actual project

2026-04-12 20:11:17 +02:00
parent 4ebf35f285
commit 82e43b67da
11 changed files with 590 additions and 75 deletions
--- a/src/main.c
+++ b/src/main.c
@@ -0,0 +1,64 @@
+#include "ch32fun.h"
+#include "i2c_driver.h"
+#include "fan_driver.h"
+#include "i2c.h"
+
+volatile uint8_t i2c_registers[16] = {0x00};
+
+void onWrite(const uint8_t reg, const uint8_t length) {
+    if (length == 0) return;
+
+    switch (reg) {
+
+    case I2C_REG_TARGET_RPM:
+        fan_driver_target_rpm = i2c_get_register_word(i2c_registers, I2C_REG_TARGET_RPM);
+        printf("set tgt fan speed to %d\n", fan_driver_target_rpm);
+        break;
+
+    case I2C_REG_CURRENT_DUTY:
+        printf("set duty cycle to %d\n", i2c_get_register_word(i2c_registers, I2C_REG_CURRENT_DUTY));
+        break;
+
+    case I2C_REG_MODE:
+        fan_driver_control_mode = (i2c_registers[I2C_REG_MODE] & 0x01);
+        fan_driver_fan_type = (i2c_registers[I2C_REG_MODE] & 0x02) >> 1;
+        fan_driver_powered_down = (i2c_registers[I2C_REG_MODE] & 0x04) >> 2;
+        printf("set mode register to %x. control mode is %d, type is %d, powered down is %d\n", i2c_registers[I2C_REG_MODE], fan_driver_control_mode, fan_driver_fan_type, fan_driver_powered_down);
+        break;
+
+    default:
+        i2c_registers_reinit(i2c_registers);
+        break;
+    }
+
+    printf("wrote %d bytes to reg 0x%0x\n", length, reg);
+}
+
+int main() {
+    SystemInit();
+    printf("System bootup\n");
+
+    fan_driver_init();
+    fan_driver_pwm_set_duty(1000);
+
+    // Initialize I2C slave
+    funGpioInitC();
+    funPinMode(PC1, GPIO_CFGLR_OUT_10Mhz_AF_OD); // SDA
+    funPinMode(PC2, GPIO_CFGLR_OUT_10Mhz_AF_OD); // SCL
+    i2c_registers_reinit(i2c_registers);
+    i2c_registers_set_defaults(i2c_registers);
+
+    fan_driver_target_rpm = i2c_get_register_word(i2c_registers, I2C_REG_TARGET_RPM);
+    SetupI2CSlave(I2C_DEVICE_ADDR, i2c_registers, sizeof(i2c_registers), onWrite, NULL, false);
+
+    while (1) {
+        fan_driver_control_loop();
+
+        i2c_set_register_word(i2c_registers, I2C_REG_CURRENT_RPM, fan_driver_current_rpm);
+        i2c_set_register_word(i2c_registers, I2C_REG_CURRENT_DUTY, fan_driver_pwm_get_duty());
+        i2c_registers[I2C_REG_STATE] = (fan_driver_is_steady) | (fan_driver_is_stalled << 1); 
+
+        Delay_Ms(200);
+    }
+
+}