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micropython/ports/renesas-ra/mphalport.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018,2021 Damien P. George
* Copyright (c) 2021,2022 Renesas Electronics Corporation
* Copyright (c) 2023 Arduino SA
*
* 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 "py/runtime.h"
#include "py/stream.h"
#include "py/mphal.h"
#include "py/mperrno.h"
#include "py/mphal.h"
#include "py/ringbuf.h"
#include "extmod/misc.h"
#include "shared/runtime/interrupt_char.h"
#include "tusb.h"
#include "uart.h"
#if MICROPY_HW_ENABLE_INTERNAL_FLASH_STORAGE
void flash_cache_commit(void);
#endif
#if MICROPY_HW_ENABLE_UART_REPL || MICROPY_HW_USB_CDC
#ifndef MICROPY_HW_STDIN_BUFFER_LEN
#define MICROPY_HW_STDIN_BUFFER_LEN 512
#endif
STATIC uint8_t stdin_ringbuf_array[MICROPY_HW_STDIN_BUFFER_LEN];
ringbuf_t stdin_ringbuf = { stdin_ringbuf_array, sizeof(stdin_ringbuf_array) };
#endif
// this table converts from HAL_StatusTypeDef to POSIX errno
const byte mp_hal_status_to_errno_table[4] = {
[HAL_OK] = 0,
[HAL_ERROR] = MP_EIO,
[HAL_BUSY] = MP_EBUSY,
[HAL_TIMEOUT] = MP_ETIMEDOUT,
};
NORETURN void mp_hal_raise(HAL_StatusTypeDef status) {
mp_raise_OSError(mp_hal_status_to_errno_table[status]);
}
#if MICROPY_HW_USB_CDC
uint8_t cdc_itf_pending; // keep track of cdc interfaces which need attention to poll
void poll_cdc_interfaces(void) {
// any CDC interfaces left to poll?
if (cdc_itf_pending && ringbuf_free(&stdin_ringbuf)) {
for (uint8_t itf = 0; itf < 8; ++itf) {
if (cdc_itf_pending & (1 << itf)) {
tud_cdc_rx_cb(itf);
if (!cdc_itf_pending) {
break;
}
}
}
}
}
void tud_cdc_rx_cb(uint8_t itf) {
// consume pending USB data immediately to free usb buffer and keep the endpoint from stalling.
// in case the ringbuffer is full, mark the CDC interface that need attention later on for polling
cdc_itf_pending &= ~(1 << itf);
for (uint32_t bytes_avail = tud_cdc_n_available(itf); bytes_avail > 0; --bytes_avail) {
if (ringbuf_free(&stdin_ringbuf)) {
int data_char = tud_cdc_read_char();
if (data_char == mp_interrupt_char) {
mp_sched_keyboard_interrupt();
} else {
ringbuf_put(&stdin_ringbuf, data_char);
}
} else {
cdc_itf_pending |= (1 << itf);
return;
}
}
}
#endif
uintptr_t mp_hal_stdio_poll(uintptr_t poll_flags) {
uintptr_t ret = 0;
#if MICROPY_HW_USB_CDC
poll_cdc_interfaces();
#endif
#if MICROPY_HW_ENABLE_UART_REPL || MICROPY_HW_USB_CDC
if ((poll_flags & MP_STREAM_POLL_RD) && ringbuf_peek(&stdin_ringbuf) != -1) {
ret |= MP_STREAM_POLL_RD;
}
if (poll_flags & MP_STREAM_POLL_WR) {
#if MICROPY_HW_ENABLE_UART_REPL
ret |= MP_STREAM_POLL_WR;
#else
if (tud_cdc_connected() && tud_cdc_write_available() > 0) {
ret |= MP_STREAM_POLL_WR;
}
#endif
}
#endif
#if MICROPY_PY_OS_DUPTERM
ret |= mp_os_dupterm_poll(poll_flags);
#endif
return ret;
}
// Receive single character
int mp_hal_stdin_rx_chr(void) {
for (;;) {
#if MICROPY_HW_USB_CDC
poll_cdc_interfaces();
#endif
#if MICROPY_HW_ENABLE_INTERNAL_FLASH_STORAGE
flash_cache_commit();
#endif
int c = ringbuf_get(&stdin_ringbuf);
if (c != -1) {
return c;
}
#if MICROPY_PY_OS_DUPTERM
int dupterm_c = mp_os_dupterm_rx_chr();
if (dupterm_c >= 0) {
return dupterm_c;
}
#endif
MICROPY_EVENT_POLL_HOOK
}
}
// Send string of given length
void mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) {
#if MICROPY_HW_ENABLE_UART_REPL
if (MP_STATE_PORT(pyb_stdio_uart) != NULL) {
uart_tx_strn(MP_STATE_PORT(pyb_stdio_uart), str, len);
}
#endif
#if MICROPY_HW_USB_CDC
if (tud_cdc_connected()) {
for (size_t i = 0; i < len;) {
uint32_t n = len - i;
if (n > CFG_TUD_CDC_EP_BUFSIZE) {
n = CFG_TUD_CDC_EP_BUFSIZE;
}
int timeout = 0;
// Wait with a max of USC_CDC_TIMEOUT ms
while (n > tud_cdc_write_available() && timeout++ < MICROPY_HW_USB_CDC_TX_TIMEOUT) {
MICROPY_EVENT_POLL_HOOK
}
if (timeout >= MICROPY_HW_USB_CDC_TX_TIMEOUT) {
break;
}
uint32_t n2 = tud_cdc_write(str + i, n);
tud_cdc_write_flush();
i += n2;
}
}
#endif
#if MICROPY_PY_OS_DUPTERM
mp_os_dupterm_tx_strn(str, len);
#endif
}
void mp_hal_ticks_cpu_enable(void) {
}
void mp_hal_pin_config(mp_hal_pin_obj_t pin_obj, uint32_t mode, uint32_t pull, uint32_t drive, uint32_t alt) {
ra_gpio_config(pin_obj->pin, mode, pull, drive, alt);
}
/*******************************************************************************/
// MAC address
// Generate a random locally administered MAC address (LAA)
void mp_hal_generate_laa_mac(int idx, uint8_t buf[6]) {
uint8_t *id = (uint8_t *)MP_HAL_UNIQUE_ID_ADDRESS;
buf[0] = 0x02; // LAA range
buf[1] = (id[11] << 4) | (id[10] & 0xf);
buf[2] = (id[9] << 4) | (id[8] & 0xf);
buf[3] = (id[7] << 4) | (id[6] & 0xf);
buf[4] = id[2];
buf[5] = (id[0] << 2) | idx;
}
// A board can override this if needed
MP_WEAK void mp_hal_get_mac(int idx, uint8_t buf[6]) {
mp_hal_generate_laa_mac(idx, buf);
}
void mp_hal_get_mac_ascii(int idx, size_t chr_off, size_t chr_len, char *dest) {
static const char hexchr[16] = "0123456789ABCDEF";
uint8_t mac[6];
mp_hal_get_mac(idx, mac);
for (; chr_len; ++chr_off, --chr_len) {
*dest++ = hexchr[mac[chr_off >> 1] >> (4 * (1 - (chr_off & 1))) & 0xf];
}
}
#if MICROPY_HW_ENABLE_USBDEV
void usbfs_interrupt_handler(void) {
IRQn_Type irq = R_FSP_CurrentIrqGet();
R_BSP_IrqStatusClear(irq);
#if CFG_TUSB_RHPORT0_MODE & OPT_MODE_HOST
tuh_int_handler(0);
#endif
#if CFG_TUSB_RHPORT0_MODE & OPT_MODE_DEVICE
tud_int_handler(0);
#endif
}
void usbfs_resume_handler(void) {
IRQn_Type irq = R_FSP_CurrentIrqGet();
R_BSP_IrqStatusClear(irq);
#if CFG_TUSB_RHPORT0_MODE & OPT_MODE_HOST
tuh_int_handler(0);
#endif
#if CFG_TUSB_RHPORT0_MODE & OPT_MODE_DEVICE
tud_int_handler(0);
#endif
}
void usbfs_d0fifo_handler(void) {
IRQn_Type irq = R_FSP_CurrentIrqGet();
R_BSP_IrqStatusClear(irq);
#if CFG_TUSB_RHPORT0_MODE & OPT_MODE_HOST
tuh_int_handler(0);
#endif
#if CFG_TUSB_RHPORT0_MODE & OPT_MODE_DEVICE
tud_int_handler(0);
#endif
}
void usbfs_d1fifo_handler(void) {
IRQn_Type irq = R_FSP_CurrentIrqGet();
R_BSP_IrqStatusClear(irq);
#if CFG_TUSB_RHPORT0_MODE & OPT_MODE_HOST
tuh_int_handler(0);
#endif
#if CFG_TUSB_RHPORT0_MODE & OPT_MODE_DEVICE
tud_int_handler(0);
#endif
}
void usbhs_interrupt_handler(void) {
IRQn_Type irq = R_FSP_CurrentIrqGet();
R_BSP_IrqStatusClear(irq);
#if CFG_TUSB_RHPORT1_MODE & OPT_MODE_HOST
tuh_int_handler(1);
#endif
#if CFG_TUSB_RHPORT1_MODE & OPT_MODE_DEVICE
tud_int_handler(1);
#endif
}
void usbhs_d0fifo_handler(void) {
IRQn_Type irq = R_FSP_CurrentIrqGet();
R_BSP_IrqStatusClear(irq);
#if CFG_TUSB_RHPORT1_MODE & OPT_MODE_HOST
tuh_int_handler(1);
#endif
#if CFG_TUSB_RHPORT1_MODE & OPT_MODE_DEVICE
tud_int_handler(1);
#endif
}
void usbhs_d1fifo_handler(void) {
IRQn_Type irq = R_FSP_CurrentIrqGet();
R_BSP_IrqStatusClear(irq);
#if CFG_TUSB_RHPORT1_MODE & OPT_MODE_HOST
tuh_int_handler(1);
#endif
#if CFG_TUSB_RHPORT1_MODE & OPT_MODE_DEVICE
tud_int_handler(1);
#endif
}
#endif
MP_REGISTER_ROOT_POINTER(struct _machine_uart_obj_t *pyb_stdio_uart);
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