diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/altera-cyclone-v/hwlib/src/hwmgr/alt_generalpurpose_io.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/altera-cyclone-v/hwlib/src/hwmgr/alt_generalpurpose_io.c | 777 |
1 files changed, 0 insertions, 777 deletions
diff --git a/c/src/lib/libbsp/arm/altera-cyclone-v/hwlib/src/hwmgr/alt_generalpurpose_io.c b/c/src/lib/libbsp/arm/altera-cyclone-v/hwlib/src/hwmgr/alt_generalpurpose_io.c deleted file mode 100644 index b52e5002a3..0000000000 --- a/c/src/lib/libbsp/arm/altera-cyclone-v/hwlib/src/hwmgr/alt_generalpurpose_io.c +++ /dev/null @@ -1,777 +0,0 @@ -/****************************************************************************** -* -* Copyright 2013 Altera Corporation. All Rights Reserved. -* -* Redistribution and use in source and binary forms, with or without -* modification, are permitted provided that the following conditions are met: -* -* 1. Redistributions of source code must retain the above copyright notice, -* this list of conditions and the following disclaimer. -* -* 2. Redistributions in binary form must reproduce the above copyright notice, -* this list of conditions and the following disclaimer in the documentation -* and/or other materials provided with the distribution. -* -* 3. The name of the author may not be used to endorse or promote products -* derived from this software without specific prior written permission. -* -* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY EXPRESS OR -* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF -* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED. IN NO -* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, -* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT -* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN -* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING -* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY -* OF SUCH DAMAGE. -* -******************************************************************************/ - -#include <stdint.h> -#include <stdlib.h> -#include <stdbool.h> - -#include <bsp/socal/hps.h> -#include <bsp/socal/socal.h> -#include <bsp/socal/alt_gpio.h> -#include <bsp/socal/alt_rstmgr.h> -#include <bsp/hwlib.h> -#include <bsp/alt_generalpurpose_io.h> - - -/****************************************************************************************/ -/******************************* Useful local definitions *******************************/ -/****************************************************************************************/ - -#define ALT_GPIO_EOPA ALT_GPIO_1BIT_28 -#define ALT_GPIO_EOPB ALT_GPIO_1BIT_57 -#define ALT_GPIO_EOPC ALT_HLGPI_15 -#define ALT_GPIO_BITMASK 0x1FFFFFFF - - // expands the zero or one bit to the 29-bit GPIO word -#define ALT_GPIO_ALLORNONE(tst) ((uint32_t) ((tst == 0) ? 0 : ALT_GPIO_BITMASK)) - - -/****************************************************************************************/ -/* alt_gpio_init() initializes the GPIO modules */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_init(void) -{ - // put GPIO modules into system manager reset if not already there - alt_gpio_uninit(); - // release GPIO modules from system reset (w/ two-instruction delay) - alt_replbits_word(ALT_RSTMGR_PERMODRST_ADDR, ALT_RSTMGR_PERMODRST_GPIO0_SET_MSK | - ALT_RSTMGR_PERMODRST_GPIO1_SET_MSK | - ALT_RSTMGR_PERMODRST_GPIO2_SET_MSK, 0); - return ALT_E_SUCCESS; -} - - -/****************************************************************************************/ -/* alt_gpio_uninit() uninitializes the GPIO modules */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_uninit(void) -{ - // put all GPIO modules into system manager reset - alt_replbits_word(ALT_RSTMGR_PERMODRST_ADDR, ALT_RSTMGR_PERMODRST_GPIO0_SET_MSK | - ALT_RSTMGR_PERMODRST_GPIO1_SET_MSK | - ALT_RSTMGR_PERMODRST_GPIO2_SET_MSK, - ALT_GPIO_BITMASK); - return ALT_E_SUCCESS; -} - - -/****************************************************************************************/ -/* alt_gpio_port_datadir_set() sets the specified GPIO data bits to use the data */ -/* direction(s) specified. 0 = input (default). 1 = output. */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_port_datadir_set(ALT_GPIO_PORT_t gpio_pid, - uint32_t mask, uint32_t config) -{ - volatile uint32_t *addr; - - if ((mask & ~ALT_GPIO_BITMASK) || (config & ~ALT_GPIO_BITMASK)) { return ALT_E_ERROR; } - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_SWPORTA_DDR_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_SWPORTA_DDR_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_SWPORTA_DDR_ADDR; } - else { return ALT_E_BAD_ARG; } - - alt_replbits_word(addr, mask, config); - return ALT_E_SUCCESS; -} - - -/****************************************************************************************/ -/* alt_gpio_port_datadir_get() returns the data direction configuration of selected */ -/* bits of the designated GPIO module. */ -/****************************************************************************************/ - -uint32_t alt_gpio_port_datadir_get(ALT_GPIO_PORT_t gpio_pid, - uint32_t mask) -{ - volatile uint32_t *addr; - - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_SWPORTA_DDR_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_SWPORTA_DDR_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_SWPORTA_DDR_ADDR; } - else { return 0; } - - return alt_read_word(addr) & mask; -} - - -/****************************************************************************************/ -/* alt_gpio_port_data_write() sets the GPIO data outputs of the specified GPIO module */ -/* to a one or zero. Actual outputs are only set if the data direction for that bit(s) */ -/* has previously been set to configure them as output(s). */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_port_data_write(ALT_GPIO_PORT_t gpio_pid, - uint32_t mask, uint32_t val) -{ - volatile uint32_t *addr; - - if ((mask & ~ALT_GPIO_BITMASK) || (val & ~ALT_GPIO_BITMASK)) { return ALT_E_ERROR; } - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_SWPORTA_DR_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_SWPORTA_DR_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_SWPORTA_DR_ADDR; } - else { return ALT_E_BAD_ARG; } - - alt_replbits_word(addr, mask, val); - return ALT_E_SUCCESS; -} - - -/****************************************************************************************/ -/* alt_gpio_port_data_read() returns the value of the data inputs of the specified */ -/* GPIO module. Data direction for these bits must have been previously set to inputs. */ -/****************************************************************************************/ - -#if (!ALT_GPIO_DATAREAD_TEST_MODE) - /* This is the production code version. For software unit testing, set the */ - /* ALT_GPIO_DATAREAD_TEST_MODE flag to true in the makefile, which will compile */ - /* the GPIO test software version of alt_gpio_port_data_read() instead. */ - -uint32_t alt_gpio_port_data_read(ALT_GPIO_PORT_t gpio_pid, uint32_t mask) -{ - volatile uint32_t *addr; - - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_EXT_PORTA_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_EXT_PORTA_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_EXT_PORTA_ADDR; } - else { return 0; } - - return alt_read_word(addr) & mask; -} -#endif - - -/****************************************************************************************/ -/* alt_gpio_port_int_type_set() sets selected signals of the specified GPIO port to */ -/* be either level-sensitive ( =0) or edge-triggered ( =1). */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_port_int_type_set(ALT_GPIO_PORT_t gpio_pid, - uint32_t mask, uint32_t config) -{ - volatile uint32_t *addr; - - if ((mask & ~ALT_GPIO_BITMASK) || (config & ~ALT_GPIO_BITMASK)) { return ALT_E_ERROR; } - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_INTTYPE_LEVEL_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_INTTYPE_LEVEL_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_INTTYPE_LEVEL_ADDR; } - else { return ALT_E_BAD_ARG; } - - alt_replbits_word(addr, mask, config); - return ALT_E_SUCCESS; -} - - -/****************************************************************************************/ -/* alt_gpio_port_int_type_get() returns the interrupt configuration (edge-triggered or */ -/* level-triggered) for the specified signals of the specified GPIO module. */ -/****************************************************************************************/ - -uint32_t alt_gpio_port_int_type_get(ALT_GPIO_PORT_t gpio_pid, - uint32_t mask) -{ - volatile uint32_t *addr; - - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_INTTYPE_LEVEL_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_INTTYPE_LEVEL_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_INTTYPE_LEVEL_ADDR; } - else { return 0; } - - return alt_read_word(addr) & mask; -} - - -/****************************************************************************************/ -/* alt_gpio_port_int_pol_set() sets the interrupt polarity of the signals of the */ -/* specified GPIO register (when used as inputs) to active-high ( =0) or active-low */ -/* ( =1). */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_port_int_pol_set(ALT_GPIO_PORT_t gpio_pid, - uint32_t mask, uint32_t config) -{ - volatile uint32_t *addr; - - if ((mask & ~ALT_GPIO_BITMASK) || (config & ~ALT_GPIO_BITMASK)) { return ALT_E_ERROR; } - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_INT_POL_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_INT_POL_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_INT_POL_ADDR; } - else { return ALT_E_BAD_ARG; } - - alt_replbits_word(addr, mask, config); - return ALT_E_SUCCESS; -} - - -/****************************************************************************************/ -/* alt_gpio_port_int_pol_get() returns the active-high or active-low polarity */ -/* configuration for the possible interrupt sources of the specified GPIO module. */ -/* 0 = The interrupt polarity for this bit is set to active-low mode. 1 = The */ -/* interrupt polarity for this bit is set to active-highmode. */ -/****************************************************************************************/ - -uint32_t alt_gpio_port_int_pol_get(ALT_GPIO_PORT_t gpio_pid, - uint32_t mask) -{ - volatile uint32_t *addr; - - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_INT_POL_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_INT_POL_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_INT_POL_ADDR; } - else { return 0; } - - return alt_read_word(addr) & mask; -} - - -/****************************************************************************************/ -/* alt_gpio_port_debounce_set() sets the debounce configuration for input signals of */ -/* the specified GPIO module. 0 - Debounce is not selected for this signal (default). */ -/* 1 - Debounce is selected for this signal. */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_port_debounce_set(ALT_GPIO_PORT_t gpio_pid, - uint32_t mask, uint32_t config) -{ - volatile uint32_t *addr; - - if ((mask & ~ALT_GPIO_BITMASK) || (config & ~ALT_GPIO_BITMASK)) { return ALT_E_ERROR; } - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_DEBOUNCE_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_DEBOUNCE_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_DEBOUNCE_ADDR; } - else { return ALT_E_BAD_ARG; } - - alt_replbits_word(addr, mask, config); - return ALT_E_SUCCESS; -} - - -/****************************************************************************************/ -/* alt_gpio_port_debounce_get() returns the debounce configuration for the input */ -/* signals of the specified GPIO register. 0 - Debounce is not selected for this */ -/* signal. 1 - Debounce is selected for this signal. */ -/****************************************************************************************/ - -uint32_t alt_gpio_port_debounce_get(ALT_GPIO_PORT_t gpio_pid, - uint32_t mask) -{ - volatile uint32_t *addr; - - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_DEBOUNCE_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_DEBOUNCE_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_DEBOUNCE_ADDR; } - else { return 0; } - - return alt_read_word(addr) & mask; -} - - -/****************************************************************************************/ -/* alt_gpio_port_sync_set() sets the synchronization configuration for the signals of */ -/* the specified GPIO register. This allows for synchronizing level-sensitive */ -/* interrupts to the internal clock signal. This is a port-wide option that controls */ -/* all level-sensitive interrupt signals of that GPIO port. */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_port_sync_set(ALT_GPIO_PORT_t gpio_pid, uint32_t config) -{ - volatile uint32_t *addr; - - config = (config != 0) ? 1 : 0; - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_LS_SYNC_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_LS_SYNC_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_LS_SYNC_ADDR; } - else { return ALT_E_BAD_ARG; } - - alt_write_word(addr, config); - return ALT_E_SUCCESS; -} - - -/****************************************************************************************/ -/* alt_gpio_port_sync_get() returns the synchronization configuration for the signals */ -/* of the specified GPIO register. This allows for synchronizing level-sensitive */ -/* interrupts to the internal clock signal. This is a port-wide option that controls */ -/* all level-sensitive interrupt signals of that GPIO port. */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_port_sync_get(ALT_GPIO_PORT_t gpio_pid) -{ - volatile uint32_t *addr; - - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_LS_SYNC_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_LS_SYNC_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_LS_SYNC_ADDR; } - else { return ALT_E_BAD_ARG; } // error - - return (alt_read_word(addr) != 0) ? ALT_E_TRUE : ALT_E_FALSE; -} - - -/****************************************************************************************/ -/* alt_gpio_port_config() configures a group of GPIO signals with the same parameters. */ -/* Allows for configuring all parameters of a given port at one time. */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_port_config(ALT_GPIO_PORT_t gpio_pid, - uint32_t mask, ALT_GPIO_PIN_DIR_t dir, ALT_GPIO_PIN_TYPE_t type, - ALT_GPIO_PIN_POL_t pol, ALT_GPIO_PIN_DEBOUNCE_t debounc, - uint32_t data) -{ - ALT_STATUS_CODE ret; - - // set all affected GPIO bits to inputs - ret = alt_gpio_port_datadir_set(gpio_pid, mask, ALT_GPIO_ALLORNONE(ALT_GPIO_PIN_INPUT)); - // the ALT_GPIO_ALLORNONE() macro expands the zero or one bit to the 29-bit GPIO word - - // set trigger type - if (ret == ALT_E_SUCCESS) - { - ret = alt_gpio_port_int_type_set(gpio_pid, mask, ALT_GPIO_ALLORNONE(type)); - } - - // set polarity - if (ret == ALT_E_SUCCESS) - { - alt_gpio_port_int_pol_set(gpio_pid, mask, ALT_GPIO_ALLORNONE(pol)); - } - - // set debounce - if (ret == ALT_E_SUCCESS) - { - alt_gpio_port_debounce_set(gpio_pid, mask, ALT_GPIO_ALLORNONE(debounc)); - } - - // set data output(s) - if (ret == ALT_E_SUCCESS) - { - alt_gpio_port_data_write(gpio_pid, mask, ALT_GPIO_ALLORNONE(data)); - } - - if (ret == ALT_E_SUCCESS) - { - // set data direction of one or more bits to select output - ret = alt_gpio_port_datadir_set(gpio_pid, mask, ALT_GPIO_ALLORNONE(dir)); - } - - return ret; -} - - -/****************************************************************************************/ -/* Enables the specified GPIO data register interrupts. */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_port_int_enable(ALT_GPIO_PORT_t gpio_pid, uint32_t config) -{ - volatile uint32_t *addr; - - if (config & ~ALT_GPIO_BITMASK) { return ALT_E_ERROR; } - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_INTEN_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_INTEN_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_INTEN_ADDR; } - else { return ALT_E_BAD_ARG; } - - alt_replbits_word(addr, config, UINT32_MAX); - return ALT_E_SUCCESS; -} - - -/****************************************************************************************/ -/* Disables the specified GPIO data module interrupts. */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_port_int_disable(ALT_GPIO_PORT_t gpio_pid, uint32_t config) -{ - volatile uint32_t *addr; - - if (config & ~ALT_GPIO_BITMASK) { return ALT_E_ERROR; } - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_INTEN_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_INTEN_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_INTEN_ADDR; } - else { return ALT_E_BAD_ARG; } - - alt_replbits_word(addr, config, 0); - return ALT_E_SUCCESS; -} - - - -/****************************************************************************************/ -/* Get the current state of the specified GPIO port interrupts enables. */ -/****************************************************************************************/ - -uint32_t alt_gpio_port_int_enable_get(ALT_GPIO_PORT_t gpio_pid) -{ - volatile uint32_t *addr; - - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_INTEN_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_INTEN_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_INTEN_ADDR; } - else { return 0; } - - return alt_read_word(addr); -} - - -/****************************************************************************************/ -/* Masks or unmasks selected interrupt source bits of the data register of the */ -/* specified GPIO module. Uses a second bit mask to determine which signals may be */ -/* changed by this call. */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_port_int_mask_set(ALT_GPIO_PORT_t gpio_pid, - uint32_t mask, uint32_t val) -{ - volatile uint32_t *addr; - - if ((mask & ~ALT_GPIO_BITMASK) || (val & ~ALT_GPIO_BITMASK)) { return ALT_E_ERROR; } - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_INTMSK_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_INTMSK_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_INTMSK_ADDR; } - else { return ALT_E_BAD_ARG; } // argument error - - alt_replbits_word(addr, mask, val); - return ALT_E_SUCCESS; -} - - -/****************************************************************************************/ -/* Returns the interrupt source mask of the specified GPIO module. */ -/****************************************************************************************/ - -uint32_t alt_gpio_port_int_mask_get(ALT_GPIO_PORT_t gpio_pid) -{ - volatile uint32_t *addr; - - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_INTMSK_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_INTMSK_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_INTMSK_ADDR; } - else { return 0; } // error - - return alt_read_word(addr); -} - - -/****************************************************************************************/ -/* alt_gpio_port_int_status_get() returns the interrupt pending status of all signals */ -/* of the specified GPIO register. */ -/****************************************************************************************/ - -uint32_t alt_gpio_port_int_status_get(ALT_GPIO_PORT_t gpio_pid) -{ - volatile uint32_t *addr; - - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_INTSTAT_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_INTSTAT_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_INTSTAT_ADDR; } - else { return 0; } // error - - return alt_read_word(addr); -} - - -/****************************************************************************************/ -/* Clear the interrupt pending status of selected signals of the specified GPIO */ -/* register. */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_port_int_status_clear(ALT_GPIO_PORT_t gpio_pid, - uint32_t clrmask) -{ - volatile uint32_t *addr; - - if (clrmask & ~ALT_GPIO_BITMASK) { return ALT_E_ERROR; } - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_INTSTAT_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_INTSTAT_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_INTSTAT_ADDR; } - else { return ALT_E_BAD_ARG; } // argument error - - alt_write_word(addr, clrmask); - return ALT_E_SUCCESS; -} - - -/****************************************************************************************/ -/* alt_gpio_port_idcode_get() returns the ID code of the specified GPIO module. */ -/****************************************************************************************/ - -uint32_t alt_gpio_port_idcode_get(ALT_GPIO_PORT_t gpio_pid) -{ - volatile uint32_t *addr; - - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_ID_CODE_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_ID_CODE_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_ID_CODE_ADDR; } - else { return 0; } - - return alt_read_word(addr); -} - - -/****************************************************************************************/ -/* alt_gpio_port_ver_get() returns the version code of the specified GPIO module. */ -/****************************************************************************************/ - -uint32_t alt_gpio_port_ver_get(ALT_GPIO_PORT_t gpio_pid) -{ - volatile uint32_t *addr; - - if (gpio_pid == ALT_GPIO_PORTA) { addr = ALT_GPIO0_VER_ID_CODE_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTB) { addr = ALT_GPIO1_VER_ID_CODE_ADDR; } - else if (gpio_pid == ALT_GPIO_PORTC) { addr = ALT_GPIO2_VER_ID_CODE_ADDR; } - else { return 0; } - - return alt_read_word(addr); -} - - -/****************************************************************************************/ -/* alt_gpio_bit_config() configures one bit (signal) of the GPIO ports. */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_bit_config(ALT_GPIO_1BIT_t signal_num, - ALT_GPIO_PIN_DIR_t dir, ALT_GPIO_PIN_TYPE_t type, - ALT_GPIO_PIN_POL_t pol, ALT_GPIO_PIN_DEBOUNCE_t debounce, - ALT_GPIO_PIN_DATA_t data) -{ - ALT_GPIO_PORT_t pid; - uint32_t mask; - - pid = alt_gpio_bit_to_pid(signal_num); - mask = 0x1 << alt_gpio_bit_to_port_pin(signal_num); - return alt_gpio_port_config(pid, mask, dir, type, pol, debounce, data); -} - - -/****************************************************************************************/ -/* Returns the configuration parameters of a given GPIO bit. */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_bitconfig_get(ALT_GPIO_1BIT_t signal_num, - ALT_GPIO_CONFIG_RECORD_t *config) -{ - ALT_STATUS_CODE ret = ALT_E_ERROR; - ALT_GPIO_PORT_t pid; - uint32_t mask, shift; - - if ((config != NULL) && (signal_num != ALT_END_OF_GPIO_SIGNALS) && (signal_num <= ALT_LAST_VALID_GPIO_BIT)) - { - pid = alt_gpio_bit_to_pid(signal_num); - shift = alt_gpio_bit_to_port_pin(signal_num); - if ((pid != ALT_GPIO_PORT_UNKNOWN) && (shift <= ALT_GPIO_BIT_MAX)) - { - config->signal_number = signal_num; - mask = 0x00000001 << shift; - config->direction = (alt_gpio_port_datadir_get(pid, mask) == 0) ? ALT_GPIO_PIN_INPUT : ALT_GPIO_PIN_OUTPUT; - config->type = (alt_gpio_port_int_type_get(pid, mask) == 0) ? ALT_GPIO_PIN_LEVEL_TRIG_INT : ALT_GPIO_PIN_EDGE_TRIG_INT; - - // save the following data whatever the state of config->direction - config->polarity = (alt_gpio_port_int_pol_get(pid, mask) == 0) ? ALT_GPIO_PIN_ACTIVE_LOW : ALT_GPIO_PIN_ACTIVE_HIGH; - config->debounce = (alt_gpio_port_debounce_get(pid, mask) == 0) ? ALT_GPIO_PIN_NODEBOUNCE : ALT_GPIO_PIN_DEBOUNCE; - config->data = (alt_gpio_port_data_read(pid, mask) == 0) ? ALT_GPIO_PIN_DATAZERO : ALT_GPIO_PIN_DATAONE; - ret = ALT_E_SUCCESS; - } - } - return ret; -} - - -/****************************************************************************************/ -/* alt_gpio_group_config() configures a list of GPIO bits. The GPIO bits do not have */ -/* to be configured the same, as was the case for the mask version of this function, */ -/* alt_gpio_port_config(). Each bit may be configured differently and bits may be */ -/* listed in any order. */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_group_config(ALT_GPIO_CONFIG_RECORD_t* config_array, uint32_t len) -{ - ALT_STATUS_CODE ret = ALT_E_ERROR; - - if (config_array != NULL) - { - if (config_array->signal_number == ALT_END_OF_GPIO_SIGNALS) { ret = ALT_E_SUCCESS; } - // catches the condition where the pointers are good, but the - // first index is the escape character - which isn't an error - else - { - for (; (len-- > 0) && (config_array->signal_number != ALT_END_OF_GPIO_SIGNALS) && (config_array != NULL); config_array++) - { - ret = alt_gpio_bit_config(config_array->signal_number, - config_array->direction, config_array->type, config_array->polarity, - config_array->debounce, config_array->data); - if ((config_array->direction == ALT_GPIO_PIN_OUTPUT) && (ret == ALT_E_SUCCESS)) - { - // if the pin is set to be an output, set it to the correct value - alt_gpio_port_data_write(alt_gpio_bit_to_pid(config_array->signal_number), - 0x1 << alt_gpio_bit_to_port_pin(config_array->signal_number), - ALT_GPIO_ALLORNONE(config_array->data)); - // ret should retain the value returned by alt_gpio_bit_config() above - // and should not be changed by the alt_gpio_port_data_write() call. - } - if (((ret != ALT_E_SUCCESS) && (config_array->signal_number <= ALT_LAST_VALID_GPIO_BIT)) - || ((ret == ALT_E_SUCCESS) && (config_array->signal_number > ALT_LAST_VALID_GPIO_BIT))) - { - ret = ALT_E_ERROR; - break; - } - } - } - } - return ret; -} - - -/****************************************************************************************/ -/* Returns a list of the pin signal indices and the associated configuration settings */ -/* (data direction, interrupt type, polarity, debounce, and synchronization) of that */ -/* list of signals. Only the signal indices in the first field of each configuration */ -/* record need be filled in. This function will fill in all the other fields of the */ -/* configuration record, returning all configuration parameters in the array. A signal */ -/* number index in the array equal to ALT_END_OF_GPIO_SIGNALS (-1) also terminates the */ -/* function. */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_group_config_get(ALT_GPIO_CONFIG_RECORD_t *config_array, - uint32_t len) -{ - ALT_STATUS_CODE ret = ALT_E_ERROR; - - if ((config_array != NULL) && (config_array->signal_number == ALT_END_OF_GPIO_SIGNALS)) - { - ret = ALT_E_SUCCESS; - } - else - { - for ( ; (len > 0) && (config_array != NULL) && (config_array->signal_number != ALT_END_OF_GPIO_SIGNALS) - && (config_array->signal_number <= ALT_LAST_VALID_GPIO_BIT); len--) - { - ret = alt_gpio_bitconfig_get(config_array->signal_number, config_array); - config_array++; - if (ret != ALT_E_SUCCESS) { break; } - } - } - return ret; -} - -/****************************************************************************************/ -/* Another way to return a configuration list. The difference between this version and */ -/* alt_gpio_group_config_get() is that this version follows a separate list of signal */ -/* indices instead of having the signal list provided in the first field of the */ -/* configuration records in the array. This function will fill in the fields of the */ -/* configuration record, returning all configuration parameters in the array. A signal */ -/* number index in the array equal to ALT_END_OF_GPIO_SIGNALS (-1) also terminates */ -/* operation. */ -/****************************************************************************************/ - -ALT_STATUS_CODE alt_gpio_group_config_get2(ALT_GPIO_1BIT_t* pinid_array, - ALT_GPIO_CONFIG_RECORD_t *config_array, uint32_t len) -{ - ALT_STATUS_CODE ret = ALT_E_ERROR; - - if ((config_array != NULL) && (pinid_array != NULL) && (*pinid_array == ALT_END_OF_GPIO_SIGNALS)) - { - ret = ALT_E_SUCCESS; - // catches the condition where the pointers are good, but the - // first index is the escape character - which isn't an error - } - else - { - for ( ;(len > 0) && (pinid_array != NULL) && (*pinid_array != ALT_END_OF_GPIO_SIGNALS) && (config_array != NULL); len--) - { - ret = alt_gpio_bitconfig_get(*pinid_array, config_array); - config_array++; - pinid_array++; - if (ret != ALT_E_SUCCESS) { break; } - } - } - return ret; -} - - -/****************************************************************************************/ -/* A useful utility function. Extracts the GPIO port ID from the supplied GPIO Signal */ -/* Index Number. */ -/****************************************************************************************/ - -ALT_GPIO_PORT_t alt_gpio_bit_to_pid(ALT_GPIO_1BIT_t pin_num) -{ - ALT_GPIO_PORT_t pid = ALT_GPIO_PORT_UNKNOWN; - - if (pin_num <= ALT_GPIO_EOPA) { pid = ALT_GPIO_PORTA; } - else if (pin_num <= ALT_GPIO_EOPB) { pid = ALT_GPIO_PORTB; } - else if (pin_num <= ALT_GPIO_EOPC) { pid = ALT_GPIO_PORTC; } - return pid; -} - - -/****************************************************************************************/ -/* A useful utility function. Extracts the GPIO signal (pin) mask from the supplied */ -/* GPIO Signal Index Number. */ -/****************************************************************************************/ - -ALT_GPIO_PORTBIT_t alt_gpio_bit_to_port_pin(ALT_GPIO_1BIT_t pin_num) -{ - if (pin_num <= ALT_GPIO_EOPA) {} - else if (pin_num <= ALT_GPIO_EOPB) { pin_num -= (ALT_GPIO_EOPA + 1); } - else if (pin_num <= ALT_GPIO_EOPC) { pin_num -= (ALT_GPIO_EOPB + 1); } - else { return ALT_END_OF_GPIO_PORT_SIGNALS; } - return (ALT_GPIO_PORTBIT_t) pin_num; -} - - -/****************************************************************************************/ -/* A useful utility function. Extracts the GPIO Signal Index Number from the supplied */ -/* GPIO port ID and signal mask. If passed a bitmask composed of more than one signal, */ -/* the signal number of the lowest bitmask presented is returned. */ -/****************************************************************************************/ - -ALT_GPIO_1BIT_t alt_gpio_port_pin_to_bit(ALT_GPIO_PORT_t pid, - uint32_t bitmask) -{ - uint32_t i; - - for (i=0; i <= ALT_GPIO_BITNUM_MAX ;i++) - { - if (bitmask & 0x00000001) - { - if (pid == ALT_GPIO_PORTA) {} - else if (pid == ALT_GPIO_PORTB) { i += ALT_GPIO_EOPA + 1; } - else if (pid == ALT_GPIO_PORTC) { i += ALT_GPIO_EOPB + 1; } - else { return ALT_END_OF_GPIO_SIGNALS; } - return (ALT_GPIO_1BIT_t) i; - } - bitmask >>= 1; - } - return ALT_END_OF_GPIO_SIGNALS; -} - |