Merge pull request #10 from vetonsaliu8/master

Add analog_read capability

CHANGELOG.md

@@ -1,3 +1,7 @@
+### 0.0.15
+
+* Add the ability to do analog reads.
+
 ### 0.0.14
 
 * Enable reading and writing a contiguous payload of bytes

src/commandconstants.hpp

@@ -30,6 +30,9 @@ 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);
 
+// Analog IO
+int analog_read(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);
@@ -98,6 +101,8 @@ 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},
+    {"analog_read", "Read the value of an analog pin, 0-255",
+     "analog_read pin", analog_read},
     {"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},

src/main.cpp

@@ -332,6 +332,17 @@ int analog_write(CommandRouter *cmd, int argc, const char **argv) {
   return 0;
 }
 
+int analog_read(CommandRouter *cmd, int argc, const char **argv) {
+  if (argc != 2)
+    return EINVAL;
+
+  uint8_t pin = strtol(argv[1], nullptr, 0);
+  uint8_t value = analogRead(pin);
+
+  snprintf(cmd->buffer, cmd->buffer_size, "%d", value);
+  return 0;
+}
+
 int analog_write_frequency(CommandRouter *cmd, int argc, const char **argv) {
   int pin;
   int frequency;