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periph_conf.h
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1/*
2 * SPDX-FileCopyrightText: 2020 Antonio Galea
3 * SPDX-License-Identifier: LGPL-2.1-only
4 */
5
6#pragma once
7
18
19#include "periph_cpu.h"
20
21#ifdef __cplusplus
22extern "C" {
23#endif
24
28#define CLOCK_CORECLOCK (48000000U)
29
34#define USE_VREG_BUCK (1)
35
40static const tc32_conf_t timer_config[] = {
41 { /* Timer 0 - System Clock */
42 .dev = TC0,
43 .irq = TC0_IRQn,
44 .mclk = &MCLK->APBCMASK.reg,
45 .mclk_mask = MCLK_APBCMASK_TC0_Msk | MCLK_APBCMASK_TC1_Msk,
46 .gclk_id = TC0_GCLK_ID,
47 .gclk_src = SAM0_GCLK_TIMER,
48 .flags = TC_CTRLA_MODE_COUNT32,
49 }
50};
51
52/* Timer 0 configuration */
53#define TIMER_0_CHANNELS 2
54#define TIMER_0_ISR isr_tc0
55#define TIMER_NUMOF ARRAY_SIZE(timer_config)
57
62static const uart_conf_t uart_config[] = {
63 {
64 .dev = &SERCOM3->USART,
65 .rx_pin = GPIO_PIN(PA, 23),
66 .tx_pin = GPIO_PIN(PA, 22),
67#ifdef MODULE_PERIPH_UART_HW_FC
68 .rts_pin = GPIO_UNDEF,
69 .cts_pin = GPIO_UNDEF,
70#endif
71 .mux = GPIO_MUX_C,
72 .rx_pad = UART_PAD_RX_1,
73 .tx_pad = UART_PAD_TX_0,
74 .flags = UART_FLAG_NONE,
75 .gclk_src = SAM0_GCLK_MAIN,
76 }
77};
78
79/* interrupt function name mapping */
80#define UART_0_ISR isr_sercom3
81
82#define UART_NUMOF ARRAY_SIZE(uart_config)
84
89static const spi_conf_t spi_config[] = {
90 {
91 .dev = &(SERCOM0->SPI),
92 .miso_pin = GPIO_PIN(PA, 4),
93 .mosi_pin = GPIO_PIN(PA, 6),
94 .clk_pin = GPIO_PIN(PA, 7),
95 .miso_mux = GPIO_MUX_D,
96 .mosi_mux = GPIO_MUX_D,
97 .clk_mux = GPIO_MUX_D,
98 .miso_pad = SPI_PAD_MISO_0,
99 .mosi_pad = SPI_PAD_MOSI_2_SCK_3,
100 .gclk_src = SAM0_GCLK_MAIN,
101#ifdef MODULE_PERIPH_DMA
102 .tx_trigger = SERCOM0_DMAC_ID_TX,
103 .rx_trigger = SERCOM0_DMAC_ID_RX,
104#endif
105 }
106};
107
108#define SPI_NUMOF ARRAY_SIZE(spi_config)
110
115static const i2c_conf_t i2c_config[] = {
116 {
117 .dev = &(SERCOM2->I2CM),
118 .speed = I2C_SPEED_NORMAL,
119 .scl_pin = GPIO_PIN(PA, 9),
120 .sda_pin = GPIO_PIN(PA, 8),
121 .mux = GPIO_MUX_D,
122 .gclk_src = SAM0_GCLK_MAIN,
123 .flags = I2C_FLAG_NONE
124 }
125};
126
127#define I2C_NUMOF ARRAY_SIZE(i2c_config)
129
134#define EXTERNAL_OSC32_SOURCE 1
135#define INTERNAL_OSC32_SOURCE 0
136#define ULTRA_LOW_POWER_INTERNAL_OSC_SOURCE 0
138
143#ifndef RTT_FREQUENCY
144#define RTT_FREQUENCY (32768U)
145#endif
146
148
153
154/* ADC Default values */
155#define ADC_PRESCALER ADC_CTRLB_PRESCALER_DIV256
156
157#define ADC_NEG_INPUT ADC_INPUTCTRL_MUXNEG(0x18u)
158#define ADC_REF_DEFAULT ADC_REFCTRL_REFSEL_INTVCC2
159
160static const adc_conf_chan_t adc_channels[] = {
161 /* port, pin, muxpos */
162 { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA10 },
163 { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA11 },
164 { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA02 },
165 { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA03 }
166};
167
168#define ADC_NUMOF ARRAY_SIZE(adc_channels)
170
175static const sam0_common_usb_config_t sam_usbdev_config[] = {
176 {
177 .dm = GPIO_PIN(PA, 24),
178 .dp = GPIO_PIN(PA, 25),
179 .d_mux = GPIO_MUX_G,
180 .device = &USB->DEVICE,
181 .gclk_src = SAM0_GCLK_48MHZ,
182 }
183};
185
186#ifdef __cplusplus
187}
188#endif
189
#define GPIO_PIN(x, y)
Define a CPU specific GPIO pin generator macro.
Definition periph_cpu.h:45
#define GPIO_UNDEF
Definition of a fitting UNDEF value.
@ I2C_SPEED_NORMAL
normal mode: ~100 kbit/s
Definition periph_cpu.h:277
@ UART_PAD_RX_1
select pad 1
@ I2C_FLAG_NONE
No flags set.
@ SPI_PAD_MISO_0
use pad 0 for MISO line
@ UART_FLAG_NONE
No flags set.
@ PA
port A
@ UART_PAD_TX_0
select pad 0
@ GPIO_MUX_D
select peripheral function D
@ GPIO_MUX_G
select peripheral function G
@ GPIO_MUX_C
select peripheral function C
@ SPI_PAD_MOSI_2_SCK_3
use pad 2 for MOSI, pad 3 for SCK
#define ADC_INPUTCTRL_MUXPOS_PA10
Alias for PIN18.
Definition periph_cpu.h:136
#define ADC_INPUTCTRL_MUXPOS_PA11
Alias for PIN19.
Definition periph_cpu.h:137
#define ADC_INPUTCTRL_MUXPOS_PA02
ADC pin aliases.
Definition periph_cpu.h:118
#define ADC_INPUTCTRL_MUXPOS_PA03
Alias for PIN1.
Definition periph_cpu.h:119
#define SAM0_GCLK_MAIN
120 MHz main clock
Definition periph_cpu.h:73
#define SAM0_GCLK_TIMER
4-8 MHz clock for xTimer
Definition periph_cpu.h:78
ADC Channel Configuration.
I2C configuration structure.
Definition periph_cpu.h:298
USB peripheral parameters.
SPI device configuration.
Definition periph_cpu.h:336
Timer device configuration.
UART device configuration.
Definition periph_cpu.h:217