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move debug uart methods, clarify license info

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Joey Castillo 2021-08-17 13:16:38 -04:00
parent 90211a7588
commit f9c8a935e6
5 changed files with 175 additions and 192 deletions
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126
watch-library/hal_gpio.h
View file

@ -1,126 +0,0 @@
/*
* Copyright (c) 2014-2016, Alex Taradov <alex@taradov.com>
* 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 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.
*/
#ifndef _HAL_GPIO_H_
#define _HAL_GPIO_H_
/*- Definitions -------------------------------------------------------------*/
#define HAL_GPIO_PORTA 0
#define HAL_GPIO_PORTB 1
#define HAL_GPIO_PORTC 2
#define HAL_GPIO_PMUX_A 0
#define HAL_GPIO_PMUX_B 1
#define HAL_GPIO_PMUX_C 2
#define HAL_GPIO_PMUX_D 3
#define HAL_GPIO_PMUX_E 4
#define HAL_GPIO_PMUX_F 5
#define HAL_GPIO_PMUX_G 6
#define HAL_GPIO_PMUX_H 7
#define HAL_GPIO_PMUX_I 8
#define HAL_GPIO_PIN(name, port, pin) \
static inline void HAL_GPIO_##name##_set(void) \
{ \
PORT->Group[HAL_GPIO_PORT##port].OUTSET.reg = (1 << pin); \
(void)HAL_GPIO_##name##_set; \
} \
\
static inline void HAL_GPIO_##name##_clr(void) \
{ \
PORT->Group[HAL_GPIO_PORT##port].OUTCLR.reg = (1 << pin); \
(void)HAL_GPIO_##name##_clr; \
} \
\
static inline void HAL_GPIO_##name##_toggle(void) \
{ \
PORT->Group[HAL_GPIO_PORT##port].OUTTGL.reg = (1 << pin); \
(void)HAL_GPIO_##name##_toggle; \
} \
\
static inline void HAL_GPIO_##name##_write(int value) \
{ \
if (value) \
PORT->Group[HAL_GPIO_PORT##port].OUTSET.reg = (1 << pin); \
else \
PORT->Group[HAL_GPIO_PORT##port].OUTCLR.reg = (1 << pin); \
(void)HAL_GPIO_##name##_write; \
} \
\
static inline void HAL_GPIO_##name##_in(void) \
{ \
PORT->Group[HAL_GPIO_PORT##port].DIRCLR.reg = (1 << pin); \
PORT->Group[HAL_GPIO_PORT##port].PINCFG[pin].reg |= PORT_PINCFG_INEN; \
PORT->Group[HAL_GPIO_PORT##port].PINCFG[pin].reg &= ~PORT_PINCFG_PULLEN; \
(void)HAL_GPIO_##name##_in; \
} \
\
static inline void HAL_GPIO_##name##_out(void) \
{ \
PORT->Group[HAL_GPIO_PORT##port].DIRSET.reg = (1 << pin); \
PORT->Group[HAL_GPIO_PORT##port].PINCFG[pin].reg |= PORT_PINCFG_INEN; \
(void)HAL_GPIO_##name##_out; \
} \
\
static inline void HAL_GPIO_##name##_pullup(void) \
{ \
PORT->Group[HAL_GPIO_PORT##port].OUTSET.reg = (1 << pin); \
PORT->Group[HAL_GPIO_PORT##port].PINCFG[pin].reg |= PORT_PINCFG_PULLEN; \
(void)HAL_GPIO_##name##_pullup; \
} \
\
static inline int HAL_GPIO_##name##_read(void) \
{ \
return (PORT->Group[HAL_GPIO_PORT##port].IN.reg & (1 << pin)) != 0; \
(void)HAL_GPIO_##name##_read; \
} \
\
static inline int HAL_GPIO_##name##_state(void) \
{ \
return (PORT->Group[HAL_GPIO_PORT##port].DIR.reg & (1 << pin)) != 0; \
(void)HAL_GPIO_##name##_state; \
} \
\
static inline void HAL_GPIO_##name##_pmuxen(int mux) \
{ \
PORT->Group[HAL_GPIO_PORT##port].PINCFG[pin].reg |= PORT_PINCFG_PMUXEN; \
if (pin & 1) \
PORT->Group[HAL_GPIO_PORT##port].PMUX[pin>>1].bit.PMUXO = mux; \
else \
PORT->Group[HAL_GPIO_PORT##port].PMUX[pin>>1].bit.PMUXE = mux; \
(void)HAL_GPIO_##name##_pmuxen; \
} \
\
static inline void HAL_GPIO_##name##_pmuxdis(void) \
{ \
PORT->Group[HAL_GPIO_PORT##port].PINCFG[pin].reg &= ~PORT_PINCFG_PMUXEN; \
(void)HAL_GPIO_##name##_pmuxdis; \
} \
#endif // _HAL_GPIO_H_

84
watch-library/main.c
View file

@ -1,30 +1,25 @@
/*
* Copyright (c) 2021, Joey Castillo
* UART methods are Copyright (c) 2014-2017, Alex Taradov <alex@taradov.com>
* All rights reserved.
* MIT License
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* Copyright (c) 2021 Joey Castillo
*
* 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.
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* 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 above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
//-----------------------------------------------------------------------------
@ -35,53 +30,10 @@
#include <stdio.h>
#include "saml22.h"
#include "hal_init.h"
#include "peripheral_clk_config.h"
#include "hal_gpio.h"
#include "atmel_start_pins.h"
#include "watch.h"
//-----------------------------------------------------------------------------
HAL_GPIO_PIN(UART_TX, B, 0)
//-----------------------------------------------------------------------------
static void uart_init(uint32_t baud) {
uint64_t br = (uint64_t)65536 * (CONF_CPU_FREQUENCY - 16 * baud) / CONF_CPU_FREQUENCY;
HAL_GPIO_UART_TX_out();
HAL_GPIO_UART_TX_pmuxen(HAL_GPIO_PMUX_C);
MCLK->APBCMASK.reg |= MCLK_APBCMASK_SERCOM3;
GCLK->PCHCTRL[SERCOM3_GCLK_ID_CORE].reg = GCLK_PCHCTRL_GEN(0) | GCLK_PCHCTRL_CHEN;
while (0 == (GCLK->PCHCTRL[SERCOM3_GCLK_ID_CORE].reg & GCLK_PCHCTRL_CHEN));
SERCOM3->USART.CTRLA.reg =
SERCOM_USART_CTRLA_DORD | SERCOM_USART_CTRLA_MODE(1/*USART_INT_CLK*/) |
SERCOM_USART_CTRLA_RXPO(0/*PAD0*/) | SERCOM_USART_CTRLA_TXPO(1/*PAD2*/);
SERCOM3->USART.CTRLB.reg = SERCOM_USART_CTRLB_RXEN | SERCOM_USART_CTRLB_TXEN |
SERCOM_USART_CTRLB_CHSIZE(0/*8 bits*/);
SERCOM3->USART.BAUD.reg = (uint16_t)br;
SERCOM3->USART.CTRLA.reg |= SERCOM_USART_CTRLA_ENABLE;
}
//-----------------------------------------------------------------------------
void uart_putc(char c) {
while (!(SERCOM3->USART.INTFLAG.reg & SERCOM_USART_INTFLAG_DRE));
SERCOM3->USART.DATA.reg = c;
}
//-----------------------------------------------------------------------------
void uart_puts(char *s) {
while (*s) uart_putc(*s++);
}
int main(void) {
// Temporary, for debugging.
// uart_init(115200);
// ASF code. Initialize the MCU with configuration options from Atmel Studio.
init_mcu();

23
watch-library/watch/notes.h
View file

@ -1,3 +1,26 @@
/*
* MIT License
*
* Copyright (c) 2020 Joey Castillo
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
////< @file notes.h
/// @brief 108 notes for use with watch_buzzer_play_note

88
watch-library/watch/watch.c
View file

@ -1,4 +1,29 @@
/*
* MIT License
*
* Copyright (c) 2021 Joey Castillo
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "watch.h"
#include "peripheral_clk_config.h"
#include <stdlib.h>
//////////////////////////////////////////////////////////////////////////////////////////
@ -502,6 +527,69 @@ uint32_t watch_i2c_read32(int16_t addr, uint8_t reg) {
return data;
}
//////////////////////////////////////////////////////////////////////////////////////////
// Debug UART
/*
* UART methods are Copyright (c) 2014-2017, Alex Taradov <alex@taradov.com>
* 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 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.
*/
void watch_enable_debug_uart(uint32_t baud) {
uint64_t br = (uint64_t)65536 * (CONF_CPU_FREQUENCY - 16 * baud) / CONF_CPU_FREQUENCY;
gpio_set_pin_direction(D1, GPIO_DIRECTION_IN);
gpio_set_pin_function(D1, PINMUX_PB00C_SERCOM3_PAD2);
MCLK->APBCMASK.reg |= MCLK_APBCMASK_SERCOM3;
GCLK->PCHCTRL[SERCOM3_GCLK_ID_CORE].reg = GCLK_PCHCTRL_GEN(0) | GCLK_PCHCTRL_CHEN;
while (0 == (GCLK->PCHCTRL[SERCOM3_GCLK_ID_CORE].reg & GCLK_PCHCTRL_CHEN));
SERCOM3->USART.CTRLA.reg =
SERCOM_USART_CTRLA_DORD | SERCOM_USART_CTRLA_MODE(1/*USART_INT_CLK*/) |
SERCOM_USART_CTRLA_RXPO(0/*PAD0*/) | SERCOM_USART_CTRLA_TXPO(1/*PAD2*/);
SERCOM3->USART.CTRLB.reg = SERCOM_USART_CTRLB_RXEN | SERCOM_USART_CTRLB_TXEN |
SERCOM_USART_CTRLB_CHSIZE(0/*8 bits*/);
SERCOM3->USART.BAUD.reg = (uint16_t)br;
SERCOM3->USART.CTRLA.reg |= SERCOM_USART_CTRLA_ENABLE;
}
void watch_debug_putc(char c) {
while (!(SERCOM3->USART.INTFLAG.reg & SERCOM_USART_INTFLAG_DRE));
SERCOM3->USART.DATA.reg = c;
}
void watch_debug_puts(char *s) {
while (*s) watch_debug_putc(*s++);
}
//////////////////////////////////////////////////////////////////////////////////////////
// Deep Sleep

46
watch-library/watch/watch.h
View file

@ -1,3 +1,26 @@
/*
* MIT License
*
* Copyright (c) 2020 Joey Castillo
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/// @file watch.h
#ifndef WATCH_H_
@ -25,6 +48,7 @@
- @ref gpio - This section covers functions related to general-purpose input and output signals.
- @ref i2c - This section covers functions related to the SAM L22's built-I2C driver, including configuring
the I2C bus, putting values directly on the bus and reading data from registers on I2C devices.
- @ref debug - This section covers functions related to the debug UART, available on pin D1 of the 9-pin connector.
- @ref deepsleep - This section covers functions related to preparing for and entering BACKUP mode, the
deepest sleep mode available on the SAM L22.
*/
@ -470,6 +494,28 @@ uint32_t watch_i2c_read24(int16_t addr, uint8_t reg);
uint32_t watch_i2c_read32(int16_t addr, uint8_t reg);
/// @}
/** @addtogroup debug Debug UART
* @brief This section covers functions related to the debug UART, available on
* pin D1 of the 9-pin connector.
* @todo Refactor this as a USB CDC so that folks can debug over USB.
*/
/// @{
/** @brief Initializes the debug UART.
* @param baud The baud rate
*/
void watch_enable_debug_uart(uint32_t baud);
/** @brief Outputs a single character on the debug UART.
* @param c The character you wish to output.
*/
void watch_debug_putc(char c);
/** @brief Outputs a string on the debug UART.
* @param s A null-terminated string.
*/
void watch_debug_puts(char *s);
/// @}
/** @addtogroup deepsleep Deep Sleep Control
* @brief This section covers functions related to preparing for and entering BACKUP mode, the