CFG1_MODE(3) + ADC_CFG1_ADLSMP;
ADC1_CFG2 = ADC_CFG2_MUXSEL + ADC_CFG2_ADLSTS(2);
#endif
}
if (analog_reference_internal) {
ADC0_SC2 = ADC_SC2_REFSEL(1); // 1.2V ref
#if defined(__MK20DX256__)
ADC1_SC2 = ADC_SC2_REFSEL(1); // 1.2V ref
#endif
} else {
ADC0_SC2 = ADC_SC2_REFSEL(0); // vcc/ext ref
#if defined(__MK20DX256__)
ADC1_SC2 = ADC_SC2_REFSEL(0); // vcc/ext ref
#endif
}
num = analog_num_average;
if (num <= 1) {
ADC0_SC3 = ADC_SC3_CAL; // begin cal
#if defined(__MK20DX256__)
ADC1_SC3 = ADC_SC3_CAL; // begin cal
#endif
} else if (num <= 4) {
ADC0_SC3 = ADC_SC3_CAL + ADC_SC3_AVGE + ADC_SC3_AVGS(0);
#if defined(__MK20DX256__)
ADC1_SC3 = ADC_SC3_CAL + ADC_SC3_AVGE + ADC_SC3_AVGS(0);
#endif
} else if (num <= 8) {
ADC0_SC3 = ADC_SC3_CAL + ADC_SC3_AVGE + ADC_SC3_AVGS(1);
#if defined(__MK20DX256__)
ADC1_SC3 = ADC_SC3_CAL + ADC_SC3_AVGE + ADC_SC3_AVGS(1);
#endif
} else if (num <= 16) {
ADC0_SC3 = ADC_SC3_CAL + ADC_SC3_AVGE + ADC_SC3_AVGS(2);
#if defined(__MK20DX256__)
ADC1_SC3 = ADC_SC3_CAL + ADC_SC3_AVGE + ADC_SC3_AVGS(2);
#endif
} else {
ADC0_SC3 = ADC_SC3_CAL + ADC_SC3_AVGE + ADC_SC3_AVGS(3);
#if defined(__MK20DX256__)
ADC1_SC3 = ADC_SC3_CAL + ADC_SC3_AVGE + ADC_SC3_AVGS(3);
#endif
}
calibrating = 1;
}
static void wait_for_cal(void)
{
uint16_t sum;
//serial_print("wait_for_cal\n");
#if defined(__MK20DX128__)
while (ADC0_SC3 & ADC_SC3_CAL) {
// wait
}
#elif defined(__MK20DX256__)
while ((ADC0_SC3 & ADC_SC3_CAL) || (ADC1_SC3 & ADC_SC3_CAL)) {
// wait
}
#endif
__disable_irq();
if (calibrating) {
//serial_print("\n");
sum = ADC0_CLPS + ADC0_CLP4 + ADC0_CLP3 + ADC0_CLP2 + ADC0_CLP1 + ADC0_CLP0;
sum = (sum / 2) | 0x8000;
ADC0_PG = sum;
//serial_print("ADC0_PG = ");
//serial_phex16(sum);
//serial_print("\n");
sum = ADC0_CLMS + ADC0_CLM4 + ADC0_CLM3 + ADC0_CLM2 + ADC0_CLM1 + ADC0_CLM0;
sum = (sum / 2) | 0x8000;
ADC0_MG = sum;
//serial_print("ADC0_MG = ");
//serial_phex16(sum);
//serial_print("\n");
#if defined(__MK20DX256__)
sum = ADC1_CLPS + ADC1_CLP4 + ADC1_CLP3 + ADC1_CLP2 + ADC1_CLP1 + ADC1_CLP0;
sum = (sum / 2) | 0x8000;
ADC1_PG = sum;
sum = ADC1_CLMS + ADC1_CLM4 + ADC1_CLM3 + ADC1_CLM2 + ADC1_CLM1 + ADC1_CLM0;
sum = (sum / 2) | 0x8000;
ADC1_MG = sum;
#endif
calibrating = 0;
}
__enable_irq();
}
// ADCx_SC2[REFSEL] bit selects the voltage reference sources for ADC.
// VREFH/VREFL - connected as the primary reference option
// 1.2 V VREF_OUT - connected as the VALT reference option
#define DEFAULT 0
#define INTERNAL 2
#define INTERNAL1V2 2
#define INTERNAL1V1 2
#define EXTERNAL 0
void analogReference(uint8_t type)
{
if (type) {
// internal reference requested
if (!analog_reference_internal) {
analog_reference_internal = 1;
if (calibrating) {
ADC0_SC3 = 0; // cancel cal
#if defined(__MK20DX256__)
ADC1_SC3 = 0; // cancel cal
#endif
}
analog_init();
}