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Author SHA1 Message Date
Kevin Thomas
e2d2b21551 fix(ir_cbm): clear PDE bit in pad config for proper pull-up input 
PADS_BANK0 GPIO5 had PDE (pull-down enable, bit 2) still set to its
reset default. With both PUE and PDE active the pin floated to ~VDD/2,
causing the Schmitt trigger to read LOW permanently. Clear PDE in
_configure_pad() so the pull-up works correctly.

Added PADS_BANK0_PDE_SHIFT define to rp2350.h.
 2026-04-06 21:47:48 -04:00
Kevin Thomas
8f20fcde28 fix(dht11_cbm): add dummy read on init to prevent first-read failure 2026-04-06 17:26:05 -04:00
Kevin Thomas
066c69f24b fix: remove duplicate docstrings from public functions in .c files 
Public function docstrings belong exclusively in .h headers per
coding convention. Only static helper functions and static variables
retain docstrings in .c files. Removed 413 duplicate docstrings
across 185 files (15 CBM + 15 C SDK projects). All 30 projects
rebuild with zero errors.
 2026-04-06 08:49:37 -04:00
Kevin Thomas
3604b3c921 refactor: enforce max 8 code lines, add docstrings, fix warnings across all Rust and C SDK projects 
Rust (all 15 projects):
- Refactored overlength functions: format_counter, format_u8, format_f32_1,
  format_u32_minimal, gpio_drive, read_sensor, poll_sensor, format_round_trip,
  format_u32, prepare_write_buf, write_min_digits, write_temp, UartDriver::init,
  init_spi, angle_to_pulse_us, compute_servo_level
- Added 200+ docstrings to test functions, mock structs, impl blocks
- Fixed pub static comments (//) to doc comments (///) in all main.rs files
- Fixed helper function ordering (helpers above callers)
- Fixed Fn(u32) -> FnMut(u32) bound in button poll_button
- Moved OneShot trait import from main.rs to board.rs in adc project
- Added unsafe {} blocks in flash unsafe fn bodies (Rust 2024 edition)
- Removed unused hal::Clock imports from pwm/servo main.rs
- All 15 projects build with zero errors and zero warnings

C Pico SDK (all 15 projects):
- Added docstrings to all public functions, macros, and static variables
- All 15 projects rebuilt with zero errors

Cleanup:
- Removed build/ and target/ directories from git tracking
- Added target/ to .gitignore
- Deleted temporary fix_rust_docs.py script
 2026-04-06 08:33:17 -04:00
Kevin Thomas
d9fe6c314e Update README.md 2026-04-06 08:19:56 -04:00
Kevin Thomas
c6c3d4a045 remove unused coprocessor driver from all CBM projects 
No project uses floating-point, so coprocessor_enable() was dead code.
Removes rp2350_coprocessor.c/.h and all references from reset handlers
and Makefiles across all 15 CBM drivers (0x01-0x0f).
 2026-04-05 21:36:42 -04:00
Kevin Thomas
e6d8ab4850 refactor: enforce 8-line Reset_Handler limit across CBM drivers 
Extract _late_init() wrappers in 0x04, 0x05, 0x0b, 0x0d, 0x0e, 0x0f
to keep Reset_Handler within the max 8 code-line standard.
 2026-04-05 21:29:31 -04:00
Kevin Thomas
1b4dfb3af4 Add 0x0f_flash_cbm bare-metal on-chip flash driver 2026-04-05 21:21:12 -04:00
Kevin Thomas
9f7cd133aa Add 0x0e_watchdog_cbm: bare-metal watchdog timer driver for RP2350 2026-04-05 20:39:08 -04:00
Kevin Thomas
eb8377e9d6 Move C Bare-Metal Drivers section above C Drivers in README 2026-04-05 20:33:06 -04:00
Kevin Thomas
66e66f9ac3 Add C Bare-Metal Drivers section to README (0x01-0x0d_cbm) 2026-04-05 20:32:01 -04:00
Kevin Thomas
424f604935 Add 0x0d_timer_cbm: bare-metal TIMER0 repeating alarm driver for RP2350 2026-04-05 20:28:23 -04:00
Kevin Thomas
998518dcda feat: add 0x0c_multicore_cbm bare-metal dual-core FIFO driver 2026-04-05 20:14:56 -04:00
Kevin Thomas
e82bd3d326 feat: add 0x0b_spi_cbm bare-metal SPI loopback driver 2026-04-05 18:49:36 -04:00
Kevin Thomas
9a760585e6 feat: add 0x0a_ir_cbm bare-metal NEC IR receiver 2026-04-05 18:36:30 -04:00
Kevin Thomas
108f3f5598 feat: add 0x09_dht11_cbm bare-metal DHT11 driver 
- Single-wire protocol on GPIO4 via SIO register bit-bang
- TIMER0 TIMERAWL for microsecond pulse-width measurement
- Tick generator configured for 1 us ticks at 12 MHz clk_ref
- UART output: humidity/temperature or wiring failure message
- Zero warnings, 1876 bytes text
 2026-04-05 18:30:18 -04:00
Kevin Thomas
6bb722ddee fix: correct 14.5 MHz to 12 MHz across all CBM projects 
- Update all docstrings from 14.5 MHz to 12 MHz XOSC (29 files)
- Fix 0x05_servo_cbm divider: INT=14/FRAC=8 (14.5) -> INT=12/FRAC=0 (12)
- Verified against RP2350 datasheet, Pico 2 board schematic, and SDK
 2026-04-05 18:19:43 -04:00
Kevin Thomas
99ed43d69f Add 0x08_lcd1602_cbm bare-metal LCD1602 driver 2026-04-05 18:01:39 -04:00
Kevin Thomas
614062fa52 Add bare-metal I2C driver for RP2350 (0x07_i2c_cbm) 2026-04-05 17:43:31 -04:00
Kevin Thomas
e36a1a537f Add bare-metal ADC driver for RP2350 (0x06_adc_cbm) 2026-04-05 17:34:07 -04:00
Kevin Thomas
10b514ed38 Add 0x05_servo_cbm: bare-metal RP2350 servo driver 
- PWM slice 3, channel A on GPIO6 at 50 Hz
- Fractional divider 14.5 (14.5 MHz XOSC / 50 Hz / 20000)
- Sweep 0-180-0 degrees in 10-degree steps
- Pulse range 1000-2000 us, angle-to-pulse mapping
- UART reports each angle step
- 1557B FLASH, 11 source files, zero warnings
 2026-04-05 16:25:29 -04:00
Kevin Thomas
7a42b2e088 Add 0x04_pwm_cbm: bare-metal RP2350 PWM driver 
- PWM slice 4, channel B on GPIO25 (onboard LED)
- Duty cycle sweep 0-100% in 5% steps for breathing effect
- Wrap 9999 with no clock division (~650 Hz from ROSC)
- UART reports each duty step
- 1390B FLASH, 11 source files, zero warnings
 2026-04-05 16:21:47 -04:00
Kevin Thomas
d912771a5e Add 0x03_button_cbm: bare-metal RP2350 button driver 
- GPIO15 active-low button input with internal pull-up
- 20ms software debounce via busy-wait confirmation
- LED mirrors button state, UART reports edge transitions
- New gpio_config_input_pullup() in GPIO driver
- 1555B FLASH, 13 source files, zero warnings
 2026-04-05 16:06:46 -04:00
Kevin Thomas
d5bdf49894 refactor: convert 0x01_uart_cbm and 0x02_blink_cbm to bare-metal Inc/Src structure 
- Restructure flat files into Inc/ (headers) and Src/ (sources)
- Replace constants.h with rp2350.h register layer (datasheet-verified)
- Add full Doxygen docstrings on all files, functions, and structs
- Replace build.bat/clean.bat with cross-platform Makefile
- Fix GPIO_IN offset (0x004), XOSC COUNT offset (0x10), SRAM size (520K)
- Rename blink_* API to led_* (name after peripheral, not feature)
- Build outputs to build/ directory
- Cross-platform .vscode configs (Windows/macOS/Linux)
 2026-04-05 15:57:44 -04:00
Kevin Thomas
e875b8af89 Update tutorial date and lesson number 2026-04-05 08:49:39 -04:00
Kevin Thomas
eb6150ffad Added cbm 1 2 2026-04-04 12:11:58 -04:00
Kevin Thomas
aa8f2ca754 Update README.md 2026-04-04 08:38:34 -04:00
Kevin Thomas
587ed8206e Update tutorial date and lesson information 2026-04-03 08:28:18 -04:00
Kevin Thomas
9834d5c96c Fixed Rust drivers 2026-04-02 11:36:06 -04:00
Kevin Thomas
2792583302 Update tutorial date and lesson details 2026-04-02 08:26:26 -04:00
Kevin Thomas
6e05a67783 Update README.md 2026-04-01 18:40:11 -04:00
Kevin Thomas
8f22cc7112 Update tutorial date and lesson number 2026-04-01 10:29:51 -04:00
Kevin Thomas
423352a9c0 Added FINAL ruberic and info 2026-03-31 15:13:37 -04:00
Kevin Thomas
d64a65947f Update tutorial date and lesson number 2026-03-31 10:26:02 -04:00
Kevin Thomas
167819df3a Add servo example project to README 2026-03-30 19:55:40 -04:00
Kevin Thomas
930822573b Update tutorial date and lesson number in README 2026-03-30 09:17:08 -04:00
Kevin Thomas
84be8d0755 Revise tutorial date and lesson in README 
Updated tutorial date and lesson number in README.
 2026-03-29 09:07:40 -04:00
Kevin Thomas
ac9559ba6d Update README.md 2026-03-28 22:50:11 -04:00
Kevin Thomas
1392a31221 Delete drivers/0x01_uart_asm_arm directory 2026-03-28 19:45:51 -04:00
Kevin Thomas
707a9fd01e Remove Assembler Drivers section from README 
Removed section about Assembler Drivers and its details.
 2026-03-28 19:45:01 -04:00
Kevin Thomas
f114f7b04f Update links for UART and Blinky examples 2026-03-28 19:44:00 -04:00
Kevin Thomas
76b10e740e Correct capitalization of 'Assembler' in README 2026-03-28 19:09:42 -04:00
Kevin Thomas
c611fcbc83 Add testing instructions to README 
Added a section on testing with a command to run integration tests.
 2026-03-28 19:05:19 -04:00
Kevin Thomas
a4bbfece18 Update README.md 2026-03-28 19:02:23 -04:00
Kevin Thomas
a74b231755 Update tutorial date and lesson number 2026-03-28 08:36:17 -04:00
Kevin Thomas
ecbce65ae3 Update README driver tables 2026-03-27 11:22:28 -04:00
Kevin Thomas
67013421c3 Add new driver implementations and workspace updates 2026-03-27 11:19:24 -04:00
Kevin Thomas
7ca0d0f78d Update tutorial date and lesson number 2026-03-27 07:35:05 -04:00
Kevin Thomas
d5703370ad Update tutorial date and lesson number 2026-03-26 09:29:46 -04:00
Kevin Thomas
cca3fe4cff Add 0x09_dht11_rust: DHT11 temperature/humidity sensor driver 2026-03-25 21:21:35 -04:00