From b51fb2210af1b6eb4ee8dbc31f77a14a3f3d5230 Mon Sep 17 00:00:00 2001
From: Nao Pross <naopross@thearcway.org>
Date: Sat, 5 May 2018 17:47:13 +0200
Subject: Add command selection code, note: split() does't work yet

---
 main.cpp | 114 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 104 insertions(+), 10 deletions(-)

(limited to 'main.cpp')

diff --git a/main.cpp b/main.cpp
index 860460c..fec1ba0 100644
--- a/main.cpp
+++ b/main.cpp
@@ -15,8 +15,13 @@
 #include "hal/uart.tpp"
 #include "hal/pin.tpp"
 
+// high level
+#include "led.hpp"
+
 // standard library 
 #include <string>
+#include <vector>
+#include <algorithm>
 
 // microchip libraries
 extern "C" {
@@ -24,34 +29,123 @@ extern "C" {
     // #include <proc/p32mx470f512h.h>
 }
 
+std::vector<std::string> split(const std::string& str, const char sep)
+{
+    std::vector<std::string> v;
+
+    size_t last = 0; 
+    size_t next = 0;
+
+    while ((next = str.find(sep, last)) != std::string::npos) {
+        v.push_back(str.substr(next, next +1));
+        last = next + 1;
+    }
+
+    v.push_back(str.substr(last));
+
+    return v;
+}
+
+void strip(std::string &str)
+{
+    const std::string strip_chars = "\n\r\b\t\f";
 
+    for (const char &ch : strip_chars) {
+        str.erase(std::remove_if(str.begin(), str.end(), [ch](const char &c){ return c == ch; }), str.end());
+    }
+}
 
 int main(int argc, char** argv)
 {
     osc::initialize();
     interrupts::initialize();
+
+    // initialize uart and enable echo
     uart::initialize<1>();
+    uart::echo<1>(true);
+
+    // initialize pin as outputs
+    io_pin<4> led1_pin(&LATEbits, &TRISEbits, &PORTEbits);
+    io_pin<6> led2_pin(&LATEbits, &TRISEbits, &PORTEbits);
+    io_pin<7> led3_pin(&LATEbits, &TRISEbits, &PORTEbits);
 
-    pin<4> led1(&LATEbits, &TRISEbits, &PORTEbits);
-    pin<6> led2(&LATEbits, &TRISEbits, &PORTEbits);
-    pin<7> led3(&LATEbits, &TRISEbits, &PORTEbits);
+    // build leds
+    led led1(static_cast<gpio *>(&led1_pin), led::color::RED);
+    led led2(static_cast<gpio *>(&led2_pin), led::color::GREEN);
+    led led3(static_cast<gpio *>(&led3_pin), led::color::YELLOW);
 
+#ifdef DEBUG
     led1.set(1);
     led2.set(1);
     led3.set(1);
 
     uart::write<1>("started\n\r");
+#endif
     
     while (true) {
+        std::string input = "";
+        
+        // write prompt
+        uart::write<1>("> ");
+
         while (uart::rx_buffer<1>().empty());
-        while (uart::rx_buffer<1>().size() > 0) {
-            char c = uart::read<1>(); 
-            
-            uart::write<1>(c);
-            uart::write<1>("\n\r");
-        }
+        do {
+            input += uart::read_wait<1>();
+        } while (uart::rx_buffer<1>().front() != '\r');
+        // remove '\r' from the RX buffer
+        uart::rx_buffer<1>().pop(); 
+
+#ifdef DEBUG
+        uart::write<1>("\n\rinput: "); 
+        uart::print<1>(input);       
+#endif
+
+        // remove weird symbols
+        strip(input);
+        
+        // split
+        const std::vector<std::string> command = split(input, ' ');
         
-        led1.toggle();
+#ifdef DEBUG
+        for (const std::string &s : command) {
+            uart::print<1>(s);
+        }
+#endif
+
+        if (command.size() == 1) {
+            if (command[0] == "help") {
+                uart::print<1>("TODO: help text");
+            }
+        } else if (command.size() == 3) {
+            if (command[0] == "show") {
+                uart::print<1>(led1.to_string());
+                uart::print<1>(led2.to_string());
+                uart::print<1>(led3.to_string());
+                continue;
+            }
+
+            if (command[0] == "set") {
+                if (command[1] == "baudrate") {
+                    // TODO
+                }
+            }
+        } else if (command.size() == 4) {
+            if (command[0] == "set") {
+                if (command[1] == "led") {
+                    if (command[2] == "red") {
+                        led1.set((command[3] == "on"));
+                    } else if (command[2] == "green") {
+                        led2.set((command[3] == "on"));
+                    } else if (command[2] == "yellow") {
+                        led3.set((command[3] == "on"));
+                    } else if (command[2] == "all") {
+                        led1.set((command[3] == "on"));
+                        led2.set((command[3] == "on"));
+                        led3.set((command[3] == "on"));
+                    }
+                }
+            }
+        }
     }
 
     return 0;
-- 
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