From 05db82341770439061e780788822e55ecc11ab39 Mon Sep 17 00:00:00 2001
From: Mark Harfouche <mark.harfouche@gmail.com>
Date: Sat, 14 Dec 2019 17:25:54 -0500
Subject: [PATCH] enable control of SPI through the serial interface.

---
 CHANGELOG.md             |  4 ++++
 src/commandconstants.hpp | 27 +++++++++++++++++++++++++++
 src/main.cpp             |  9 ++++++++-
 3 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 98e07e7..a9e26da 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+### 0.0.9
+
+* Enable control of SPI through the interface.
+
 ### 0.0.8
 
 * Use git describe --tag to correctly identify the tags
diff --git a/src/commandconstants.hpp b/src/commandconstants.hpp
index e38abee..471a56e 100644
--- a/src/commandconstants.hpp
+++ b/src/commandconstants.hpp
@@ -28,6 +28,18 @@ int analog_write(CommandRouter *cmd, int argc, const char **argv);
 int analog_write_frequency(CommandRouter *cmd, int argc, const char **argv);
 int analog_write_resolution(CommandRouter *cmd, int argc, const char **argv);
 
+// SPI support
+int spi_begin(CommandRouter *cmd, int argc, const char **argv);
+int spi_end(CommandRouter *cmd, int argc, const char **argv);
+int spi_set_mosi(CommandRouter *cmd, int argc, const char **argv);
+int spi_set_miso(CommandRouter *cmd, int argc, const char **argv);
+int spi_set_sck(CommandRouter *cmd, int argc, const char **argv);
+int spi_settings(CommandRouter *cmd, int argc, const char **argv);
+int spi_begin_transaction(CommandRouter *cmd, int argc, const char **argv);
+int spi_end_transaction(CommandRouter *cmd, int argc, const char **argv);
+int spi_transfer(CommandRouter *cmd, int argc, const char **argv);
+int spi_transfer_bulk(CommandRouter *cmd, int argc, const char **argv);
+int spi_set_clock_divider(CommandRouter *cmd, int argc, const char **argv);
 // Syntax is: {short command, description, syntax}
 command_item_t command_list[] = {
     {"?", "Display help info", "?", command_help_func},
@@ -74,4 +86,19 @@ command_item_t command_list[] = {
      "analog_write_frequency pin frequency", analog_write_frequency},
     {"analog_write_resolution", "Write the resolution of the PWM timer",
      "analog_write_resolution bitdepth", analog_write_resolution},
+    {"spi_begin", "SPI Begin", "spi_begin", spi_begin},
+    {"spi_end", "SPI End", "spi_end", spi_begin},
+    {"spi_set_mosi", "SPI set MOSI", "spi_set_mosi mosi", spi_set_mosi},
+    {"spi_set_miso", "SPI set MISO ", " spi_set_miso miso", spi_set_miso},
+    {"spi_set_sck", "SPI set SCK ", " spi_set_sck sck", spi_set_sck},
+    {"spi_settings", "SPI set setting",
+     "spi_settings frequency bitOrder dataMode", spi_settings},
+    {"spi_begin_transaction", "spi_begin_transaction", "spi_begin_transaction",
+     spi_begin_transaction},
+    {"spi_end_transaction", "spi_end_transaction", "spi_end_transaction",
+     spi_end_transaction},
+    {"spi_transfer", "SPI Transfer 8bits of data", "spi_transfer data",
+     spi_transfer},
+    {"spi_transfer_bulk", "SPI transfer multiple sets of 8 bits of data",
+     "spi_transfer_bulk data[0] data[1] data[2] [...]", spi_transfer_bulk},
     {nullptr, nullptr, nullptr, nullptr}};
diff --git a/src/main.cpp b/src/main.cpp
index 5b15124..9d6297e 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -271,6 +271,13 @@ int spi_begin(CommandRouter *cmd, int argc, const char **argv) {
   SPI.begin();
   return 0;
 }
+int spi_end(CommandRouter *cmd, int argc, const char **argv) {
+  if (argc != 1) {
+    return EINVAL;
+  }
+  SPI.end();
+  return 0;
+}
 
 int spi_set_mosi(CommandRouter *cmd, int argc, const char **argv) {
   if (argc != 2) {
@@ -383,4 +390,4 @@ void loop() {
   if (Serial.available()) {
     cmd.processSerialStream();
   }
-}
\ No newline at end of file
+}