Convert BufferedSolenoid to use HAL.

Change-Id: Ibb1f5d800923b340a4632ad79611442dc54aec34
diff --git a/frc971/wpilib/buffered_pcm.cc b/frc971/wpilib/buffered_pcm.cc
index 5f1dc67..bd52079 100644
--- a/frc971/wpilib/buffered_pcm.cc
+++ b/frc971/wpilib/buffered_pcm.cc
@@ -2,11 +2,25 @@
 
 #include <inttypes.h>
 
+#include <HAL/HAL.h>
+#include <HAL/Ports.h>
+#include <HAL/Solenoid.h>
 #include "aos/common/logging/logging.h"
 
 namespace frc971 {
 namespace wpilib {
 
+BufferedPcm::BufferedPcm(int module) : module_(module) {
+  for (int i = 0; i < 8; ++i) {
+    int32_t status = 0;
+    solenoid_handles_[i] =
+        HAL_InitializeSolenoidPort(HAL_GetPortWithModule(module_, i), &status);
+    if (status != 0) {
+      LOG(FATAL, "Status was %d\n", status);
+    }
+  }
+}
+
 ::std::unique_ptr<BufferedSolenoid> BufferedPcm::MakeSolenoid(int number) {
   return ::std::unique_ptr<BufferedSolenoid>(
       new BufferedSolenoid(number, this));
@@ -20,13 +34,23 @@
   }
 }
 
+int32_t BufferedPcm::GetAll() {
+  int32_t status = 0;
+  int32_t result = HAL_GetAllSolenoids(module_, &status);
+  if (status != 0) {
+    LOG(ERROR, "Failed to flush, %d\n", status);
+    return 0;
+  }
+  return result;
+}
+
 void BufferedPcm::Flush() {
   LOG(DEBUG, "sending solenoids 0x%" PRIx8 "\n", values_);
-#ifdef WPILIB2017
-  SolenoidBase::SetAll(values_, m_moduleNumber);
-#else
-  SolenoidBase::Set(values_, 0xFF, m_moduleNumber);
-#endif
+  int32_t status = 0;
+  HAL_SetAllSolenoids(module_, static_cast<int>(values_), &status);
+  if (status != 0) {
+    LOG(ERROR, "Failed to flush, %d\n", status);
+  }
 }
 
 }  // namespace wpilib