$(TOP)/watch-library/hardware/hal/src/hal_gpio.c \
$(TOP)/watch-library/hardware/hal/src/hal_i2c_m_sync.c \
$(TOP)/watch-library/hardware/hal/src/hal_spi_m_sync.c \
+ $(TOP)/watch-library/hardware/hal/src/hal_usart_sync.c \
$(TOP)/watch-library/hardware/hal/src/hal_init.c \
$(TOP)/watch-library/hardware/hal/src/hal_io.c \
$(TOP)/watch-library/hardware/hal/src/hal_slcd_sync.c \
#include <hal_ext_irq.h>
#include <hal_i2c_m_sync.h>
#include <hal_spi_m_sync.h>
+#include <hal_usart_sync.h>
#include <hal_delay.h>
#include <hal_slcd_sync.h>
extern struct i2c_m_sync_desc I2C_0;
+extern struct usart_sync_descriptor USART_0;
+
extern struct slcd_sync_descriptor SEGMENT_LCD_0;
void I2C_0_CLOCK_init(void);
* SOFTWARE.
*/
+#include "watch_uart.h"
+#include <string.h>
+
+struct usart_sync_descriptor USART_0;
+struct io_descriptor *uart_io;
+
+void watch_enable_uart(const uint8_t tx_pin, const uint8_t rx_pin, uint32_t baud) {
+ SERCOM_USART_CTRLA_Type ctrla;
+ SERCOM_USART_CTRLB_Type ctrlb;
+ ctrla.reg = SERCOM_USART_CTRLA_DORD | SERCOM_USART_CTRLA_MODE(1);
+ ctrlb.reg = SERCOM_USART_CTRLB_CHSIZE(0);
+
+ 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)) {
+ // wait
+ }
+
+ usart_sync_init(&USART_0, SERCOM3, (void *)NULL);
+
+ SERCOM3->USART.CTRLA.reg &= ~SERCOM_USART_CTRLA_ENABLE;
+
+ switch (tx_pin) {
+ case A2:
+ gpio_set_pin_direction(tx_pin, GPIO_DIRECTION_OUT);
+ gpio_set_pin_function(tx_pin, PINMUX_PB02C_SERCOM3_PAD0);
+ ctrla.reg |= SERCOM_USART_CTRLA_TXPO(0);
+ ctrlb.reg |= SERCOM_USART_CTRLB_TXEN;
+ break;
+ case A4:
+ gpio_set_pin_direction(tx_pin, GPIO_DIRECTION_OUT);
+ gpio_set_pin_function(tx_pin, PINMUX_PB00C_SERCOM3_PAD2);
+ ctrla.reg |= SERCOM_USART_CTRLA_TXPO(1);
+ ctrlb.reg |= SERCOM_USART_CTRLB_TXEN;
+ break;
+ default:
+ break;
+ }
+
+ switch (rx_pin) {
+ case A1:
+ gpio_set_pin_direction(rx_pin, GPIO_DIRECTION_IN);
+ gpio_set_pin_function(rx_pin, PINMUX_PB01C_SERCOM3_PAD3);
+ ctrla.reg |= SERCOM_USART_CTRLA_RXPO(3);
+ ctrlb.reg |= SERCOM_USART_CTRLB_RXEN;
+ break;
+ case A2:
+ gpio_set_pin_direction(rx_pin, GPIO_DIRECTION_IN);
+ gpio_set_pin_function(rx_pin, PINMUX_PB02C_SERCOM3_PAD0);
+ ctrla.reg |= SERCOM_USART_CTRLA_RXPO(0);
+ ctrlb.reg |= SERCOM_USART_CTRLB_RXEN;
+ break;
+ case A3:
+ gpio_set_pin_direction(rx_pin, GPIO_DIRECTION_IN);
+ gpio_set_pin_function(rx_pin, PINMUX_PB03C_SERCOM3_PAD1);
+ ctrla.reg |= SERCOM_USART_CTRLA_RXPO(1);
+ ctrlb.reg |= SERCOM_USART_CTRLB_RXEN;
+ break;
+ case A4:
+ gpio_set_pin_direction(rx_pin, GPIO_DIRECTION_IN);
+ gpio_set_pin_function(rx_pin, PINMUX_PB00C_SERCOM3_PAD2);
+ ctrla.reg |= SERCOM_USART_CTRLA_RXPO(2);
+ ctrlb.reg |= SERCOM_USART_CTRLB_RXEN;
+ break;
+ default:
+ break;
+ }
+ SERCOM3->USART.CTRLA.reg = ctrla.reg;
+ SERCOM3->USART.CTRLB.reg = ctrlb.reg;
+
+ if (hri_usbdevice_get_CTRLA_ENABLE_bit(USB)) {
+ uint64_t br = 65536 - ((65536 * 16.0f * baud) / 8000000);
+ SERCOM3->USART.BAUD.reg = (uint16_t)br;
+ } else {
+ uint64_t br = 65536 - ((65536 * 16.0f * baud) / 4000000);
+ SERCOM3->USART.BAUD.reg = (uint16_t)br;
+ }
+
+ SERCOM3->USART.CTRLA.reg |= SERCOM_USART_CTRLA_ENABLE;
+
+ usart_sync_enable(&USART_0);
+ usart_sync_get_io_descriptor(&USART_0, &uart_io);
+}
+
+void watch_uart_puts(char *s) {
+ io_write(uart_io, (uint8_t *)s, strlen(s));
+}
+
+char watch_uart_getc(void) {
+ uint8_t retval;
+ io_read(uart_io, &retval, 1);
+ return retval;
+}
+
+// Begin deprecated functions
+
/*
* UART methods are Copyright (c) 2014-2017, Alex Taradov <alex@taradov.com>
* All rights reserved.
* POSSIBILITY OF SUCH DAMAGE.
*/
-#include "watch_uart.h"
#include "peripheral_clk_config.h"
void watch_enable_debug_uart(uint32_t baud) {
#include "watch.h"
-/** @addtogroup debug Debug UART
- * @brief This section covers functions related to the debug UART, available on
- * pin D1 of the 9-pin connector.
- * @warning These functions were used early on in development, before the TinyUSB
- * CDC was implemented. You can now print debug messages to the USB console
- * using printf, rendering this bit irrelevant. These methods will likely
- * be refactored out in the future, in favor of a more full-featured UART
- * on the nine-pin connector.
+/** @addtogroup debug UART
+ * @brief This section covers functions related to the UART peripheral.
**/
/// @{
+
+/** @brief Initializes the debug UART.
+ * @param tx_pin The pin the watch will use to transmit, or 0 for a receive-only UART.
+ * If specified, must be either A2 or A4.
+ * @param rx_pin The pin the watch will use to receive, or 0 for a transmit-only UART.
+ * If specified, must be A1, A2, A3 or A4 (pin A0 cannot receive UART data).
+ * @param baud The baud rate for the UART. A typical value is 19200.
+ */
+void watch_enable_uart(const uint8_t tx_pin, const uint8_t rx_pin, uint32_t baud);
+
+/** @brief Transmits a string of bytes on the UART's TX pin.
+ * @param s A null-terminated string containing the bytes you wish to transmit.
+ */
+void watch_uart_puts(char *s);
+
+/** @brief Receives a single byte from the UART's RX pin.
+ * @return the received byte.
+ * @note This method will block until a byte is received!
+ */
+char watch_uart_getc(void);
+
+// Begin deprecated functions:
+
/** @brief Initializes the debug UART.
* @param baud The baud rate
*/
-__attribute__((deprecated("Use printf to log debug messages over USB.")))
+__attribute__((deprecated("Use watch_enable_uart to enable the UART.")))
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.
*/
-__attribute__((deprecated("Use printf to log debug messages over USB.")))
+__attribute__((deprecated("Use watch_uart_puts to print to the UART, or printf to log debug messages over USB.")))
void watch_debug_putc(char c);
/** @brief Outputs a string on the debug UART.
* @param s A null-terminated string.
*/
-__attribute__((deprecated("Use printf to log debug messages over USB.")))
+__attribute__((deprecated("Use watch_uart_puts to print to the UART, or printf to log debug messages over USB.")))
void watch_debug_puts(char *s);
/// @}
#endif
* SOFTWARE.
*/
- /*
- * 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.
- */
-
#include "watch_uart.h"
#include "peripheral_clk_config.h"
+static bool tx_enable = false;
+static bool rx_enable = false;
+
+void watch_enable_uart(const uint8_t tx_pin, const uint8_t rx_pin, uint32_t baud) {
+ tx_enable = !!tx_pin;
+ rx_enable = !!rx_pin;
+}
+
+void watch_uart_puts(char *s) {
+ if (tx_enable) {
+ // TODO: hook up to UI
+ }
+}
+
+char watch_uart_getc(void) {
+ if (rx_enable) {
+ // TODO: hook up to UI
+ }
+ return 0;
+}
+
void watch_enable_debug_uart(uint32_t baud) {}
void watch_debug_putc(char c) {}
projects / sensor-watch.git / commitdiff