Logs

Related to Microcontroller

Note: These logs track the STC8G1K17A peripheral implementation.

📅 16 / 02 / 2025

Peripheral Setup: Recovered PWM and ADC configurations.
Refactoring: Created separate Header and Source files for ADC and PWM modules to improve project modularity.

PWM Tuning: Fixed custom frequency logic.
Current Status: Reliable between 0-250 Hz. Performance above this range is currently unstable.
Servo Control: Successfully controlled a servo motor, though fine-tuning is required.
Timing Insight: Discovered frequency variation is best handled via Timer0 Overflow.
Temporary Solution: Initialize Timer0 after PWM Initialization with the required TimePeriod.
Formula:
```
Timer0 timePeriod = 1 / (PWM_freq * 256)
```
Note: PWM is set to work with Timer0 Overflow pulses.

UART Library: Completed Header and Source files.
Default: 9600 Baud @ 11.0592MHz.
PC Link: Successfully sent and received data between the MCU and PC using the STC Programmer UART helper.
Timer Conflict:

⚠️ Warning: UART uses Timer1 and PWM uses Timer0. Using both simultaneously leaves no hardware timers remaining.

I2C Prototype: Slave mode tested on STC8G1K8 using the STC8G1K17A library.
Issues: Partially successful; encountering blank data packets. Suspect I2C Interrupt timing.

PCA Modes: Tested Software mode and High Speed Pulse Output Mode (HSOM).
HSOM Logic: Since the counter toggles at a fixed pca_clk / 2^16, I implemented a workaround using interrupts to reset CH and CL registers to (2^16 - ticks) to control frequency.
IR Protocol: Implemented NEC format timing.
Current Issue: Signal is accurate but not yet modulated (likely a main loop timing conflict).

I2C Improvements: Added pin-switching functionality.
Buffer Access: Streamlined RXD buffer access.

Note: The first byte is currently ignored; using #value as a placeholder.