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add uart for feather nrf52840

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hathach 2020-03-08 13:25:14 +07:00
parent 4620ac5b77
commit b638aabad8
3 changed files with 32 additions and 4 deletions
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3
hw/bsp/feather_nrf52840_express/board.mk
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@ -25,7 +25,8 @@ LDFLAGS += -L$(TOP)/hw/mcu/nordic/nrfx/mdk
SRC_C += \
hw/mcu/nordic/nrfx/drivers/src/nrfx_power.c \
hw/mcu/nordic/nrfx/mdk/system_nrf52840.c \
hw/mcu/nordic/nrfx/drivers/src/nrfx_uarte.c \
hw/mcu/nordic/nrfx/mdk/system_nrf52840.c
INC += \
$(TOP)/hw/mcu/nordic/cmsis/Include \

31
hw/bsp/feather_nrf52840_express/feather_nrf52840_express.c
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@ -29,6 +29,7 @@
#include "nrfx.h"
#include "nrfx/hal/nrf_gpio.h"
#include "nrfx/drivers/include/nrfx_power.h"
#include "nrfx/drivers/include/nrfx_uarte.h"
#ifdef SOFTDEVICE_PRESENT
#include "nrf_sdm.h"
@ -45,12 +46,20 @@
#define BUTTON_PIN _PINNUM(1, 02)
#define UART_RX_PIN 24
#define UART_TX_PIN 25
static nrfx_uarte_t _uart_id = NRFX_UARTE_INSTANCE(0);
// tinyusb function that handles power event (detected, ready, removed)
// We must call it within SD's SOC event handler, or set it as power event handler if SD is not enabled.
extern void tusb_hal_nrf_power_event(uint32_t event);
void board_init(void)
{
// stop LF clock just in case we jump from application without reset
NRF_CLOCK->TASKS_LFCLKSTOP = 1UL;
// Config clock source: XTAL or RC in sdk_config.h
NRF_CLOCK->LFCLKSRC = (uint32_t)((CLOCK_LFCLKSRC_SRC_Xtal << CLOCK_LFCLKSRC_SRC_Pos) & CLOCK_LFCLKSRC_SRC_Msk);
NRF_CLOCK->TASKS_LFCLKSTART = 1UL;
@ -67,6 +76,24 @@ void board_init(void)
SysTick_Config(SystemCoreClock/1000);
#endif
// UART
nrfx_uarte_config_t uart_cfg =
{
.pseltxd = UART_TX_PIN,
.pselrxd = UART_RX_PIN,
.pselcts = NRF_UARTE_PSEL_DISCONNECTED,
.pselrts = NRF_UARTE_PSEL_DISCONNECTED,
.p_context = NULL,
.baudrate = NRF_UARTE_BAUDRATE_115200, // CFG_BOARD_UART_BAUDRATE
.interrupt_priority = 7,
.hal_cfg = {
.hwfc = NRF_UARTE_HWFC_DISABLED,
.parity = NRF_UARTE_PARITY_EXCLUDED,
}
};
nrfx_uarte_init(&_uart_id, &uart_cfg, NULL); //uart_handler);
#if TUSB_OPT_DEVICE_ENABLED
// Priorities 0, 1, 4 (nRF52) are reserved for SoftDevice
// 2 is highest for application
@ -127,12 +154,12 @@ int board_uart_read(uint8_t* buf, int len)
{
(void) buf; (void) len;
return 0;
// return NRFX_SUCCESS == nrfx_uart_rx(&_uart_id, buf, (size_t) len) ? len : 0;
}
int board_uart_write(void const * buf, int len)
{
(void) buf; (void) len;
return 0;
return (NRFX_SUCCESS == nrfx_uarte_tx(&_uart_id, (uint8_t const*) buf, (size_t) len)) ? len : 0;
}
#if CFG_TUSB_OS == OPT_OS_NONE

2
hw/bsp/pca10056/board.mk
View File

@ -26,7 +26,7 @@ LDFLAGS += -L$(TOP)/hw/mcu/nordic/nrfx/mdk
SRC_C += \
hw/mcu/nordic/nrfx/drivers/src/nrfx_power.c \
hw/mcu/nordic/nrfx/drivers/src/nrfx_uarte.c \
hw/mcu/nordic/nrfx/mdk/system_nrf52840.c \
hw/mcu/nordic/nrfx/mdk/system_nrf52840.c
INC += \
$(TOP)/hw/mcu/nordic/cmsis/Include \