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[/] [neorv32/] [trunk/] [sw/] [lib/] [source/] [neorv32_gpio.c] - Blame information for rev 64

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// #################################################################################################
// # << NEORV32: neorv32_gpio.c - General Purpose Input/Output Port HW Driver (Source) >>          #
// # ********************************************************************************************* #
// # BSD 3-Clause License                                                                          #
// #                                                                                               #
// # Copyright (c) 2021, Stephan Nolting. 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. Neither the name of the copyright holder nor the names of its contributors may be used to  #
// #    endorse or promote products derived from this software without specific prior written      #
// #    permission.                                                                                #
// #                                                                                               #
// # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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    #
// # COPYRIGHT HOLDER OR CONTRIBUTORS 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.                                                            #
// # ********************************************************************************************* #
// # The NEORV32 Processor - https://github.com/stnolting/neorv32              (c) Stephan Nolting #
// #################################################################################################
 
 
/**********************************************************************//**
 * @file neorv32_gpio.c
 * @author Stephan Nolting
 * @brief General purpose input/output port unit (GPIO) HW driver source file.
 *
 * @note These functions should only be used if the GPIO unit was synthesized (IO_GPIO_EN = true).
 **************************************************************************/
 
#include "neorv32.h"
#include "neorv32_gpio.h"
 
 
/**********************************************************************//**
 * Check if GPIO unit was synthesized.
 *
 * @return 0 if GPIO was not synthesized, 1 if GPIO is available.
 **************************************************************************/
int neorv32_gpio_available(void) {
 
  if (NEORV32_SYSINFO.SOC & (1 << SYSINFO_SOC_IO_GPIO)) {
    return 1;
  }
  else {
    return 0;
  }
}
 
 
/**********************************************************************//**
 * Set single pin of GPIO's output port.
 *
 * @param[in] pin Output pin number to be set (0..63).
 **************************************************************************/
void neorv32_gpio_pin_set(int pin) {
 
  uint32_t mask = (uint32_t)(1 << (pin & 0x1f));
 
  if (pin < 32) {
    NEORV32_GPIO.OUTPUT_LO |= mask;
  }
  else {
    NEORV32_GPIO.OUTPUT_HI |= mask;
  }
}
 
 
/**********************************************************************//**
 * Clear single pin of GPIO's output port.
 *
 * @param[in] pin Output pin number to be cleared (0..63).
 **************************************************************************/
void neorv32_gpio_pin_clr(int pin) {
 
  uint32_t mask = (uint32_t)(1 << (pin & 0x1f));
 
  if (pin < 32) {
    NEORV32_GPIO.OUTPUT_LO &= ~mask;
  }
  else {
    NEORV32_GPIO.OUTPUT_HI &= ~mask;
  }
}
 
 
/**********************************************************************//**
 * Toggle single pin of GPIO's output port.
 *
 * @param[in] pin Output pin number to be toggled (0..63).
 **************************************************************************/
void neorv32_gpio_pin_toggle(int pin) {
 
  uint32_t mask = (uint32_t)(1 << (pin & 0x1f));
 
  if (pin < 32) {
    NEORV32_GPIO.OUTPUT_LO ^= mask;
  }
  else {
    NEORV32_GPIO.OUTPUT_HI ^= mask;
  }
}
 
 
/**********************************************************************//**
 * Get single pin of GPIO's input port.
 *
 * @param[in] pin Input pin to be read (0..63).
 * @return =0 if pin is low, !=0 if pin is high.
 **************************************************************************/
uint32_t neorv32_gpio_pin_get(int pin) {
 
  uint32_t mask = (uint32_t)(1 << (pin & 0x1f));
 
  if (pin < 32) {
    return NEORV32_GPIO.INPUT_LO & mask;
  }
  else {
    return NEORV32_GPIO.INPUT_HI & mask;
  }
}
 
 
/**********************************************************************//**
 * Set complete GPIO output port.
 *
 * @param[in] port_data New output port value (64-bit).
 **************************************************************************/
void neorv32_gpio_port_set(uint64_t port_data) {
 
  union {
    uint64_t uint64;
    uint32_t uint32[sizeof(uint64_t)/2];
  } data;
 
  data.uint64 = port_data;
  NEORV32_GPIO.OUTPUT_LO = data.uint32[0];
  NEORV32_GPIO.OUTPUT_HI = data.uint32[1];
}
 
 
/**********************************************************************//**
 * Get complete GPIO input port.
 *
 * @return Current input port state (64-bit).
 **************************************************************************/
uint64_t neorv32_gpio_port_get(void) {
 
  union {
    uint64_t uint64;
    uint32_t uint32[sizeof(uint64_t)/2];
  } data;
 
  data.uint32[0] = NEORV32_GPIO.OUTPUT_LO;
  data.uint32[1] = NEORV32_GPIO.OUTPUT_HI;
 
  return data.uint64;
}
 

Line No.	Rev	Author	Line
1	2	zero_gravi	`// #################################################################################################`
2			`// # << NEORV32: neorv32_gpio.c - General Purpose Input/Output Port HW Driver (Source) >> #`
3			`// # ********************************************************************************************* #`
4			`// # BSD 3-Clause License #`
5			`// # #`
6	44	zero_gravi	`// # Copyright (c) 2021, Stephan Nolting. All rights reserved. #`
7	2	zero_gravi	`// # #`
8			`// # Redistribution and use in source and binary forms, with or without modification, are #`
9			`// # permitted provided that the following conditions are met: #`
10			`// # #`
11			`// # 1. Redistributions of source code must retain the above copyright notice, this list of #`
12			`// # conditions and the following disclaimer. #`
13			`// # #`
14			`// # 2. Redistributions in binary form must reproduce the above copyright notice, this list of #`
15			`// # conditions and the following disclaimer in the documentation and/or other materials #`
16			`// # provided with the distribution. #`
17			`// # #`
18			`// # 3. Neither the name of the copyright holder nor the names of its contributors may be used to #`
19			`// # endorse or promote products derived from this software without specific prior written #`
20			`// # permission. #`
21			`// # #`
22			`// # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS #`
23			`// # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF #`
24			`// # MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE #`
25			`// # COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, #`
26			`// # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE #`
27			`// # GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED #`
28			`// # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING #`
29			`// # NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED #`
30			`// # OF THE POSSIBILITY OF SUCH DAMAGE. #`
31			`// # ********************************************************************************************* #`
32			`// # The NEORV32 Processor - https://github.com/stnolting/neorv32 (c) Stephan Nolting #`
33			`// #################################################################################################`
34
35
36			`/********************************************************************//`
37			`* @file neorv32_gpio.c`
38			`* @author Stephan Nolting`
39			`* @brief General purpose input/output port unit (GPIO) HW driver source file.`
40			`*`
41	44	zero_gravi	`* @note These functions should only be used if the GPIO unit was synthesized (IO_GPIO_EN = true).`
42	2	zero_gravi	`**************************************************************************/`
43
44			`#include "neorv32.h"`
45			`#include "neorv32_gpio.h"`
46
47
48			`/********************************************************************//`
49			`* Check if GPIO unit was synthesized.`
50			`*`
51			`* @return 0 if GPIO was not synthesized, 1 if GPIO is available.`
52			`**************************************************************************/`
53			`int neorv32_gpio_available(void) {`
54
55	64	zero_gravi	`if (NEORV32_SYSINFO.SOC & (1 << SYSINFO_SOC_IO_GPIO)) {`
56	2	zero_gravi	`return 1;`
57			`}`
58			`else {`
59			`return 0;`
60			`}`
61			`}`
62
63
64			`/********************************************************************//`
65			`* Set single pin of GPIO's output port.`
66			`*`
67	61	zero_gravi	`* @param[in] pin Output pin number to be set (0..63).`
68	2	zero_gravi	`**************************************************************************/`
69	61	zero_gravi	`void neorv32_gpio_pin_set(int pin) {`
70	2	zero_gravi
71	61	zero_gravi	`uint32_t mask = (uint32_t)(1 << (pin & 0x1f));`
72
73			`if (pin < 32) {`
74	64	zero_gravi	`NEORV32_GPIO.OUTPUT_LO \|= mask;`
75	61	zero_gravi	`}`
76			`else {`
77	64	zero_gravi	`NEORV32_GPIO.OUTPUT_HI \|= mask;`
78	61	zero_gravi	`}`
79	2	zero_gravi	`}`
80
81
82			`/********************************************************************//`
83			`* Clear single pin of GPIO's output port.`
84			`*`
85	61	zero_gravi	`* @param[in] pin Output pin number to be cleared (0..63).`
86	2	zero_gravi	`**************************************************************************/`
87	61	zero_gravi	`void neorv32_gpio_pin_clr(int pin) {`
88	2	zero_gravi
89	61	zero_gravi	`uint32_t mask = (uint32_t)(1 << (pin & 0x1f));`
90
91			`if (pin < 32) {`
92	64	zero_gravi	`NEORV32_GPIO.OUTPUT_LO &= ~mask;`
93	61	zero_gravi	`}`
94			`else {`
95	64	zero_gravi	`NEORV32_GPIO.OUTPUT_HI &= ~mask;`
96	61	zero_gravi	`}`
97	2	zero_gravi	`}`
98
99
100			`/********************************************************************//`
101			`* Toggle single pin of GPIO's output port.`
102			`*`
103	61	zero_gravi	`* @param[in] pin Output pin number to be toggled (0..63).`
104	2	zero_gravi	`**************************************************************************/`
105	61	zero_gravi	`void neorv32_gpio_pin_toggle(int pin) {`
106	2	zero_gravi
107	61	zero_gravi	`uint32_t mask = (uint32_t)(1 << (pin & 0x1f));`
108
109			`if (pin < 32) {`
110	64	zero_gravi	`NEORV32_GPIO.OUTPUT_LO ^= mask;`
111	61	zero_gravi	`}`
112			`else {`
113	64	zero_gravi	`NEORV32_GPIO.OUTPUT_HI ^= mask;`
114	61	zero_gravi	`}`
115	2	zero_gravi	`}`
116
117
118			`/********************************************************************//`
119			`* Get single pin of GPIO's input port.`
120			`*`
121	61	zero_gravi	`* @param[in] pin Input pin to be read (0..63).`
122			`* @return =0 if pin is low, !=0 if pin is high.`
123	2	zero_gravi	`**************************************************************************/`
124	61	zero_gravi	`uint32_t neorv32_gpio_pin_get(int pin) {`
125	2	zero_gravi
126	61	zero_gravi	`uint32_t mask = (uint32_t)(1 << (pin & 0x1f));`
127
128			`if (pin < 32) {`
129	64	zero_gravi	`return NEORV32_GPIO.INPUT_LO & mask;`
130	61	zero_gravi	`}`
131			`else {`
132	64	zero_gravi	`return NEORV32_GPIO.INPUT_HI & mask;`
133	61	zero_gravi	`}`
134	2	zero_gravi	`}`
135
136
137			`/********************************************************************//`
138			`* Set complete GPIO output port.`
139			`*`
140	61	zero_gravi	`* @param[in] port_data New output port value (64-bit).`
141	2	zero_gravi	`**************************************************************************/`
142	61	zero_gravi	`void neorv32_gpio_port_set(uint64_t port_data) {`
143	2	zero_gravi
144	64	zero_gravi	`union {`
145			`uint64_t uint64;`
146			`uint32_t uint32[sizeof(uint64_t)/2];`
147			`} data;`
148
149			`data.uint64 = port_data;`
150			`NEORV32_GPIO.OUTPUT_LO = data.uint32[0];`
151			`NEORV32_GPIO.OUTPUT_HI = data.uint32[1];`
152	2	zero_gravi	`}`
153
154
155			`/********************************************************************//`
156			`* Get complete GPIO input port.`
157			`*`
158	61	zero_gravi	`* @return Current input port state (64-bit).`
159	2	zero_gravi	`**************************************************************************/`
160	61	zero_gravi	`uint64_t neorv32_gpio_port_get(void) {`
161	2	zero_gravi
162	64	zero_gravi	`union {`
163			`uint64_t uint64;`
164			`uint32_t uint32[sizeof(uint64_t)/2];`
165			`} data;`
166
167			`data.uint32[0] = NEORV32_GPIO.OUTPUT_LO;`
168			`data.uint32[1] = NEORV32_GPIO.OUTPUT_HI;`
169
170			`return data.uint64;`
171	2	zero_gravi	`}`
172	23	zero_gravi

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[/] [neorv32/] [trunk/] [sw/] [lib/] [source/] [neorv32_gpio.c] - Blame information for rev 64