Merge pull request #7141 from kjbracey-arm/kinetis-mem-conf

Kinetis EMAC: Make number of buffers configurable

Author: Cruz Monrreal

features/netsocket/emac-drivers/TARGET_Freescale_EMAC/kinetis_emac.cpp

@@ -55,7 +55,7 @@ uint8_t *rx_desc_start_addr;
 // RX packet buffer pointers
 emac_mem_buf_t *rx_buff[ENET_RX_RING_LEN];
 // TX packet buffer pointers
-emac_mem_buf_t *tx_buff[ENET_RX_RING_LEN];
+emac_mem_buf_t *tx_buff[ENET_TX_RING_LEN];
 // RX packet payload pointers
 uint32_t *rx_ptr[ENET_RX_RING_LEN];
 

features/netsocket/emac-drivers/TARGET_Freescale_EMAC/kinetis_emac_config.h

@@ -32,8 +32,8 @@
 
 #include "fsl_enet.h"
 
-#define ENET_RX_RING_LEN              (16)
-#define ENET_TX_RING_LEN              (8)
+#define ENET_RX_RING_LEN              MBED_CONF_KINETIS_EMAC_RX_RING_LEN
+#define ENET_TX_RING_LEN              MBED_CONF_KINETIS_EMAC_TX_RING_LEN
 
 #define ENET_ETH_MAX_FLEN             (1522) // recommended size for a VLAN frame
 

features/netsocket/emac-drivers/TARGET_Freescale_EMAC/mbed_lib.json

@@ -0,0 +1,7 @@
+{
+    "name": "kinetis-emac",
+    "config": {
+        "rx-ring-len": 16,
+        "tx-ring-len": 8
+    }
+}