diff options
Diffstat (limited to 'main/puzzle')
| -rw-r--r-- | main/puzzle/software/main/main.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/main/puzzle/software/main/main.c b/main/puzzle/software/main/main.c index c22e0a4..161062e 100644 --- a/main/puzzle/software/main/main.c +++ b/main/puzzle/software/main/main.c @@ -1,6 +1,143 @@ #include <stdio.h> +#include "driver/gpio.h" +#include "esp_log.h" +#include "driver/i2c.h" + +#define TAG "SoftwarePuzzle" +#define I2C_MASTER_NUM I2C_NUM_0 + +// pins are sorted [up -> down] when looking at the puzzelbox; +#define TOTAL_VALID 5 +#define INPUT_PINS {} +#define OUTPUT_PINS {} + +typedef enum { + UNINITIALIZED = 0U, + RESET, + PLAYING, + SOLVED, + ERROR +} PuzzleState; + +PuzzleState state = UNINITIALIZED; +const char* validCombinations[TOTAL_VALID] = {"11", "22", "33", "44", "55"}; + +void I2CMasterInit() { + i2c_config_t config; + config.mode = I2C_MODE_MASTER; + config.sda_io_num = I2C_MASTER_SDA_IO; + config.sda_pullup_en = GPIO_PULLUP_ENABLE; + config.scl_io_num = I2C_MASTER_SCL_IO; + config.scl_pullup_en = GPIO_PULLUP_ENABLE; + config.master.clk_speed = I2C_MASTER_FREQ_HZ; + i2c_param_config(I2C_MASTER_NUM, &conf); + i2c_driver_install(I2C_MASTER_NUM, config.mode, 0, 0, 0); +} + +void SendI2CUpdate(PuzzleState state) { + uint8_t data; + switch (state) { + case UNINITIALIZED: data = 0x00; break; + case RESET: data = 0x01; break; + case PLAYING: data = 0x02; break; + case SOLVED: data = 0x03; break; + case ERROR: data = 0x04; break; + default: data = 0xFF; // Unknown state + } + ESP_LOGI(TAG, "Sending state %d to main controller via I2C.", state); + + i2c_cmd_handle_t cmd = i2c_cmd_link_create(); + i2c_master_start(cmd); + i2c_master_write_byte(cmd, (I2C_SLAVE_ADDR << 1) | I2C_MASTER_WRITE, true); + i2c_master_write_byte(cmd, data, true); + i2c_master_stop(cmd); + esp_err_t ret = i2c_master_cmd_begin(I2C_MASTER_NUM, cmd, 1000 / portTICK_RATE_MS); + i2c_cmd_link_delete(cmd); + + if (ret == ESP_OK) { + ESP_LOGI(TAG, "State update sent successfully."); + } else { + ESP_LOGE(TAG, "Failed to send state update via I2C."); + } +} + +void SystemInit() { + gpio_config_t config; + + // Configure the input row with pull-up + config.intr_type = GPIO_INTR_DISABLE; + config.mode = GPIO_MODE_INPUT; + config.pin_bit_mask = (1ULL << INPUT_PINS[0]) | (1ULL << INPUT_PINS[1]) | (1ULL << INPUT_PINS[2]) | (1ULL << INPUT_PINS[3]); + config.pull_down_en = 0; + config.pull_up_en = 1; + gpio_config(&config); + + // configure the output row + config.mode = GPIO_MODE_OUTPUT; + config.pin_bit_mask = (1ULL << OUTPUT_PINS[0]) | (1ULL << OUTPUT_PINS[1]) | (1ULL << OUTPUT_PINS[2]); + config.pull_down_en = 0; + config.pull_up_en = 0; + gpio_config(&config); +} + +bool ValidateCombination(const int in, const int out) { + for ( int ans = 0; ans < TOTAL_VALID; ans++) { + if ( validCombinations[ans][0] == in ) { + if ( validCombinations[ans][1] == out ) + return true; + } + } + return false; +} + +void Update() { + bool validCombination = true; + + for ( int outputPin = 0; outputPin < VALID_TOTAL; outputPin++ ){ + // if a wrong in/out combination was given stop checking + if (validCombination == false) { + return; + } + + // set output pin LOW + gpio_set_level(OUTPUT_PINS[outputPin], 0); + for ( int inputPin = 0; inputPin < VALID_TOTAL; intputPin++ ){ + // check which input is set to LOW + if (gpio_get_level(INPUT_PINS[inputPin]) == 0) { + // remove message when going into production + ESP_LOGI(TAG, "Detected connection between output pin: '%s' and input pin: '%s'", outputPin, inputPin); + // check if found connection is valid + validCombination = ValidateCombination(inputPin, outputPin); + } + } + + // set output pin back to HIGH + gpio_set_level(OUTPUT_PINS[outputPin], 1); + } + + if ( validCombination == true ) { + ESP_LOGI(TAG, "Solved!"); + send_i2c_update(SOLVED); + state = SOLVED; + } +} void app_main() { + I2CMasterInit(); + SystemInit(); + ESP_LOGI("App", "GPIO and I2C initialized."); + + while (state != SOLVED) { + if( state == ERROR ) { + ESP_LOGE(TAG, "Error: Entered unknown state!"); + break; + } + + // add check if puzzle is active + // add request to get puzzle status from main framework + Update(); + vTaskDelay(pdMS_TO_TICKS(100)); // Delay to make sure it doesn't spam I2C + } }
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