error cleaning, attach

tinio/tinio.c

@@ -1,8 +1,9 @@
 // TinI/O code rewrite of 2019 - fixing a kid's mistakes
-// This code is licensed under the ISC license
+// This code is licensed under the ISC license, by permission of myself
 #include <stdbool.h>
 #include <assert.h>
 #include "header/CyUSBSerial.h"
+#include <string.h>
 #include <stdio.h>
 #include <stdint.h>
 #include <stdlib.h>
@@ -14,14 +15,21 @@ typedef enum inErr {
   NO_DEVICES
 } inErr;
 
-void cyErrHandler(CY_RETURN_STATUS err);
-void inErrHandler(inErr err);
+void cyErrHandler(CY_RETURN_STATUS err) {
+  if (err == CY_SUCCESS) {
+    return;
+  }
+}
+void inErrHandler(inErr err) {
+  if (err == SUCCESS) {
+    return;
+  }
+}
 
 bool setPin(CY_HANDLE h, int pinNumber, bool value) {
   assert(pinNumber <= 11); // sanity checks, should be sanitized in the parser
   assert(pinNumber >=0);
-  CY_RETURN_STATUS r = CySetGpioValue(h, pinNumber, value);
-  if (r != CY_SUCCESS) cyErrHandler(r);
+  cyErrHandler(CySetGpioValue(h, pinNumber, value));
   return value;
 }
 
@@ -29,8 +37,7 @@ bool getPin(CY_HANDLE h, int pinNumber){
   assert(pinNumber <= 11); // sanity checks, should be sanitized in the parser
   assert(pinNumber >=0);
   uint8_t v;
-  CY_RETURN_STATUS r = CyGetGpioValue(h, pinNumber, &v);
-  if (r != CY_SUCCESS) cyErrHandler(r);
+  cyErrHandler(CyGetGpioValue(h, pinNumber, &v));
   return (bool) v;
 }
 
@@ -43,16 +50,35 @@ bool flpPin(CY_HANDLE h, int pinNumber) {
   return val;
 }
 
-
 void parser(int argc, char **args);
 
-inErr attachHandles() {
-  
+void attachHandles(CY_HANDLE *h) {
+  uint8_t num = 0;
+  cyErrHandler(CyGetListofDevices(&num));
+  assert(num > 0); /* sanity check, no devices should trigger a
+                      CY_ERROR_DEVICE_NOT_FOUND error in cyErrHandler*/
+  CY_DEVICE_INFO deviceInfo[num];
+  for(uint8_t i = num; i >= 0; i--) { // iterate through the device info array
+    /*  Pointer arithmetics: same as &deviceInfo[num] but without an
+        unnecessary reference-to-dereference narrative. Keep it simple, stupid!
+    */
+    cyErrHandler(CyGetDeviceInfo(num, deviceInfo+i)); // fill deviceInfo
+  }
+  /*  at this point, every element of deviceInfo should have a CY_DEVICE_INFO
+      struct inside. */
+  // TODO: assert dis.
+  for (uint8_t i = 0; i < num; i++) {
+    if (strcmp((deviceInfo+i) -> manufacturerName, "tinio")) {
+      cyErrHandler(CyOpen(i, 0, h));
+    }
+  }
+  /*  This abominable trainwreck of a hack needs an explanation. i iterates
+      through the deviceInfo array, until it hits a device with the manufacturer
+      string set to "tinio". It then calls CyOpen on the device. This WILL fail
+      miserably if the device is set to CDC mode, but custom and PHDC work fine.
+  */
+  // TODO: mek dis betr
 }
 
 int main(int argc, char **args){
-  CY_RETURN_STATUS r = CyLibraryInit();
-  if (r != CY_SUCCESS) cyErrHandler(r);
-
-
 }

try.c

@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+int main () {
+  unsigned a = 10;
+  for (a -= 1; a; a--) {
+    printf("%d", a);
+  }
+}