Initial commit

ESP32-S3 firmware acting as BMC for another board, controlling an ATX power supply and providing access to UART.

Co-authored with GLM-5

main/config.h

@@ -0,0 +1,122 @@
+#ifndef BMC_CONFIG_H
+#define BMC_CONFIG_H
+
+#include "driver/gpio.h"
+#include "driver/uart.h"
+
+// ============================================================================
+// Ethernet Configuration (W5500 SPI)
+// ============================================================================
+#define ETH_SPI_HOST SPI2_HOST
+#define ETH_SPI_MISO_GPIO GPIO_NUM_12
+#define ETH_SPI_MOSI_GPIO GPIO_NUM_11
+#define ETH_SPI_SCLK_GPIO GPIO_NUM_13
+#define ETH_SPI_CS_GPIO GPIO_NUM_14
+#define ETH_SPI_INT_GPIO GPIO_NUM_10
+#define ETH_SPI_RST_GPIO GPIO_NUM_9
+
+// MAC address (can be customized)
+#define ETH_MAC_ADDR {0x02, 0x00, 0x00, 0x12, 0x34, 0x56}
+
+// Network configuration (used if DHCP fails or is disabled)
+#define BMC_USE_DHCP 1
+#define BMC_STATIC_IP "192.168.1.100"
+#define BMC_NETMASK "255.255.255.0"
+#define BMC_GATEWAY "192.168.1.1"
+
+// ============================================================================
+// UART Serial Configuration
+// ============================================================================
+#define BMC_UART_NUM UART_NUM_1
+#define BMC_UART_TX_GPIO GPIO_NUM_43
+#define BMC_UART_RX_GPIO GPIO_NUM_44
+#define BMC_UART_BAUD_RATE 115200
+#define BMC_UART_BUF_SIZE 2048
+#define BMC_UART_TASK_STACK 4096
+#define BMC_UART_TASK_PRIO 5
+
+// ============================================================================
+// HTTP Server Configuration
+// ============================================================================
+#define BMC_HTTP_PORT 80
+#define BMC_HTTP_MAX_CONN 4
+#define BMC_HTTP_STACK_SIZE 8192
+
+// ============================================================================
+// GPIO Configuration
+// ============================================================================
+
+// Number of user-configurable GPIOs
+#define BMC_GPIO_COUNT 16
+
+// GPIO pin definitions with names and default modes
+typedef struct {
+	gpio_num_t pin;
+	const char *name;
+	gpio_mode_t mode;
+	int default_value;
+	bool inverted;      // Active-low logic
+	bool is_input_only; // Some pins are input-only
+} bmc_gpio_def_t;
+
+// Predefined GPIO assignments
+#define BMC_GPIO_POWER_ON GPIO_NUM_4
+#define BMC_GPIO_POWER_OFF GPIO_NUM_5
+#define BMC_GPIO_RESET GPIO_NUM_6
+#define BMC_GPIO_STATUS_LED GPIO_NUM_7
+#define BMC_GPIO_PWR_GOOD GPIO_NUM_15
+#define BMC_GPIO_TEMP_ALERT GPIO_NUM_16
+#define BMC_GPIO_FAN_CTRL GPIO_NUM_17
+#define BMC_GPIO_USER_1 GPIO_NUM_18
+#define BMC_GPIO_USER_2 GPIO_NUM_21
+#define BMC_GPIO_USER_3 GPIO_NUM_35
+#define BMC_GPIO_USER_4 GPIO_NUM_36
+#define BMC_GPIO_USER_5 GPIO_NUM_37
+#define BMC_GPIO_USER_6 GPIO_NUM_38
+#define BMC_GPIO_USER_7 GPIO_NUM_47
+#define BMC_GPIO_USER_8 GPIO_NUM_48
+
+// Default GPIO configuration table
+static const bmc_gpio_def_t bmc_gpio_defaults[BMC_GPIO_COUNT] = {
+    // Power control outputs
+    {  BMC_GPIO_POWER_ON,   "POWER_ON", GPIO_MODE_OUTPUT, 0, false, false},
+    { BMC_GPIO_POWER_OFF,  "POWER_OFF", GPIO_MODE_OUTPUT, 0, false, false},
+    {     BMC_GPIO_RESET,      "RESET", GPIO_MODE_OUTPUT, 0,  true, false}, // Active-low reset
+    {BMC_GPIO_STATUS_LED, "STATUS_LED", GPIO_MODE_OUTPUT, 0, false, false},
+
+    // Status inputs
+    {  BMC_GPIO_PWR_GOOD,   "PWR_GOOD",  GPIO_MODE_INPUT, 0, false, false},
+    {BMC_GPIO_TEMP_ALERT, "TEMP_ALERT",  GPIO_MODE_INPUT, 0,  true, false}, // Active-low alert
+
+    // PWM output
+    {  BMC_GPIO_FAN_CTRL,   "FAN_CTRL", GPIO_MODE_OUTPUT, 0, false, false},
+
+    // User-configurable GPIOs
+    {    BMC_GPIO_USER_1,     "USER_1",  GPIO_MODE_INPUT, 0, false, false},
+    {    BMC_GPIO_USER_2,     "USER_2",  GPIO_MODE_INPUT, 0, false, false},
+    {    BMC_GPIO_USER_3,     "USER_3",  GPIO_MODE_INPUT, 0, false, false},
+    {    BMC_GPIO_USER_4,     "USER_4",  GPIO_MODE_INPUT, 0, false, false},
+    {    BMC_GPIO_USER_5,     "USER_5",  GPIO_MODE_INPUT, 0, false,  true}, // Input-only on ESP32-S3
+    {    BMC_GPIO_USER_6,     "USER_6",  GPIO_MODE_INPUT, 0, false,  true}, // Input-only on ESP32-S3
+    {    BMC_GPIO_USER_7,     "USER_7",  GPIO_MODE_INPUT, 0, false,  true}, // Input-only on ESP32-S3
+    {    BMC_GPIO_USER_8,     "USER_8",  GPIO_MODE_INPUT, 0, false,  true}, // Input-only on ESP32-S3
+};
+
+// ============================================================================
+// Power Control Timing
+// ============================================================================
+#define BMC_POWER_ON_PULSE_MS 100
+#define BMC_POWER_OFF_PULSE_MS 5000
+#define BMC_RESET_PULSE_MS 100
+#define BMC_POWER_GOOD_DELAY_MS 2000
+
+// ============================================================================
+// Logging Tags
+// ============================================================================
+#define TAG_BMC "BMC"
+#define TAG_GPIO "GPIO"
+#define TAG_UART "UART"
+#define TAG_ETH "ETH"
+#define TAG_HTTP "HTTP"
+
+#endif // BMC_CONFIG_H