diff options
Diffstat (limited to 'protocol')
| -rw-r--r-- | protocol/lufa/lufa.c | 15 | ||||
| -rw-r--r-- | protocol/mbed/HIDKeyboard.cpp | 271 | ||||
| -rw-r--r-- | protocol/mbed/HIDKeyboard.h | 31 | ||||
| -rw-r--r-- | protocol/mbed/mbed_driver.cpp | 41 | ||||
| -rw-r--r-- | protocol/mbed/mbed_driver.h | 3 | ||||
| -rw-r--r-- | protocol/ps2.h | 65 | ||||
| -rw-r--r-- | protocol/ps2_busywait.c | 16 | ||||
| -rw-r--r-- | protocol/ps2_io.h | 15 | ||||
| -rw-r--r-- | protocol/ps2_io_avr.c | 74 | ||||
| -rw-r--r-- | protocol/ps2_io_mbed.c | 60 | ||||
| -rw-r--r-- | protocol/serial_uart.c | 21 |
11 files changed, 546 insertions, 66 deletions
diff --git a/protocol/lufa/lufa.c b/protocol/lufa/lufa.c index 16a602df1..6802f3b63 100644 --- a/protocol/lufa/lufa.c +++ b/protocol/lufa/lufa.c @@ -148,10 +148,23 @@ static void Console_Task(void) */ void EVENT_USB_Device_Connect(void) { + /* For battery powered device */ + if (!USB_IsInitialized) { + USB_Init(); + USB_Device_EnableSOFEvents(); + } } void EVENT_USB_Device_Disconnect(void) { + /* For battery powered device */ +/* TODO: This doesn't work. After several plug in/outs can not be enumerated. + if (USB_IsInitialized) { + USB_Disable(); // Disable all interrupts + USB_Controller_Enable(); + USB_INT_Enable(USB_INT_VBUSTI); + } +*/ } void EVENT_USB_Device_Reset(void) @@ -574,7 +587,7 @@ int main(void) print("Keyboard start.\n"); while (1) { while (USB_DeviceState == DEVICE_STATE_Suspended) { - suspend_power_down(); + suspend_power_down(WDTO_120MS); if (USB_Device_RemoteWakeupEnabled && suspend_wakeup_condition()) { USB_Device_SendRemoteWakeup(); } diff --git a/protocol/mbed/HIDKeyboard.cpp b/protocol/mbed/HIDKeyboard.cpp new file mode 100644 index 000000000..947077cd2 --- /dev/null +++ b/protocol/mbed/HIDKeyboard.cpp @@ -0,0 +1,271 @@ +#include <stdint.h> +#include "USBHID.h" +#include "USBHID_Types.h" +#include "USBDescriptor.h" +#include "HIDKeyboard.h" + +#define DEFAULT_CONFIGURATION (1) + + +HIDKeyboard::HIDKeyboard(uint16_t vendor_id, uint16_t product_id, uint16_t product_release): USBDevice(vendor_id, product_id, product_release) +{ + USBDevice::connect(); +} + +bool HIDKeyboard::sendReport(report_keyboard_t report) { + USBDevice::write(EP1IN, report.raw, sizeof(report), MAX_PACKET_SIZE_EP1); + return true; +} + +uint8_t HIDKeyboard::leds() { + return led_state; +} + +bool HIDKeyboard::USBCallback_setConfiguration(uint8_t configuration) { + if (configuration != DEFAULT_CONFIGURATION) { + return false; + } + + // Configure endpoints > 0 + addEndpoint(EPINT_IN, MAX_PACKET_SIZE_EPINT); + //addEndpoint(EPINT_OUT, MAX_PACKET_SIZE_EPINT); + + // We activate the endpoint to be able to recceive data + //readStart(EPINT_OUT, MAX_PACKET_SIZE_EPINT); + return true; +} + + +uint8_t * HIDKeyboard::stringImanufacturerDesc() { + static uint8_t stringImanufacturerDescriptor[] = { + 0x18, /*bLength*/ + STRING_DESCRIPTOR, /*bDescriptorType 0x03*/ + 't',0,'m',0,'k',0,'-',0,'k',0,'b',0,'d',0,'.',0,'c',0,'o',0,'m',0 /*bString iManufacturer*/ + }; + return stringImanufacturerDescriptor; +} + +uint8_t * HIDKeyboard::stringIproductDesc() { + static uint8_t stringIproductDescriptor[] = { + 0x0a, /*bLength*/ + STRING_DESCRIPTOR, /*bDescriptorType 0x03*/ + 'm',0,'b',0,'e',0,'d',0 /*bString iProduct*/ + }; + return stringIproductDescriptor; +} + +uint8_t * HIDKeyboard::stringIserialDesc() { + static uint8_t stringIserialDescriptor[] = { + 0x04, /*bLength*/ + STRING_DESCRIPTOR, /*bDescriptorType 0x03*/ + '0',0 /*bString iSerial*/ + }; + return stringIserialDescriptor; +} + +uint8_t * HIDKeyboard::reportDesc() { + static uint8_t reportDescriptor[] = { + USAGE_PAGE(1), 0x01, // Generic Desktop + USAGE(1), 0x06, // Keyboard + COLLECTION(1), 0x01, // Application + + USAGE_PAGE(1), 0x07, // Key Codes + USAGE_MINIMUM(1), 0xE0, + USAGE_MAXIMUM(1), 0xE7, + LOGICAL_MINIMUM(1), 0x00, + LOGICAL_MAXIMUM(1), 0x01, + REPORT_SIZE(1), 0x01, + REPORT_COUNT(1), 0x08, + INPUT(1), 0x02, // Data, Variable, Absolute + + REPORT_COUNT(1), 0x01, + REPORT_SIZE(1), 0x08, + INPUT(1), 0x01, // Constant + + REPORT_COUNT(1), 0x05, + REPORT_SIZE(1), 0x01, + USAGE_PAGE(1), 0x08, // LEDs + USAGE_MINIMUM(1), 0x01, + USAGE_MAXIMUM(1), 0x05, + OUTPUT(1), 0x02, // Data, Variable, Absolute + + REPORT_COUNT(1), 0x01, + REPORT_SIZE(1), 0x03, + OUTPUT(1), 0x01, // Constant + + + REPORT_COUNT(1), 0x06, + REPORT_SIZE(1), 0x08, + LOGICAL_MINIMUM(1), 0x00, + LOGICAL_MAXIMUM(1), 0xFF, + USAGE_PAGE(1), 0x07, // Key Codes + USAGE_MINIMUM(1), 0x00, + USAGE_MAXIMUM(1), 0xFF, + INPUT(1), 0x00, // Data, Array + END_COLLECTION(0), + }; + reportLength = sizeof(reportDescriptor); + return reportDescriptor; +} + +uint16_t HIDKeyboard::reportDescLength() { + reportDesc(); + return reportLength; +} + +#define TOTAL_DESCRIPTOR_LENGTH ((1 * CONFIGURATION_DESCRIPTOR_LENGTH) \ + + (1 * INTERFACE_DESCRIPTOR_LENGTH) \ + + (1 * HID_DESCRIPTOR_LENGTH) \ + + (1 * ENDPOINT_DESCRIPTOR_LENGTH)) +uint8_t * HIDKeyboard::configurationDesc() { + static uint8_t configurationDescriptor[] = { + CONFIGURATION_DESCRIPTOR_LENGTH,// bLength + CONFIGURATION_DESCRIPTOR, // bDescriptorType + LSB(TOTAL_DESCRIPTOR_LENGTH), // wTotalLength (LSB) + MSB(TOTAL_DESCRIPTOR_LENGTH), // wTotalLength (MSB) + 0x01, // bNumInterfaces + DEFAULT_CONFIGURATION, // bConfigurationValue + 0x00, // iConfiguration + C_RESERVED | C_REMOTE_WAKEUP, // bmAttributes + C_POWER(100), // bMaxPowerHello World from Mbed + + INTERFACE_DESCRIPTOR_LENGTH, // bLength + INTERFACE_DESCRIPTOR, // bDescriptorType + 0x00, // bInterfaceNumber + 0x00, // bAlternateSetting + 0x01, // bNumEndpoints + HID_CLASS, // bInterfaceClass + 1, // bInterfaceSubClass (boot) + 1, // bInterfaceProtocol (keyboard) + 0x00, // iInterface + + HID_DESCRIPTOR_LENGTH, // bLength + HID_DESCRIPTOR, // bDescriptorType + LSB(HID_VERSION_1_11), // bcdHID (LSB) + MSB(HID_VERSION_1_11), // bcdHID (MSB) + 0x00, // bCountryCode + 0x01, // bNumDescriptors + REPORT_DESCRIPTOR, // bDescriptorType + (uint8_t)(LSB(reportDescLength())), // wDescriptorLength (LSB) + (uint8_t)(MSB(reportDescLength())), // wDescriptorLength (MSB) + + ENDPOINT_DESCRIPTOR_LENGTH, // bLength + ENDPOINT_DESCRIPTOR, // bDescriptorType + PHY_TO_DESC(EP1IN), // bEndpointAddress + E_INTERRUPT, // bmAttributes + LSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (LSB) + MSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (MSB) + 1, // bInterval (milliseconds) + }; + return configurationDescriptor; +} + +#if 0 +uint8_t * HIDKeyboard::deviceDesc() { + static uint8_t deviceDescriptor[] = { + DEVICE_DESCRIPTOR_LENGTH, /* bLength */ + DEVICE_DESCRIPTOR, /* bDescriptorType */ + LSB(USB_VERSION_2_0), /* bcdUSB (LSB) */ + MSB(USB_VERSION_2_0), /* bcdUSB (MSB) */ + 0x00, /* bDeviceClass */ + 0x00, /* bDeviceSubClass */ + 0x00, /* bDeviceprotocol */ + MAX_PACKET_SIZE_EP0, /* bMaxPacketSize0 */ + (uint8_t)(LSB(0xfeed)), /* idVendor (LSB) */ + (uint8_t)(MSB(0xfeed)), /* idVendor (MSB) */ + (uint8_t)(LSB(0x1bed)), /* idProduct (LSB) */ + (uint8_t)(MSB(0x1bed)), /* idProduct (MSB) */ + (uint8_t)(LSB(0x0002)), /* bcdDevice (LSB) */ + (uint8_t)(MSB(0x0002)), /* bcdDevice (MSB) */ + 0, /* iManufacturer */ + 0, /* iProduct */ + 0, /* iSerialNumber */ + 0x01 /* bNumConfigurations */ + }; + return deviceDescriptor; +} +#endif + +bool HIDKeyboard::USBCallback_request() { + bool success = false; + CONTROL_TRANSFER * transfer = getTransferPtr(); + uint8_t *hidDescriptor; + + // Process additional standard requests + + if ((transfer->setup.bmRequestType.Type == STANDARD_TYPE)) + { + switch (transfer->setup.bRequest) + { + case GET_DESCRIPTOR: + switch (DESCRIPTOR_TYPE(transfer->setup.wValue)) + { + case REPORT_DESCRIPTOR: + if ((reportDesc() != NULL) \ + && (reportDescLength() != 0)) + { + transfer->remaining = reportDescLength(); + transfer->ptr = reportDesc(); + transfer->direction = DEVICE_TO_HOST; + success = true; + } + break; + case HID_DESCRIPTOR: + // Find the HID descriptor, after the configuration descriptor + hidDescriptor = findDescriptor(HID_DESCRIPTOR); + if (hidDescriptor != NULL) + { + transfer->remaining = HID_DESCRIPTOR_LENGTH; + transfer->ptr = hidDescriptor; + transfer->direction = DEVICE_TO_HOST; + success = true; + } + break; + + default: + break; + } + break; + default: + break; + } + } + + // Process class-specific requests + if (transfer->setup.bmRequestType.Type == CLASS_TYPE) + { + switch (transfer->setup.bRequest) { + case SET_REPORT: + // LED indicator + // TODO: check Interface and Report length? + // if (transfer->setup.wIndex == INTERFACE_KEYBOAD) { } + // if (transfer->setup.wLength == 1) + + transfer->remaining = 1; + //transfer->ptr = ?? what ptr should be set when OUT(not used?) + transfer->direction = HOST_TO_DEVICE; + transfer->notify = true; /* notify with USBCallback_requestCompleted */ + success = true; + default: + break; + } + } + + return success; +} + +void HIDKeyboard::USBCallback_requestCompleted(uint8_t * buf, uint32_t length) +{ + if (length > 0) { + CONTROL_TRANSFER *transfer = getTransferPtr(); + if (transfer->setup.bmRequestType.Type == CLASS_TYPE) { + switch (transfer->setup.bRequest) { + case SET_REPORT: + led_state = buf[0]; + break; + default: + break; + } + } + } +} diff --git a/protocol/mbed/HIDKeyboard.h b/protocol/mbed/HIDKeyboard.h new file mode 100644 index 000000000..c537e5ece --- /dev/null +++ b/protocol/mbed/HIDKeyboard.h @@ -0,0 +1,31 @@ +#ifndef HIDKEYBOARD_H + +#include "stdint.h" +#include "stdbool.h" +#include "USBHID.h" +#include "report.h" + + +class HIDKeyboard : public USBDevice { +public: + HIDKeyboard(uint16_t vendor_id = 0xFEED, uint16_t product_id = 0xabed, uint16_t product_release = 0x0001); + + bool sendReport(report_keyboard_t report); + uint8_t leds(void); +protected: + uint16_t reportLength; + virtual bool USBCallback_setConfiguration(uint8_t configuration); + virtual uint8_t * stringImanufacturerDesc(); + virtual uint8_t * stringIproductDesc(); + virtual uint8_t * stringIserialDesc(); + virtual uint16_t reportDescLength(); + virtual uint8_t * reportDesc(); + virtual uint8_t * configurationDesc(); + //virtual uint8_t * deviceDesc(); + virtual bool USBCallback_request(); + virtual void USBCallback_requestCompleted(uint8_t * buf, uint32_t length); +private: + uint8_t led_state; +}; + +#endif diff --git a/protocol/mbed/mbed_driver.cpp b/protocol/mbed/mbed_driver.cpp new file mode 100644 index 000000000..6c7b16e23 --- /dev/null +++ b/protocol/mbed/mbed_driver.cpp @@ -0,0 +1,41 @@ +#include "HIDKeyboard.h" +#include "host.h" +#include "host_driver.h" +#include "mbed_driver.h" + +HIDKeyboard keyboard; + + +/* Host driver */ +static uint8_t keyboard_leds(void); +static void send_keyboard(report_keyboard_t *report); +static void send_mouse(report_mouse_t *report); +static void send_system(uint16_t data); +static void send_consumer(uint16_t data); + +host_driver_t mbed_driver = { + keyboard_leds, + send_keyboard, + send_mouse, + send_system, + send_consumer +}; + + +static uint8_t keyboard_leds(void) +{ + return keyboard.leds(); +} +static void send_keyboard(report_keyboard_t *report) +{ + keyboard.sendReport(*report); +} +static void send_mouse(report_mouse_t *report) +{ +} +static void send_system(uint16_t data) +{ +} +static void send_consumer(uint16_t data) +{ +} diff --git a/protocol/mbed/mbed_driver.h b/protocol/mbed/mbed_driver.h new file mode 100644 index 000000000..dd1153b43 --- /dev/null +++ b/protocol/mbed/mbed_driver.h @@ -0,0 +1,3 @@ +#include "host_driver.h" + +extern host_driver_t mbed_driver; diff --git a/protocol/ps2.h b/protocol/ps2.h index 483eea720..acde679cf 100644 --- a/protocol/ps2.h +++ b/protocol/ps2.h @@ -39,8 +39,9 @@ POSSIBILITY OF SUCH DAMAGE. #define PS2_H #include <stdbool.h> -#include <util/delay.h> -#include <avr/io.h> +#include "wait.h" +#include "ps2_io.h" +#include "print.h" /* * Primitive PS/2 Library for AVR @@ -92,79 +93,27 @@ uint8_t ps2_host_recv(void); void ps2_host_set_led(uint8_t usb_led); -/* Check port settings for clock and data line */ -#if !(defined(PS2_CLOCK_PORT) && \ - defined(PS2_CLOCK_PIN) && \ - defined(PS2_CLOCK_DDR) && \ - defined(PS2_CLOCK_BIT)) -# error "PS/2 clock port setting is required in config.h" -#endif - -#if !(defined(PS2_DATA_PORT) && \ - defined(PS2_DATA_PIN) && \ - defined(PS2_DATA_DDR) && \ - defined(PS2_DATA_BIT)) -# error "PS/2 data port setting is required in config.h" -#endif - /*-------------------------------------------------------------------- * static functions *------------------------------------------------------------------*/ -static inline void clock_lo(void) -{ - PS2_CLOCK_PORT &= ~(1<<PS2_CLOCK_BIT); - PS2_CLOCK_DDR |= (1<<PS2_CLOCK_BIT); -} -static inline void clock_hi(void) -{ - /* input with pull up */ - PS2_CLOCK_DDR &= ~(1<<PS2_CLOCK_BIT); - PS2_CLOCK_PORT |= (1<<PS2_CLOCK_BIT); -} -static inline bool clock_in(void) -{ - PS2_CLOCK_DDR &= ~(1<<PS2_CLOCK_BIT); - PS2_CLOCK_PORT |= (1<<PS2_CLOCK_BIT); - _delay_us(1); - return PS2_CLOCK_PIN&(1<<PS2_CLOCK_BIT); -} -static inline void data_lo(void) -{ - PS2_DATA_PORT &= ~(1<<PS2_DATA_BIT); - PS2_DATA_DDR |= (1<<PS2_DATA_BIT); -} -static inline void data_hi(void) -{ - /* input with pull up */ - PS2_DATA_DDR &= ~(1<<PS2_DATA_BIT); - PS2_DATA_PORT |= (1<<PS2_DATA_BIT); -} -static inline bool data_in(void) -{ - PS2_DATA_DDR &= ~(1<<PS2_DATA_BIT); - PS2_DATA_PORT |= (1<<PS2_DATA_BIT); - _delay_us(1); - return PS2_DATA_PIN&(1<<PS2_DATA_BIT); -} - static inline uint16_t wait_clock_lo(uint16_t us) { - while (clock_in() && us) { asm(""); _delay_us(1); us--; } + while (clock_in() && us) { asm(""); wait_us(1); us--; } return us; } static inline uint16_t wait_clock_hi(uint16_t us) { - while (!clock_in() && us) { asm(""); _delay_us(1); us--; } + while (!clock_in() && us) { asm(""); wait_us(1); us--; } return us; } static inline uint16_t wait_data_lo(uint16_t us) { - while (data_in() && us) { asm(""); _delay_us(1); us--; } + while (data_in() && us) { asm(""); wait_us(1); us--; } return us; } static inline uint16_t wait_data_hi(uint16_t us) { - while (!data_in() && us) { asm(""); _delay_us(1); us--; } + while (!data_in() && us) { asm(""); wait_us(1); us--; } return us; } diff --git a/protocol/ps2_busywait.c b/protocol/ps2_busywait.c index 05dd7b27e..a64933219 100644 --- a/protocol/ps2_busywait.c +++ b/protocol/ps2_busywait.c @@ -40,8 +40,9 @@ POSSIBILITY OF SUCH DAMAGE. */ #include <stdbool.h> -#include <util/delay.h> +#include "wait.h" #include "ps2.h" +#include "ps2_io.h" #include "debug.h" @@ -58,8 +59,11 @@ uint8_t ps2_error = PS2_ERR_NONE; void ps2_host_init(void) { + clock_init(); + data_init(); + // POR(150-2000ms) plus BAT(300-500ms) may take 2.5sec([3]p.20) - _delay_ms(2500); + wait_ms(2500); inhibit(); } @@ -71,7 +75,7 @@ uint8_t ps2_host_send(uint8_t data) /* terminate a transmission if we have */ inhibit(); - _delay_us(100); // 100us [4]p.13, [5]p.50 + wait_us(100); // 100us [4]p.13, [5]p.50 /* 'Request to Send' and Start bit */ data_lo(); @@ -80,7 +84,7 @@ uint8_t ps2_host_send(uint8_t data) /* Data bit */ for (uint8_t i = 0; i < 8; i++) { - _delay_us(15); + wait_us(15); if (data&(1<<i)) { parity = !parity; data_hi(); @@ -92,13 +96,13 @@ uint8_t ps2_host_send(uint8_t data) } /* Parity bit */ - _delay_us(15); + wait_us(15); if (parity) { data_hi(); } else { data_lo(); } WAIT(clock_hi, 50, 4); WAIT(clock_lo, 50, 5); /* Stop bit */ - _delay_us(15); + wait_us(15); data_hi(); /* Ack */ diff --git a/protocol/ps2_io.h b/protocol/ps2_io.h new file mode 100644 index 000000000..a46a358e7 --- /dev/null +++ b/protocol/ps2_io.h @@ -0,0 +1,15 @@ +#ifndef PS2_IO_H +#define PS2_IO_H + + +void clock_init(void); +void clock_lo(void); +void clock_hi(void); +bool clock_in(void); + +void data_init(void); +void data_lo(void); +void data_hi(void); +bool data_in(void); + +#endif diff --git a/protocol/ps2_io_avr.c b/protocol/ps2_io_avr.c new file mode 100644 index 000000000..be13d6696 --- /dev/null +++ b/protocol/ps2_io_avr.c @@ -0,0 +1,74 @@ +#include <stdbool.h> +#include <util/delay.h> + +/* Check port settings for clock and data line */ +#if !(defined(PS2_CLOCK_PORT) && \ + defined(PS2_CLOCK_PIN) && \ + defined(PS2_CLOCK_DDR) && \ + defined(PS2_CLOCK_BIT)) +# error "PS/2 clock port setting is required in config.h" +#endif + +#if !(defined(PS2_DATA_PORT) && \ + defined(PS2_DATA_PIN) && \ + defined(PS2_DATA_DDR) && \ + defined(PS2_DATA_BIT)) +# error "PS/2 data port setting is required in config.h" +#endif + + +/* + * Clock + */ +void clock_init(void) +{ +} + +void clock_lo(void) +{ + PS2_CLOCK_PORT &= ~(1<<PS2_CLOCK_BIT); + PS2_CLOCK_DDR |= (1<<PS2_CLOCK_BIT); +} + +void clock_hi(void) +{ + /* input with pull up */ + PS2_CLOCK_DDR &= ~(1<<PS2_CLOCK_BIT); + PS2_CLOCK_PORT |= (1<<PS2_CLOCK_BIT); +} + +bool clock_in(void) +{ + PS2_CLOCK_DDR &= ~(1<<PS2_CLOCK_BIT); + PS2_CLOCK_PORT |= (1<<PS2_CLOCK_BIT); + _delay_us(1); + return PS2_CLOCK_PIN&(1<<PS2_CLOCK_BIT); +} + +/* + * Data + */ +void data_init(void) +{ +} + +void data_lo(void) +{ + PS2_DATA_PORT &= ~(1<<PS2_DATA_BIT); + PS2_DATA_DDR |= (1<<PS2_DATA_BIT); +} + +void data_hi(void) +{ + /* input with pull up */ + PS2_DATA_DDR &= ~(1<<PS2_DATA_BIT); + PS2_DATA_PORT |= (1<<PS2_DATA_BIT); +} + +bool data_in(void) +{ + PS2_DATA_DDR &= ~(1<<PS2_DATA_BIT); + PS2_DATA_PORT |= (1<<PS2_DATA_BIT); + _delay_us(1); + return PS2_DATA_PIN&(1<<PS2_DATA_BIT); +} diff --git a/protocol/ps2_io_mbed.c b/protocol/ps2_io_mbed.c new file mode 100644 index 000000000..83bdcef7f --- /dev/null +++ b/protocol/ps2_io_mbed.c @@ -0,0 +1,60 @@ +#include <stdbool.h> +#include "ps2_io.h" +#include "gpio_api.h" + + +static gpio_t clock; +static gpio_t data; + +/* + * Clock + */ +void clock_init(void) +{ + gpio_init(&clock, P0_9); + gpio_mode(&clock, OpenDrain|PullNone); +} + +void clock_lo(void) +{ + gpio_dir(&clock, PIN_OUTPUT); + gpio_write(&clock, 0); +} +void clock_hi(void) +{ + gpio_dir(&clock, PIN_OUTPUT); + gpio_write(&clock, 1); +} + +bool clock_in(void) +{ + gpio_dir(&clock, PIN_INPUT); + return gpio_read(&clock); +} + +/* + * Data + */ +void data_init(void) +{ + gpio_init(&data, P0_8); + gpio_mode(&data, OpenDrain|PullNone); +} + +void data_lo(void) +{ + gpio_dir(&data, PIN_OUTPUT); + gpio_write(&data, 0); +} + +void data_hi(void) +{ + gpio_dir(&data, PIN_OUTPUT); + gpio_write(&data, 1); +} + +bool data_in(void) +{ + gpio_dir(&data, PIN_INPUT); + return gpio_read(&data); +} diff --git a/protocol/serial_uart.c b/protocol/serial_uart.c index 6c0af8817..35df27fd6 100644 --- a/protocol/serial_uart.c +++ b/protocol/serial_uart.c @@ -41,13 +41,29 @@ POSSIBILITY OF SUCH DAMAGE. #include "serial.h" +#if defined(SERIAL_UART_RTS_LO) && defined(SERIAL_UART_RTS_HI) + // Buffer state + // Empty: RBUF_SPACE == RBUF_SIZE(head==tail) + // Last 1 space: RBUF_SPACE == 2 + // Full: RBUF_SPACE == 1(last cell of rbuf be never used.) + #define RBUF_SPACE() (rbuf_head < rbuf_tail ? (rbuf_tail - rbuf_head) : (RBUF_SIZE - rbuf_head + rbuf_tail)) + // allow to send + #define rbuf_check_rts_lo() do { if (RBUF_SPACE() > 2) SERIAL_UART_RTS_LO(); } while (0) + // prohibit to send + #define rbuf_check_rts_hi() do { if (RBUF_SPACE() <= 2) SERIAL_UART_RTS_HI(); } while (0) +#else + #define rbuf_check_rts_lo() + #define rbuf_check_rts_hi() +#endif + + void serial_init(void) { SERIAL_UART_INIT(); } // RX ring buffer -#define RBUF_SIZE 8 +#define RBUF_SIZE 256 static uint8_t rbuf[RBUF_SIZE]; static uint8_t rbuf_head = 0; static uint8_t rbuf_tail = 0; @@ -61,6 +77,7 @@ uint8_t serial_recv(void) data = rbuf[rbuf_tail]; rbuf_tail = (rbuf_tail + 1) % RBUF_SIZE; + rbuf_check_rts_lo(); return data; } @@ -73,6 +90,7 @@ int16_t serial_recv2(void) data = rbuf[rbuf_tail]; rbuf_tail = (rbuf_tail + 1) % RBUF_SIZE; + rbuf_check_rts_lo(); return data; } @@ -90,4 +108,5 @@ ISR(SERIAL_UART_RXD_VECT) rbuf[rbuf_head] = SERIAL_UART_DATA; rbuf_head = next; } + rbuf_check_rts_hi(); } |