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component/common/mbed/targets/hal/rtl8195a/port_api.c

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+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2014, Realtek Semiconductor Corp.
+ * All rights reserved.
+ *
+ * This module is a confidential and proprietary property of RealTek and
+ * possession or use of this module requires written permission of RealTek.
+ *******************************************************************************
+ */
+#include "objects.h"
+#include "port_api.h"
+#include "pinmap.h"
+#include "gpio_api.h"
+#include "PinNames.h"
+//#include "mbed_error.h"
+
+#if CONFIG_GPIO_EN
+
+#if DEVICE_PORTIN || DEVICE_PORTOUT
+
+#define GPIO_PORT_NUM       3
+#define GPIO_PORT_WIDTH     32
+#define GPIO_PORT_WIDTH_MAX     32
+
+const u8 Default_Port_PinDef[GPIO_PORT_NUM][GPIO_PORT_WIDTH+1] = {
+    // Port 0 has these pin:
+    {PA_0, PA_1, PB_3, PB_4,
+     PB_6, PB_7, PC_1, PC_3,
+     PC_4, PC_5, PC_6, PC_7,
+     PC_8, PC_9, PD_1, PD_3,
+     PD_4, PD_5, PD_6, PD_7,
+     PD_9, PE_1, PE_2, PE_3,
+     PE_5, PE_6, PE_7, PE_8,
+     PG_3, PH_1, PH_3, PH_5,
+     0xFF},
+
+    // Port 1
+    {PA_2, PA_3, PA_4, PA_5,
+     PA_6, PA_7, PB_0, PB_1,
+     PB_2, PB_5, PC_0, PC_2,
+     PD_0, PD_2, PD_8, PE_0,
+     PE_4, PE_9, PE_A, PF_0,
+     PF_1, PF_2, PF_3, PF_4,
+     PF_5, PG_0, PG_1, PG_2,
+     PG_4, PG_5, PG_6, PG_7,
+     0xFF},
+
+    // Port 2
+    {PH_0, PH_2, PH_4, PH_6,
+     PH_7, PI_0, PI_1, PI_2,
+     PI_3, PI_4, PI_5, PI_6,
+     PI_7, PJ_0, PJ_1, PJ_2,
+     PJ_3, PJ_4, PJ_5, PJ_6,
+     PK_0, PK_1, PK_2, PK_3,
+     PK_4, PK_5, PK_6, 
+     0xFF}
+     
+};
+
+extern const u8 GPIO_SWPORT_DR_TBL[];
+extern const u8 GPIO_EXT_PORT_TBL[];
+
+extern  VOID HAL_GPIO_Init(HAL_GPIO_PIN  *GPIO_Pin);
+extern u32 HAL_GPIO_GetPinName(u32 chip_pin);
+
+// high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
+// low nibble  = pin number
+PinName port_pin(PortName port, int pin_n) {
+    return (PinName)(pin_n + (port << 4));
+}
+
+void port_init(port_t *obj, PortName port, int mask, PinDirection dir) 
+{
+    u32 i;
+
+    if (port >= GPIO_PORT_NUM) {
+        DBG_GPIO_ERR("port_init: Invalid port num(%d), max port num is %d\r\n", \
+            port, (GPIO_PORT_NUM-1));
+    }
+    
+    // Fill PORT object structure for future use
+    obj->port      = port;
+    obj->mask      = mask;
+    obj->direction = dir;
+
+    if (obj->pin_def == NULL) {
+        DBG_GPIO_ERR("Port Define Table isn't assigned\n");
+        obj->pin_def = (uint8_t*)&Default_Port_PinDef[port][0];
+    }
+
+    i=0;
+    while (obj->pin_def[i] != 0xff) {        
+        i++;
+        if (i == GPIO_PORT_WIDTH_MAX) {
+            break;
+        }
+    }
+
+    obj->mask &= ((1<<i) - 1);
+    port_dir(obj, dir);
+}
+
+void port_dir(port_t *obj, PinDirection dir) 
+{
+    uint32_t i;
+    HAL_GPIO_PIN GPIO_Pin;
+    
+    obj->direction = dir;
+    for (i = 0; i < GPIO_PORT_WIDTH_MAX; i++) { // Process all pins
+        if (obj->pin_def[i] == 0xff) {
+            // end of table
+            break;
+        }
+        if (obj->mask & (1 << i)) { // If the pin is used
+
+            GPIO_Pin.pin_name = HAL_GPIO_GetPinName(obj->pin_def[i]); // get the IP pin name
+            
+            if (dir == PIN_OUTPUT) {
+                GPIO_Pin.pin_mode = DOUT_PUSH_PULL;
+            } else { // PIN_INPUT
+                GPIO_Pin.pin_mode = DIN_PULL_NONE;
+            }
+            HAL_GPIO_Init(&GPIO_Pin);
+        }
+    }
+}
+
+void port_mode(port_t *obj, PinMode mode) 
+{
+    uint32_t i;
+    
+    for (i = 0; i < GPIO_PORT_WIDTH_MAX; i++) { // Process all pins
+        if (obj->pin_def[i] == 0xff) {
+            // end of table
+            break;
+        }
+        if (obj->mask & (1 << i)) { // If the pin is used
+            pin_mode(obj->pin_def[i], mode);
+        }
+    }
+}
+
+void port_write(port_t *obj, int value) 
+{
+    uint32_t i;
+    uint32_t pin_name;
+    uint8_t port_num;
+    uint8_t pin_num;
+    uint32_t hal_port[3];
+    uint8_t port_changed[3];
+
+    for (i=0;i<3;i++) {
+        hal_port[i] =  HAL_READ32(GPIO_REG_BASE, GPIO_SWPORT_DR_TBL[i]);
+        port_changed[i] = 0;
+    }
+    
+    for (i = 0; i < GPIO_PORT_WIDTH_MAX; i++) { // Process all pins
+        if (obj->pin_def[i] == 0xff) {
+            // end of table
+            break;
+        }
+        if (obj->mask & (1 << i)) { // If the pin is used
+            pin_name = HAL_GPIO_GetPinName(obj->pin_def[i]); // get the IP pin name
+            port_num = HAL_GPIO_GET_PORT_BY_NAME(pin_name);
+            pin_num = HAL_GPIO_GET_PIN_BY_NAME(pin_name);
+            hal_port[port_num] &= ~(1 << pin_num);
+            hal_port[port_num] |= (((value>>i) & 0x01)<< pin_num);
+            port_changed[port_num] = 1;
+        }
+    }
+
+    for (i=0;i<3;i++) {
+        if (port_changed[i]) {
+            HAL_WRITE32(GPIO_REG_BASE, GPIO_SWPORT_DR_TBL[i], hal_port[i]);
+        }
+    }
+    
+}
+
+int port_read(port_t *obj) 
+{
+    int value=0;
+    u32 i;
+    uint32_t pin_name;
+    uint8_t port_num;
+    uint8_t pin_num;
+    uint32_t hal_port[3];
+
+    for (i=0;i<3;i++) {
+        hal_port[i] =  HAL_READ32(GPIO_REG_BASE, GPIO_EXT_PORT_TBL[i]);
+    }
+
+    for (i = 0; i < GPIO_PORT_WIDTH_MAX; i++) { // Process all pins
+        if (obj->pin_def[i] == 0xff) {
+            // end of table
+            break;
+        }
+        if (obj->mask & (1 << i)) { // If the pin is used
+            pin_name = HAL_GPIO_GetPinName(obj->pin_def[i]); // get the IP pin name
+            port_num = HAL_GPIO_GET_PORT_BY_NAME(pin_name);
+            pin_num = HAL_GPIO_GET_PIN_BY_NAME(pin_name);
+            if (hal_port[port_num] & (1<<pin_num)) {
+                value |= (1<<i);
+            }
+        }
+    }
+
+    return value;
+}
+
+#endif
+#endif