Wokring GPIO (ARMmbed#29)

* GPIO port

* fixed hw_types

* delete TODO

* remove ARCM_BASE

* fixed naming issue

* possible fixed for LED3

* working GPIO

* GPIO is working

* add function for gpio_is_connected

targets/TARGET_TI/TARGET_CC32XX/TARGET_CC3220SF/PinNames.h

@@ -113,6 +113,10 @@ typedef enum {
     USBTX = PIN_55,
     USBRX = PIN_57,
 
+    //Button
+    BUTTON1 = PIN_04,
+    BUTTON2 = PIN_15,
+
     // Not connected
     NC = (int)0xFFFFFFFF
 } PinName;

targets/TARGET_TI/TARGET_CC32XX/TARGET_CC3220SF/gpio_api.c

@@ -14,15 +14,14 @@
  * limitations under the License.
  */
 #include "gpio_api.h"
+#include "mbed_error.h"
 #include "pinmap.h"
 #include <ti/devices/cc32xx/inc/hw_types.h>
 #include <ti/devices/cc32xx/driverlib/pin.h>
 #include <ti/devices/cc32xx/driverlib/gpio.h>
 #include <ti/devices/cc32xx/inc/hw_ints.h>
 #include <ti/devices/cc32xx/driverlib/prcm.h>
 
-#define PIN_RESERVED  0xFF
-
 
 
 static const unsigned long g_ulPinToGPIOPinBit[64] =
@@ -79,17 +78,17 @@ static const PinMap PinMap_GPIO[] = {
 
    {PIN_07, CC3220SF_GPIOA2_BASE, 0}, //GPIO_16
    {PIN_08, CC3220SF_GPIOA2_BASE, 0}, //GPIO_17
-   {PIN_RESERVED, CC3220SF_GPIOA2_BASE, 0}, //GPIO_18 (Reserved)
-   {PIN_RESERVED, CC3220SF_GPIOA2_BASE, 0}, //GPIO_19 (Reserved)
-   {PIN_RESERVED, CC3220SF_GPIOA2_BASE, 0}, //GPIO_20 (Reserved)
-   {PIN_RESERVED, CC3220SF_GPIOA2_BASE, 0}, //GPIO_21 (Reserved)
+   //{PIN_RESERVED, CC3220SF_GPIOA2_BASE, 0}, //GPIO_18 (Reserved) No package pin associate with this GPIO
+   //{PIN_RESERVED, CC3220SF_GPIOA2_BASE, 0}, //GPIO_19 (Reserved) No package pin associate with this GPIO
+   //{PIN_RESERVED, CC3220SF_GPIOA2_BASE, 0}, //GPIO_20 (Reserved) No package pin associate with this GPIO
+   //{PIN_RESERVED, CC3220SF_GPIOA2_BASE, 0}, //GPIO_21 (Reserved) No package pin associate with this GPIO
    {PIN_15, CC3220SF_GPIOA2_BASE, 0}, //GPIO_22
    {PIN_16, CC3220SF_GPIOA2_BASE, 0}, //GPIO_23
 
    {PIN_17, CC3220SF_GPIOA3_BASE, 0}, //GPIO_24
    {PIN_21, CC3220SF_GPIOA3_BASE, 0}, //GPIO_25
-   {PIN_RESERVED, CC3220SF_GPIOA3_BASE, 0}, //GPIO_26 (Restricted Use; Antenna Selection 1 Only)
-   {PIN_RESERVED, CC3220SF_GPIOA3_BASE, 0}, //GPIO_27 (Restricted Use; Antenna Selection 1 Only)
+   //{PIN_RESERVED, CC3220SF_GPIOA3_BASE, 0}, //GPIO_26 (Restricted Use; Antenna Selection 1 Only) No package pin associate with this GPIO 
+   //{PIN_RESERVED, CC3220SF_GPIOA3_BASE, 0}, //GPIO_27 (Restricted Use; Antenna Selection 1 Only) No package pin associate with this GPIO
    {PIN_18, CC3220SF_GPIOA3_BASE, 0}, //GPIO_28
    {PIN_20, CC3220SF_GPIOA3_BASE, 0}, //GPIO_29
    {PIN_53, CC3220SF_GPIOA3_BASE, 0}, //GPIO_30 (PM/Dig Mux)
@@ -108,6 +107,7 @@ uint32_t gpio_set(PinName pin)
 // with the object created for the pin
 void gpio_init(gpio_t *obj, PinName pin)
 {
+    MBED_ASSERT(pin != (PinName)NC);
     unsigned long gpio_base = (unsigned long)pinmap_peripheral(pin, PinMap_GPIO);
     obj->gpio_port_base_addr = gpio_base;
     obj->pin = pin;
@@ -151,11 +151,12 @@ void gpio_mode(gpio_t *obj, PinMode mode)
 
 
     if(obj->dir == PIN_INPUT){ //setting the correct input pin mode from STD, PULL_UP, or  PULL_DOWN
-        PinModeSet(obj->pin, inPinTypes[mode]); 
+        PinModeSet(obj->pin, inPinTypes[mode]);
+        pin_mode(obj->pin, mode); 
     }
-    else if(obj->dir == PIN_OUTPUT){ //setting the correct output pin mode from STD, open-drain PULL_UP, or  open drain PULL_DOWN. It seem that Mbed does not have an option for open-drain no pull
+    else if(obj->dir == PIN_OUTPUT){ //setting the correct output pin mode from STD, open-drain PULL_UP, or  open drain PULL_DOWN.
         PinModeSet(obj->pin, outPinTypes[mode]);
-        PinConfigSet(obj->pin,outPinStrengths[0],outPinTypes[mode]);
+        pin_mode(obj->pin, mode);
     } 
 
 }
@@ -168,16 +169,15 @@ void gpio_dir(gpio_t *obj, PinDirection direction)
 
 int gpio_is_connected(const gpio_t *obj)
 {
-    // TODO
-    return 0;
+    return (obj->pin == NC);
 }
 
 void gpio_write(gpio_t *obj, int value)
 {
-    GPIOPinWrite(obj->gpio_port_base_addr, g_ulPinToGPIOPinBit[obj->pin], value<<(g_ulPinToGPIOPinBit[obj->pin]>>1));
+    GPIOPinWrite(obj->gpio_port_base_addr, g_ulPinToGPIOPinBit[obj->pin], value*(g_ulPinToGPIOPinBit[obj->pin]));
 }
 
 int gpio_read(gpio_t *obj)
 {
-    return  (int)GPIOPinRead(obj->gpio_port_base_addr,g_ulPinToGPIOPinBit[obj->pin]);
+    return (GPIOPinRead(obj->gpio_port_base_addr,g_ulPinToGPIOPinBit[obj->pin]) != 0);
 }