Added power interface test program

This commit is contained in:
Gregor Riepl 2021-01-11 00:25:02 +01:00
parent e7cf27851f
commit aaa925eeb7
3 changed files with 413 additions and 0 deletions

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PRG = poweriface
AVRCANLIB_PATH = ../../avr-can-lib
OBJ = main.o \
$(AVRCANLIB_PATH)/src/at90can_buffer.o \
$(AVRCANLIB_PATH)/src/at90can.o \
$(AVRCANLIB_PATH)/src/at90can_disable_dyn_filter.o \
$(AVRCANLIB_PATH)/src/at90can_error_register.o \
$(AVRCANLIB_PATH)/src/at90can_get_buf_message.o \
$(AVRCANLIB_PATH)/src/at90can_get_dyn_filter.o \
$(AVRCANLIB_PATH)/src/at90can_get_message.o \
$(AVRCANLIB_PATH)/src/at90can_send_buf_message.o \
$(AVRCANLIB_PATH)/src/at90can_send_message.o \
$(AVRCANLIB_PATH)/src/at90can_set_dyn_filter.o \
$(AVRCANLIB_PATH)/src/at90can_set_mode.o \
$(AVRCANLIB_PATH)/src/can_buffer.o
# These were defined for the avr-can-lib, but they really, really
# shouldn't be used there because they affect the whole program.
OPTIMIZE = -Os -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
PROGRAMMER = usbtiny
MCU_TARGET = atmega32m1
DEFS = -DF_CPU=16000000UL -DHAS_CAN_CONFIG_H
INCLUDES = -I. -I$(AVRCANLIB_PATH)
LIBS =
LFUSE = 0xdf
HFUSE = 0xd9
EFUSE = 0xfe
EXTRA_CLEAN_FILES =
# You should not have to change anything below here.
CC = avr-gcc
DUDE = avrdude
HOST_CC = gcc
HOST_CFLAGS = -O0 -g
HOST_LDFLAGS =
# Override is only needed by avr-lib build system.
override CFLAGS = -g -Wall $(OPTIMIZE) -mmcu=$(MCU_TARGET) $(DEFS) $(INCLUDES)
override LDFLAGS = -Wl,-Map,$(PRG).map
DUDEFLAGS = -c $(PROGRAMMER) -p $(MCU_TARGET)
OBJCOPY = avr-objcopy
OBJDUMP = avr-objdump
all: $(PRG).elf lst text eeprom
$(PRG).elf: $(OBJ) $(LIBS)
$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS)
clean:
rm -f $(OBJ) $(PRG).elf $(PRG).lst $(PRG).map $(PRG).bin $(PRG).hex $(PRG).srec $(PRG)_eeprom.bin $(PRG)_eeprom.hex $(PRG)_eeprom.srec $(EXTRA_CLEAN_FILES)
lst: $(PRG).lst
%.lst: %.elf
$(OBJDUMP) -h -S $< > $@
# Rules for flashing, EEPROM writing and fuse bit setting
flash: $(PRG).hex $(PRG)_eeprom.hex
$(DUDE) $(DUDEFLAGS) -U eeprom:w:$(PRG)_eeprom.hex:i -U flash:w:$(PRG).hex:i
flashprg: $(PRG).hex
$(DUDE) $(DUDEFLAGS) -U flash:w:$(PRG).hex:i
flasheep: $(PRG)_eeprom.hex
$(DUDE) $(DUDEFLAGS) -U eeprom:w:$(PRG)_eeprom.hex:i
fuse:
$(DUDE) $(DUDEFLAGS) -U hfuse:w:$(HFUSE):m -U lfuse:w:$(LFUSE):m -U efuse:w:$(EFUSE):m
# Rules for building the .text rom images
text: hex bin srec
hex: $(PRG).hex
bin: $(PRG).bin
srec: $(PRG).srec
%.hex: %.elf
$(OBJCOPY) -j .text -j .data -O ihex $< $@
%.srec: %.elf
$(OBJCOPY) -j .text -j .data -O srec $< $@
%.bin: %.elf
$(OBJCOPY) -j .text -j .data -O binary $< $@
# Rules for building the .eeprom rom images
eeprom: ehex ebin esrec
ehex: $(PRG)_eeprom.hex
ebin: $(PRG)_eeprom.bin
esrec: $(PRG)_eeprom.srec
%_eeprom.hex: %.elf
$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ \
|| { echo empty $@ not generated; exit 0; }
%_eeprom.srec: %.elf
$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O srec $< $@ \
|| { echo empty $@ not generated; exit 0; }
%_eeprom.bin: %.elf
$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O binary $< $@ \
|| { echo empty $@ not generated; exit 0; }

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#ifndef CONFIG_H
#define CONFIG_H
#define CAN_CONFIG_LOADED
// -----------------------------------------------------------------------------
/* Global settings for building the can-lib and application program.
*
* The following two #defines must be set identically for the can-lib and
* your application program. They control the underlying CAN struct. If the
* settings disagree, the underlying CAN struct will be broken, with
* unpredictable results.
* If can.h detects that any of the #defines is not defined, it will set them
* to the default values shown here, so it is in your own interest to have a
* consistent setting. Ommiting the #defines in both can-lib and application
* program will apply the defaults in a consistent way too.
*
* Select if you want to use 29 bit identifiers.
*/
#define SUPPORT_EXTENDED_CANID 1
/* Select if you want to use timestamps.
* Timestamps are sourced from a register internal to the AT90CAN.
* Selecting them on any other controller will have no effect, they will
* be 0 all the time.
*/
#define SUPPORT_TIMESTAMPS 0
// -----------------------------------------------------------------------------
/* Global settings for building the can-lib.
*
* Select ONE CAN controller for which you are building the can-lib.
*/
#define SUPPORT_MCP2515 0
#define SUPPORT_AT90CAN 1
#define SUPPORT_SJA1000 0
// -----------------------------------------------------------------------------
/* Setting for MCP2515
*
* Declare which pins you are using for communication.
* Remember NOT to use them in your application!
* It is a good idea to use bits from the port that carries MOSI, MISO, SCK.
*/
#define MCP2515_CS B,4
#define MCP2515_INT B,2
// -----------------------------------------------------------------------------
// Setting for SJA1000
#define SJA1000_INT E,0
#define SJA1000_MEMORY_MAPPED 1
// memory-mapped interface
#define SJA1000_BASE_ADDR 0x8000 // for ATMega162
/*
// port-interface
#define SJA1000_WR D,6
#define SJA1000_RD D,7
#define SJA1000_ALE E,1
#define SJA1000_CS C,0
#define SJA1000_DATA A
*/
// -----------------------------------------------------------------------------
// Setting for AT90CAN
// Number of CAN messages which are buffered in RAM additinally to the MObs
#define CAN_RX_BUFFER_SIZE 16
#define CAN_TX_BUFFER_SIZE 8
// only available if CAN_TX_BUFFER_SIZE > 0
#define CAN_FORCE_TX_ORDER 1
#endif // CONFIG_H

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poweriface/firmware/main.c Normal file
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#include <inttypes.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include <can.h>
#if ENABLE_SLEEP
#include <avr/sleep.h>
#endif
#if ENABLE_WATCHDOG
#include <avr/watchdog.h>
#endif
// Global state
struct {
#if ENABLE_SHUTDOWN
// Main loop run state (1 = running, 0 = shutdown)
uint8_t run;
#endif
// Message ready?
uint8_t ready;
// Receive buffer
uint8_t buffer[8];
// Message address
uint32_t address;
} state; //__attribute__ ((section (".noinit")));
inline void init(); // __attribute__((always_inline));
inline void shutdown(); // __attribute__((always_inline));
inline void init() {
// Disable interrupts before init
cli();
// Set state
//state.run = 0;
#if ENABLE_WATCHDOG
// Enable watchdog timer
wdt_enable(WDTO_500MS);
#endif
// Set clock divider to 1 after startup
// This is an alternative to clearing the CLKDIV8 fuse
// CLKPR = _BV(CLKPCE);
// CLKPR = 0x00;
// Enable GPIO and set low
// PORTB |= _BV(PB5);
PORTB &= ~(_BV(PB2) | _BV(PB3) | _BV(PB4));
DDRB |= (_BV(PB2) | _BV(PB3) | _BV(PB4));
}
inline void shutdown() {
// Disable interrupts
// Not needed when not using sleep, the compiler will generate a cli+busy loop
#if ENABLE_SLEEP
cli();
#endif
#if ENABLE_WATCHDOG
// Disable watchdog
wdt_disable();
#endif
}
// UART bit-uart_bang 8 bits on the debug port, LSB first, 1 stop bit, no parity, 9600 baud
void uart_bang(uint8_t data) {
// Start bit: low
PORTB &= ~_BV(PB4);
_delay_us(102);
for (uint8_t i = 0; i < 8; i++) {
// data bit
if (data & (_BV(i))) {
PORTB |= _BV(PB4);
} else {
PORTB &= ~_BV(PB4);
}
_delay_us(102);
}
// Stop bit: high (and stay there after)
PORTB |= _BV(PB4);
_delay_us(102);
}
// Bit-bang pattern (LSB first) out the data line and strobe
uint16_t bang(uint16_t data) {
uint16_t in = 0;
for (uint8_t i = 0; i < 16; i++) {
// Data bit
if (data & 1) {
PORTB |= _BV(PB4);
} else {
PORTB &= ~_BV(PB4);
}
// Clock
PORTB |= _BV(PB2);
_delay_us(4);
PORTB &= ~_BV(PB2);
_delay_us(4);
// Read
if (PINB & _BV(PB5)) {
in |= 1;
}
// Shift
data >>= 1;
in <<= 1;
}
// Strobe
PORTB |= _BV(PB3);
_delay_us(4);
PORTB &= ~_BV(PB3);
// Clear
PORTB &= ~_BV(PB4);
return in;
}
int main() {
// Initialize hardware
init();
// Initialize CAN interface
can_init(BITRATE_125_KBPS);
// Set up command filter
can_set_mode(NORMAL_MODE);
can_filter_t filter = {
.id = 0x100,
.mask = 0x1ff,
.flags = {
.rtr = 0,
.extended = 0,
},
};
can_set_filter(0, &filter);
// wait before start
//_delay_ms(10000);
// Enable interrupts to start reception
sei();
// Main loop
#if ENABLE_SHUTDOWN
state.run = 1;
while (state.run) {
#else
while (1) {
#endif
#if 0
// Test pattern
for (uint8_t i = 0; i < 5; i++) {
bang(0x0080 >> i);
_delay_ms(1000);
bang(0x0000);
_delay_ms(1000);
}
#else
// Check for new messages
if (can_check_message()) {
can_t msg = { 0 };
uint8_t status = can_get_message(&msg);
// uart_bang(status);
uint16_t in = 0;
if (status != 0 && msg.id == 0x100 && msg.length == 1) {
// uart_bang(msg.id & 0xff);
// uart_bang((msg.id >> 8) & 0xff);
// uart_bang((msg.id >> 16) & 0xff);
// uart_bang((msg.id >> 24) & 0xff);
// uart_bang(msg.flags.rtr);
// uart_bang(msg.flags.extended);
// uart_bang(msg.length);
// for (uint8_t i = 0; i < msg.length; i++) {
// uart_bang(msg.data[i]);
// }
//uint16_t out = msg.data[0] | ((uint16_t) msg.data[1] << 8);
if (msg.data[0] < 5) {
uint16_t out = 0x0080 >> msg.data[0];
bang(out);
_delay_ms(3000);
in = bang(0x0000);
}
//in = bang(0xffff);
}
if (can_check_free_buffer()) {
can_t msg = {
.id = 0x11,
.flags = {
.rtr = 0,
.extended = 0,
},
.length = 5,
.data = { 0xc0, 0xff, 0xee, in & 0xff, (in >> 8) & 0xff, },
};
uint8_t status = can_send_message(&msg);
// uart_bang(status);
} else {
// uart_bang(0xff);
}
}
#endif
#if ENABLE_SLEEP
// Let the MCU take a nap
set_sleep_mode(SLEEP_MODE_IDLE);
sleep_mode();
#endif
}
// Disable all peripherals and interrupts
shutdown();
// Power the MCU down
#if ENABLE_SLEEP
while (1) {
set_sleep_mode(SLEEP_MODE_PWR_DOWN);
sleep_mode();
}
__builtin_unreachable();
#endif
}