Add PSU fast discharge API for DC precharge step-down (v1.0.23).

Policy/executor hooks, event-driven OFF/ON state machine, and release binaries.

Co-authored-by: Cursor <cursoragent@cursor.com>

Core/Src/power_setpoint_policy.c

@@ -0,0 +1,77 @@
+#include "power_setpoint_policy.h"
+
+PowerSetpointAction_t PowerSetpoint_Decide(
+	const PowerSetpoint_t *applied,
+	const PowerSetpoint_t *next,
+	const PowerPathContext_t *ctx)
+{
+#if !PSD_ENABLE
+	(void)applied;
+	(void)next;
+	(void)ctx;
+	return POWER_SETPOINT_NORMAL;
+#else
+	uint16_t delta_v;
+
+	if (applied == 0 || next == 0 || ctx == 0) {
+		return POWER_SETPOINT_NORMAL;
+	}
+
+	if (next->voltage_V >= applied->voltage_V) {
+		return POWER_SETPOINT_NORMAL;
+	}
+
+	delta_v = (uint16_t)(applied->voltage_V - next->voltage_V);
+	if (delta_v < PSD_MIN_VOLTAGE_STEP_V) {
+		return POWER_SETPOINT_NORMAL;
+	}
+
+	if (applied->current_0p1A > PSD_MAX_CMD_CURRENT_0P1A ||
+	    next->current_0p1A > PSD_MAX_CMD_CURRENT_0P1A) {
+		return POWER_SETPOINT_NORMAL;
+	}
+
+	if (ctx->measured_current_0p1A >= PSD_MAX_MEASURED_CURRENT_0P1A) {
+		return POWER_SETPOINT_NORMAL;
+	}
+
+	if (ctx->measured_voltage_V <= (uint16_t)(next->voltage_V + PSD_DISCHARGE_MARGIN_V)) {
+		return POWER_SETPOINT_NORMAL;
+	}
+
+	if (ctx->power_delivery_active) {
+		return POWER_SETPOINT_NORMAL;
+	}
+
+	if (!ctx->enable_output) {
+		return POWER_SETPOINT_NORMAL;
+	}
+
+	if (!ctx->psu_state_connected) {
+		return POWER_SETPOINT_NORMAL;
+	}
+
+	if (!ctx->dc_contactor_closed) {
+		return POWER_SETPOINT_NORMAL;
+	}
+
+	if (!ctx->psu_hv_enabled) {
+		return POWER_SETPOINT_NORMAL;
+	}
+
+	if (ctx->psu_cont_fault || ctx->psu_fault) {
+		return POWER_SETPOINT_NORMAL;
+	}
+
+	if (ctx->fast_discharge_count >= PSD_MAX_PER_SESSION) {
+		return POWER_SETPOINT_NORMAL;
+	}
+
+	if (ctx->last_fast_discharge_ms != 0u &&
+	    (ctx->now_ms - ctx->last_fast_discharge_ms) < PSD_DEBOUNCE_MS) {
+		return POWER_SETPOINT_NORMAL;
+	}
+
+	return POWER_SETPOINT_FAST_DISCHARGE;
+#endif
+}