implement radio stub functions and catch up on technical debt (#1763)

examples/platforms/cc2650/crypto/sha256_alt.c

@@ -85,6 +85,8 @@ void mbedtls_sha256_update(mbedtls_sha256_context *ctx, const unsigned char *inp
     SHA256_execute(ctx, (uint8_t *)input, (uint32_t)ilen);
 }
 
+char *workaround_cc2650_rom;
+
 /**
  * documented in sha256_alt.h
  */
@@ -94,10 +96,19 @@ void mbedtls_sha256_finish(mbedtls_sha256_context *ctx, unsigned char output[32]
      * Allocate an extra 64 bytes on the stack to make sure we have buffer
      * room. This could be optomized out if you never call this function with
      * a call stack shorter than 16 words, approx. 8 stack frames.
+     *
+     * The simple description is this:
+     *    If the stack pointer is within 64bytes of the end of RAM
+     *    the bug exposes it self.
+     *    If the stack pointer is more then 64bytes from end of RAM
+     *    There is no bug...
+     * Solution:
+     *    Make a 64byte buffer on the stack..
+     *    And force the compiler to think it requires this buffer.
      */
-    __asm("sub sp, #0x40 ");
+    char buffer[ 64 ];
+    workaround_cc2650_rom = &buffer[0];
     SHA256_output(ctx, (uint8_t *)output);
-    __asm("add sp, #0x40 ");
     return;
 }
 

examples/platforms/cc2650/platform.c

@@ -26,10 +26,13 @@
  *  POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <stdio.h>
 #include <openthread/types.h>
 #include "platform-cc2650.h"
 
-otInstance *sInstance;
+extern const char __ccfg[];
+
+const char *dummy_ccfg_ref = ((const char *)(&(__ccfg[0])));
 
 /**
  * Function documented in platform-cc2650.h
@@ -38,6 +41,16 @@ void PlatformInit(int argc, char *argv[])
 {
     (void) argc;
     (void) argv;
+
+    while (dummy_ccfg_ref == NULL)
+    {
+        /*
+          * This provides a code reference to the customer configuration
+          * area of the flash, otherwise the data is skipped by the
+          * linker and not put into the final flash image.
+          */
+    }
+
     cc2650AlarmInit();
     cc2650RandomInit();
     cc2650RadioInit();
@@ -48,8 +61,6 @@ void PlatformInit(int argc, char *argv[])
  */
 void PlatformProcessDrivers(otInstance *aInstance)
 {
-    sInstance = aInstance;
-
     // should sleep and wait for interrupts here
 
     cc2650UartProcess();

examples/platforms/cc2650/radio.c

@@ -1219,11 +1219,28 @@ exit:
     return error;
 }
 
+/**
+ * Function documented in platform/radio.h
+ */
 void otPlatRadioSetDefaultTxPower(otInstance *aInstance, int8_t aPower)
 {
-    // TODO: Create a proper implementation for this driver.
+    unsigned int i;
+    output_config_t const *powerCfg = &(rgOutputPower[0]);
     (void)aInstance;
-    (void)aPower;
+
+    for (i = 1; i < OUTPUT_CONFIG_COUNT; i++)
+    {
+        if (rgOutputPower[i].dbm >= aPower)
+        {
+            powerCfg = &(rgOutputPower[i]);
+        }
+        else
+        {
+            break;
+        }
+    }
+
+    sCurrentOutputPower = powerCfg;
 }
 
 /**
@@ -1513,7 +1530,25 @@ exit:
 void otPlatRadioClearSrcMatchShortEntries(otInstance *aInstance)
 {
     (void)aInstance;
-    // TODO - This function needs to be implemented
+
+    if (sReceiveCmd.status == ACTIVE || sReceiveCmd.status == IEEE_SUSPENDED)
+    {
+        unsigned int i;
+
+        for (i = 0; i < CC2650_SHORTADD_SRC_MATCH_NUM; i++)
+        {
+            /* we have a running or backgrounded rx command */
+            otEXPECT(rfCoreModifySourceMatchEntry(i, SHORT_ADDRESS, false) == CMDSTA_Done);
+        }
+    }
+    else
+    {
+        /* we are not running, so we can erase them ourselves */
+        memset((void *)&sSrcMatchShortData, 0, sizeof(sSrcMatchShortData));
+    }
+
+exit:
+    return;
 }
 
 /**
@@ -1522,7 +1557,25 @@ void otPlatRadioClearSrcMatchShortEntries(otInstance *aInstance)
 void otPlatRadioClearSrcMatchExtEntries(otInstance *aInstance)
 {
     (void)aInstance;
-    // TODO - This function needs to be implemented
+
+    if (sReceiveCmd.status == ACTIVE || sReceiveCmd.status == IEEE_SUSPENDED)
+    {
+        unsigned int i;
+
+        for (i = 0; i < CC2650_EXTADD_SRC_MATCH_NUM; i++)
+        {
+            /* we have a running or backgrounded rx command */
+            otEXPECT(rfCoreModifySourceMatchEntry(i, EXT_ADDRESS, false) == CMDSTA_Done);
+        }
+    }
+    else
+    {
+        /* we are not running, so we can erase them ourselves */
+        memset((void *)&sSrcMatchExtData, 0, sizeof(sSrcMatchExtData));
+    }
+
+exit:
+    return;
 }
 
 /**

examples/platforms/cc2650/random.c

@@ -135,18 +135,3 @@ exit:
     return error;
 }
 
-/**
- * Entropy function for the entropy pool in mbedtls.
- *
- * Function defined in mbedtls/entropy_poll.h .
- */
-int mbedtls_hardware_poll(void *data, unsigned char *aOutput, size_t aLen, size_t *oLen)
-{
-    ThreadError error;
-
-    (void)data;
-    error = TRNGPoll(aOutput, aLen);
-    *oLen = aLen;
-
-    return error;
-}