clean up rocketry code and update readme with dev instructions
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98
README.md
98
README.md
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@ -11,9 +11,9 @@ I have since switch to using C.
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Right now the station is fairly limited measuring only temperature, humidity,
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and atmospheric pressure. I have plans to expand the project to in the end measure:
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- tempature
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- humidity
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- atmospheric pressure
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- ✅ tempature
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- ✅ humidity
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- ✅ atmospheric pressure
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- noise levels
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- wind speed
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- wind direction
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@ -23,12 +23,100 @@ and atmospheric pressure. I have plans to expand the project to in the end measu
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## Hardware
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Sensors:
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- [BME280](https://shop.pimoroni.com/products/bme280-breakout?variant=29420960677971)
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- Node1: [BME280](https://shop.pimoroni.com/products/bme280-breakout?variant=29420960677971)
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MCs:
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- [Raspberry Pi Pico](https://www.raspberrypi.com/products/raspberry-pi-pico/)
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- Node1: [Raspberry Pi Pico W](https://www.raspberrypi.com/products/raspberry-pi-pico/)
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Other:
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- [Weatherproof Enclosure](https://shop.pimoroni.com/products/weatherproof-cover-for-outdoor-sensors?variant=40047884468307)
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_Note: I would not recommend buying from pimoroni from EU as shipping tax is huge!_
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## Dev
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### Env Setup
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From build folder run:
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```shell
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$ cmake -DPICO_BOARD=pico_w ..
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```
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This creates the needed makefiles
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### Build
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This turns the test.c file in the root dir into .elf and .uf2 files:
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```shell
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$ make node1
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```
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### Flash
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Once you have the .uf2 file you can transfer it to the pico by putting the pico
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in bootsel mode (hold button and plug it into pc) or you can flash the .elf file
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to the pico using `openocd`:
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```shell
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openocd -f interface/cmsis-dap.cfg -f target/rp2040.cfg -c "adapter speed 5000" -c "program node1.elf verify reset exit"
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```
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*note: after flashing with openocd the program will be paused. To unpause connect and run "continue"*
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### Shell
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You screen
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```shell
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$ fd tty.usb /dev
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/dev/tty.usbmodem102
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$ screen /dev/tty.usbmodem102 115200
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```
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Exit shell Ctrl+A Ctrl+|
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### Open debug connection
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```shell
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$ openocd -f interface/cmsis-dap.cfg -f target/rp2040.cfg -c "adapter speed 5000"
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```
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then in another window
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```shell
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$ lldb ./test.elf
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```
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Once in lldb you can do a bunch of stuff, see https://web.navan.dev/posts/2024-08-08-openocd-macos-lldb.html.
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```shell
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(lldb) platform select remote-gdb-server
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...
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(lldb) process connect connect://localhost:3333
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```
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Set breakpoint:
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```shell
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(lldb) breakpoint set --hardware --name main
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(lldb) continue # Continue execution
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(lldb) step # Step in
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(lldb) next # Step over
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(lldb) finish # Step out
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```
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Check vars:
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```shell
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(lldb) frame variable
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(lldb) print variable_name
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```
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Restarting the program:
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```shell
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(lldb) process plugin packet monitor reset run
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```
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234
node1.c
234
node1.c
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@ -1,240 +1,12 @@
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#include <stdio.h>
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#include "pico/stdlib.h"
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#include "hardware/pio.h"
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#include "hardware/clocks.h"
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#include "blink_led.pio.h"
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// #include "hardware/clocks.h"
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// == TM1637Display ==
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// #define TM1637_CMD_DATA_AUTO 0x40
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#define TM1637_DELAY_US 20 // Delay time in microseconds
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#define TM1637_CMD_DATA_FIXED 0x44
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#define TM1637_CMD_ADDR_START 0xC0
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#define TM1637_CMD_DISPLAY 0x88
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#define TM1637_BRIGHTNESS 5 // min 0 max 7
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typedef struct {
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uint clock_pin;
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uint data_pin;
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} TM1637Display;
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TM1637Display tm1637_init(uint clock_pin, uint data_pin);
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void tm1637_write_command(const TM1637Display *d, uint8_t command);
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void tm1637_display_number(const TM1637Display *d, uint num);
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void tm1637_start(const TM1637Display *display);
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void tm1637_stop(const TM1637Display *display);
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void tm1637_write_bit(const TM1637Display *display, bool bit);
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bool tm1637_write_byte(const TM1637Display *display, uint8_t byte);
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void tm1637_write_command(const TM1637Display *display, uint8_t command);
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const uint8_t tm1637_num_patterns[10] = {
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0x3F, // 0
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0x06, // 1
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0x5B, // 2
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0x4F, // 3
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0x66, // 4
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0x6D, // 5
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0x7D, // 6
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0x07, // 7
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0x7F, // 8
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0x6F // 9
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};
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TM1637Display tm1637_init(uint clock_pin, uint data_pin) {
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TM1637Display display;
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display.clock_pin = clock_pin;
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display.data_pin = data_pin;
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gpio_init(display.clock_pin);
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gpio_init(display.data_pin);
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gpio_set_dir(display.clock_pin, GPIO_OUT);
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gpio_set_dir(display.data_pin, GPIO_OUT);
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tm1637_write_command(&display, TM1637_CMD_DISPLAY | TM1637_BRIGHTNESS);
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return display;
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}
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void tm1637_start(const TM1637Display *display) {
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gpio_set_dir(display->data_pin, GPIO_OUT);
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gpio_put(display->data_pin, 1);
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gpio_put(display->clock_pin, 1);
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sleep_us(TM1637_DELAY_US);
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gpio_put(display->data_pin, 0);
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sleep_us(TM1637_DELAY_US);
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gpio_put(display->clock_pin, 0);
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}
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void tm1637_stop(const TM1637Display *display) {
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gpio_set_dir(display->data_pin, GPIO_OUT);
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gpio_put(display->clock_pin, 0);
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gpio_put(display->data_pin, 0);
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sleep_us(TM1637_DELAY_US);
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gpio_put(display->clock_pin, 1);
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sleep_us(TM1637_DELAY_US);
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gpio_put(display->data_pin, 1);
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sleep_us(TM1637_DELAY_US);
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}
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void tm1637_write_bit(const TM1637Display *display, bool bit) {
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gpio_put(display->clock_pin, 0);
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if (bit)
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{
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gpio_set_dir(display->data_pin, GPIO_IN);
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}
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else
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{
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gpio_set_dir(display->data_pin, GPIO_OUT);
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gpio_put(display->data_pin, 0);
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}
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sleep_us(TM1637_DELAY_US);
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gpio_put(display->clock_pin, 1);
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sleep_us(TM1637_DELAY_US);
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gpio_put(display->clock_pin, 0);
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gpio_set_dir(display->data_pin, GPIO_OUT);
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}
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bool tm1637_write_byte(const TM1637Display *display, uint8_t byte) {
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for (int i = 0; i < 8; i++)
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{
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tm1637_write_bit(display, byte & 0x01);
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byte >>= 1;
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}
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// Wait for ACK
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gpio_set_dir(display->data_pin, GPIO_IN);
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sleep_us(TM1637_DELAY_US);
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gpio_put(display->clock_pin, 0);
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sleep_us(TM1637_DELAY_US);
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gpio_put(display->clock_pin, 1);
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sleep_us(TM1637_DELAY_US);
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bool ack = !gpio_get(display->data_pin);
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gpio_put(display->clock_pin, 0);
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gpio_set_dir(display->data_pin, GPIO_OUT);
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return ack;
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}
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void tm1637_write_command(const TM1637Display *display, uint8_t command) {
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tm1637_start(display);
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tm1637_write_byte(display, command);
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tm1637_stop(display);
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}
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void tm1637_display_number(const TM1637Display *display, uint num) {
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if (num > 9999) return;
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uint8_t digits[4] = {0};
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// Extract digits and store them in the array from most significant digit to least significant digit
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for (int i = 0; i < 4; i++)
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{
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digits[3 - i] = num % 10;
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num /= 10;
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}
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tm1637_start(display);
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bool ack = tm1637_write_byte(display, TM1637_CMD_DATA_FIXED);
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tm1637_stop(display);
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if(!ack) return tm1637_display_number(display, num);
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for (int i = 0; i < 4; i++)
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{
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tm1637_start(display);
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bool ack1 = tm1637_write_byte(display, TM1637_CMD_ADDR_START + i);
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bool ack2 = tm1637_write_byte(display, tm1637_num_patterns[digits[i]]);
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tm1637_stop(display);
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if(!ack1 || !ack2) return tm1637_display_number(display, num);
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}
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}
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// == LEDS ==
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void init_leds() {
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gpio_init(PICO_DEFAULT_LED_PIN);
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gpio_set_dir(PICO_DEFAULT_LED_PIN, GPIO_OUT);
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}
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void set_led(bool state) {
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gpio_put(PICO_DEFAULT_LED_PIN, state);
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}
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// == RGB_LED ==
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// #define RGB_LED_PIN PICO_DEFAULT_LED_PIN
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#define RGB_PIO_FREQ 2000
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// PIO blink example: https://www.digikey.com/en/maker/projects/raspberry-pi-pico-and-rp2040-cc-part-3-how-to-use-pio/123ff7700bc547c79a504858c1bd8110
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// static const uint led_pin = 25;
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// static const float pio_freq = 2000;
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void init_rgb_leds() {
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//Choose PIO instance (0 or 1)
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PIO pio = pio0;
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// Get first free state machine in PIO 0
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uint sm = pio_claim_unused_sm(pio, true);
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// Add PIO program to PIO instruction memory. SDK will find location and
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// return with the memory offset of the program.
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uint offset = pio_add_program(pio, &blink_program);
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// Calculate the PIO clock divider
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float div = (float)clock_get_hz(clk_sys) / RGB_PIO_FREQ;
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// Initialize the program using the helper function in our .pio file
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blink_program_init(pio, sm, offset, PICO_DEFAULT_LED_PIN, div);
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// Start running our PIO program in the state machine
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pio_sm_set_enabled(pio, sm, true);
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}
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// == Buttons ==
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#define ARM_BTN_GPIO 15
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void init_btn(uint pin) {
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gpio_init(pin);
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gpio_set_dir(pin, GPIO_IN);
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gpio_pull_up(pin);
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}
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alarm_id_t armed_timer_id;
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int64_t armed_cb() {
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printf("ROCKET ARMED\n");
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return 0;
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}
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bool arm_btn_pressed = false;
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void check_btns() {
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if(!gpio_get(ARM_BTN_GPIO) && !arm_btn_pressed) {
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printf("BTN PRESSED\n");
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armed_timer_id = add_alarm_in_ms(5000, armed_cb, NULL, false);
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arm_btn_pressed = true;
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set_led(true);
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}
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if(gpio_get(ARM_BTN_GPIO) && arm_btn_pressed) {
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printf("BTN LET GO\n");
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cancel_alarm(armed_timer_id);
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arm_btn_pressed = false;
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set_led(false);
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}
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}
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int main() {
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stdio_init_all();
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// const TM1637Display digit_display_001 = tm1637_init(12, 13);
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// const TM1637Display digit_display_002 = tm1637_init(14, 15);
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// init_btn(ARM_BTN_GPIO);
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// init_leds();
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init_rgb_leds();
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// static absolute_time_t delayed_by_ms (const absolute_time_t t, uint32_t ms)
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// volatile bool timer_fired = false;
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while (true) {
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check_btns();
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sleep_us(50);
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// for (int i = 0; i <= 9999; i ++) {
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// printf("Display: %d \n", i);
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// // tm1637_display_number(&digit_display_001, i);
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// tm1637_display_number(&digit_display_002, i);
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// sleep_ms(100);
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// }
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sleep_ms(1000);
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printf("One Second\n");
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}
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}
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