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periph_conf.h File Reference

Peripheral MCU configuration for the nucleo-g070rb board. More...

Detailed Description

Peripheral MCU configuration for the nucleo-g070rb board.

Author
Alexandre Abadie alexa.nosp@m.ndre.nosp@m..abad.nosp@m.ie@i.nosp@m.nria..nosp@m.fr

Definition in file periph_conf.h.

#include "periph_cpu.h"
#include "clk_conf.h"
#include "cfg_i2c1_pb8_pb9.h"
#include "cfg_rtt_default.h"
+ Include dependency graph for periph_conf.h:

Go to the source code of this file.

#define CONFIG_BOARD_HAS_LSE   1
 

Timer configuration

#define TIMER_0_ISR   isr_tim3
 
#define TIMER_NUMOF   ARRAY_SIZE(timer_config)
 
static const timer_conf_t timer_config []
 

UART configuration

#define UART_0_ISR   (isr_usart2)
 
#define UART_1_ISR   (isr_usart1)
 
#define UART_NUMOF   ARRAY_SIZE(uart_config)
 
static const uart_conf_t uart_config []
 
#define VBAT_ADC   ADC_LINE(6)
 VBAT ADC line.
 
#define ADC_NUMOF   ARRAY_SIZE(adc_config)
 
static const adc_conf_t adc_config []
 ADC configuration.
 

SPI configuration

#define SPI_NUMOF   ARRAY_SIZE(spi_config)
 
static const spi_conf_t spi_config []
 

Macro Definition Documentation

◆ ADC_NUMOF

#define ADC_NUMOF   ARRAY_SIZE(adc_config)

Definition at line 127 of file periph_conf.h.

◆ CONFIG_BOARD_HAS_LSE

#define CONFIG_BOARD_HAS_LSE   1

Definition at line 26 of file periph_conf.h.

◆ SPI_NUMOF

#define SPI_NUMOF   ARRAY_SIZE(spi_config)

Definition at line 150 of file periph_conf.h.

◆ TIMER_0_ISR

#define TIMER_0_ISR   isr_tim3

Definition at line 51 of file periph_conf.h.

◆ TIMER_NUMOF

#define TIMER_NUMOF   ARRAY_SIZE(timer_config)

Definition at line 53 of file periph_conf.h.

◆ UART_0_ISR

#define UART_0_ISR   (isr_usart2)

Definition at line 83 of file periph_conf.h.

◆ UART_1_ISR

#define UART_1_ISR   (isr_usart1)

Definition at line 84 of file periph_conf.h.

◆ UART_NUMOF

#define UART_NUMOF   ARRAY_SIZE(uart_config)

Definition at line 86 of file periph_conf.h.

◆ VBAT_ADC

#define VBAT_ADC   ADC_LINE(6)

VBAT ADC line.

Definition at line 126 of file periph_conf.h.

Variable Documentation

◆ adc_config

const adc_conf_t adc_config[]
static
Initial value:
= {
{ .pin = GPIO_PIN(PORT_A, 0), .dev = 0, .chan = 0 },
{ .pin = GPIO_PIN(PORT_A, 1), .dev = 0, .chan = 1 },
{ .pin = GPIO_PIN(PORT_A, 4), .dev = 0, .chan = 4 },
{ .pin = GPIO_PIN(PORT_B, 1), .dev = 0, .chan = 9 },
{ .pin = GPIO_PIN(PORT_B, 11), .dev = 0, .chan = 15 },
{ .pin = GPIO_PIN(PORT_B, 12), .dev = 0, .chan = 16 },
{ .pin = GPIO_UNDEF, .dev = 0, .chan = 14},
}
@ PORT_B
port B
Definition periph_cpu.h:48
@ PORT_A
port A
Definition periph_cpu.h:47
#define GPIO_PIN(x, y)
Define a CPU specific GPIO pin generator macro.
Definition periph_cpu.h:46
#define GPIO_UNDEF
Definition of a fitting UNDEF value.

ADC configuration.

Note that we do not configure all ADC channels, and not in the STM32G070 order. Instead, we just define 6 ADC channels, for the Nucleo Arduino header pins A0-A5 and the internal VBAT channel.

To find appropriate device and channel find in the board manual, table showing pin assignments and information about ADC - a text similar to ARD_A[N]_IN[X], where: [N] - describes analog pin number, [X] - describes used channel - indexed from 1, for example ARD_A5_IN16 is channel 16

For Nucleo-G070RB this information is in board manual, Table 12, page 30.

VBAT is connected to an internal input and voltage divider is used, so that only 1/3 of the actual VBAT is measured. This allows for a supply voltage higher than the reference voltage.

For Nucleo-G070RB more information is provided in MCU datasheet, in section 3.14.3 - Vbat battery voltage monitoring, page 22.

Definition at line 116 of file periph_conf.h.

◆ spi_config

const spi_conf_t spi_config[]
static
Initial value:
= {
{
.dev = SPI1,
.mosi_pin = GPIO_PIN(PORT_A, 7),
.miso_pin = GPIO_PIN(PORT_A, 6),
.sclk_pin = GPIO_PIN(PORT_A, 5),
.cs_pin = GPIO_UNDEF,
.mosi_af = GPIO_AF0,
.miso_af = GPIO_AF0,
.sclk_af = GPIO_AF0,
.cs_af = GPIO_AF0,
.rccmask = RCC_APBENR2_SPI1EN,
.apbbus = APB12,
},
}
@ GPIO_AF0
use alternate function 0
Definition cpu_gpio.h:102

Definition at line 134 of file periph_conf.h.

◆ timer_config

const timer_conf_t timer_config[]
static
Initial value:
= {
{
.dev = TIM3,
.max = 0x0000ffff,
.rcc_mask = RCC_APBENR1_TIM3EN,
.bus = APB1,
.irqn = TIM3_IRQn
}
}
@ APB1
Advanced Peripheral Bus 1
Definition periph_cpu.h:79

Definition at line 41 of file periph_conf.h.

◆ uart_config

const uart_conf_t uart_config[]
static
Initial value:
= {
{
.dev = USART2,
.rcc_mask = RCC_APBENR1_USART2EN,
.rx_pin = GPIO_PIN(PORT_A, 3),
.tx_pin = GPIO_PIN(PORT_A, 2),
.rx_af = GPIO_AF1,
.tx_af = GPIO_AF1,
.bus = APB1,
.irqn = USART2_IRQn,
},
{
.dev = USART1,
.rcc_mask = RCC_APBENR2_USART1EN,
.rx_pin = GPIO_PIN(PORT_C, 5),
.tx_pin = GPIO_PIN(PORT_C, 4),
.rx_af = GPIO_AF1,
.tx_af = GPIO_AF1,
.bus = APB12,
.irqn = USART1_IRQn,
},
}
@ PORT_C
port C
Definition periph_cpu.h:49
@ GPIO_AF1
use alternate function 1
Definition cpu_gpio.h:103

Definition at line 60 of file periph_conf.h.