Add software UART and battery monitor
tmk
parent
01fa462e2c
commit
862f519e24
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@ -53,6 +53,7 @@ SRC += keymap_common.c \
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matrix.c \
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led.c \
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serial_uart.c \
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suart.S \
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rn42.c \
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main.c
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@ -76,6 +76,13 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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#endif
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/* for debug */
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#define SUART_OUT_PORT PORTD
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#define SUART_OUT_BIT 0
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#define SUART_IN_PIN PIND
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#define SUART_IN_BIT 1
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/*
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* Feature disable options
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* These options are also useful to firmware size reduction.
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@ -12,10 +12,16 @@
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#include "action.h"
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#include "action_util.h"
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#include "wait.h"
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#include "suart.h"
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bool config_mode = false;
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static int8_t sendchar_func(uint8_t c)
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{
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sendchar(c); // LUFA
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xmit(c); // SUART
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}
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static void SetupHardware(void)
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{
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/* Disable watchdog if enabled by bootloader/fuses */
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@ -32,7 +38,16 @@ static void SetupHardware(void)
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// for Console_Task
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USB_Device_EnableSOFEvents();
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print_set_sendchar(sendchar);
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print_set_sendchar(sendchar_func);
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// SUART PD0:output, PD1:input
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DDRD |= (1<<0);
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PORTD |= (1<<0);
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DDRD &= ~(1<<1);
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PORTD |= (1<<1);
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// CTS control
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CTS_INIT();
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}
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static bool force_usb = false;
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@ -70,6 +85,12 @@ int main(void)
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sleep_led_init();
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#endif
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// ADC for battery
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//ADMUX = (1<<REFS0); // Ref:AVCC, Input:ADC0(PF0)
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ADMUX = (1<<REFS1) | (1<<REFS0); // Ref:AVCC, Input:ADC0(PF0)
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ADCSRA = (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0); // Prescale:128
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ADCSRA |= (1<<ADEN); // enable ADC
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print("Keyboard start.\n");
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while (1) {
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/*
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@ -89,7 +110,12 @@ int main(void)
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int16_t c;
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if (config_mode) {
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while ((c = serial_recv2()) != -1) xprintf("%c", c);
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while ((c = serial_recv2()) != -1) {
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// without flow control it'll fail to receive data when flooded
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CTS_HI();
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xprintf("%c", c);
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CTS_LO();
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}
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} else {
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while ((c = serial_recv2()) != -1) {
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// LED Out report: 0xFE, 0x02, 0x01, <leds>
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@ -146,6 +172,7 @@ bool command_extra(uint8_t code)
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print("a: Bluetooth auto connect\n");
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print("del: Bluetooth disconnect\n");
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print("i: info\n");
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print("b: battery voltage\n");
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if (config_mode) {
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return true;
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@ -208,6 +235,22 @@ bool command_extra(uint8_t code)
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xprintf("rn42_ready(): %X\n", rn42_ready());
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xprintf("config_mode: %X\n", config_mode);
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return true;
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case KC_B:
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// battery monitor
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ADCSRA |= (1<<ADEN) | (1<<ADSC);
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while (ADCSRA & (1<<ADSC)) ;
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uint16_t bat = ADCL;
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bat = ADCH<<8 | bat;
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xprintf("BAT: %04X\n", bat);
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ADCSRA |= (1<<ADEN) | (1<<ADSC);
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while (ADCSRA & (1<<ADSC)) ;
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bat = ADCL;
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bat = ADCH<<8 | bat;
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xprintf("BAT: %04X\n", bat);
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ADCSRA &= ~(1<<ADEN);
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return true;
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default:
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if (config_mode)
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return true;
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@ -70,9 +70,11 @@ static uint8_t keyboard_leds(void) { return 0; }
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static void send_keyboard(report_keyboard_t *report)
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{
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// wake from deep sleep
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/*
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PORTD |= (1<<5); // high
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wait_ms(5);
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PORTD &= ~(1<<5); // low
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*/
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serial_send(0xFD); // Raw report mode
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serial_send(9); // length
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@ -90,9 +92,11 @@ static void send_keyboard(report_keyboard_t *report)
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static void send_mouse(report_mouse_t *report)
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{
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// wake from deep sleep
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/*
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PORTD |= (1<<5); // high
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wait_ms(5);
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PORTD &= ~(1<<5); // low
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*/
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serial_send(0xFD); // Raw report mode
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serial_send(5); // length
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@ -3,6 +3,11 @@
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#include <stdbool.h>
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// RN-42 CTS pin
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#define CTS_INIT() (DDRD |= (1<<5))
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#define CTS_HI() (PORTD |= (1<<5))
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#define CTS_LO() (PORTD &= ~(1<<5))
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host_driver_t rn42_driver;
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host_driver_t rn42_config_driver;
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@ -0,0 +1,156 @@
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;---------------------------------------------------------------------------;
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; Software implemented UART module ;
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; (C)ChaN, 2005 (http://elm-chan.org/) ;
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;---------------------------------------------------------------------------;
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; Bit rate settings:
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;
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; 1MHz 2MHz 4MHz 6MHz 8MHz 10MHz 12MHz 16MHz 20MHz
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; 2.4kbps 138 - - - - - - - -
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; 4.8kbps 68 138 - - - - - - -
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; 9.6kbps 33 68 138 208 - - - - -
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; 19.2kbps - 33 68 102 138 173 208 - -
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; 38.4kbps - - 33 50 68 85 102 138 172
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; 57.6kbps - - 21 33 44 56 68 91 114
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; 115.2kbps - - - - 21 27 33 44 56
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.nolist
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#include <avr/io.h>
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.list
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#define BPS 44 /* Bit delay. (see above table) */
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#define BIDIR 0 /* 0:Separated Tx/Rx, 1:Shared Tx/Rx */
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#define OUT_1 sbi _SFR_IO_ADDR(SUART_OUT_PORT), SUART_OUT_BIT /* Output 1 */
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#define OUT_0 cbi _SFR_IO_ADDR(SUART_OUT_PORT), SUART_OUT_BIT /* Output 0 */
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#define SKIP_IN_1 sbis _SFR_IO_ADDR(SUART_IN_PIN), SUART_IN_BIT /* Skip if 1 */
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#define SKIP_IN_0 sbic _SFR_IO_ADDR(SUART_IN_PIN), SUART_IN_BIT /* Skip if 0 */
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#ifdef SPM_PAGESIZE
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.macro _LPMI reg
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lpm \reg, Z+
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.endm
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.macro _MOVW dh,dl, sh,sl
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movw \dl, \sl
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.endm
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#else
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.macro _LPMI reg
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lpm
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mov \reg, r0
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adiw ZL, 1
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.endm
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.macro _MOVW dh,dl, sh,sl
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mov \dl, \sl
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mov \dh, \sh
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.endm
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#endif
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;---------------------------------------------------------------------------;
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; Transmit a byte in serial format of N81
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;
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;Prototype: void xmit (uint8_t data);
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;Size: 16 words
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.global xmit
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.func xmit
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xmit:
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#if BIDIR
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ldi r23, BPS-1 ;Pre-idle time for bidirectional data line
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5: dec r23 ;
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brne 5b ;/
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#endif
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in r0, _SFR_IO_ADDR(SREG) ;Save flags
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com r24 ;C = start bit
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ldi r25, 10 ;Bit counter
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cli ;Start critical section
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1: ldi r23, BPS-1 ;----- Bit transferring loop
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2: dec r23 ;Wait for a bit time
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brne 2b ;/
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brcs 3f ;MISO = bit to be sent
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OUT_1 ;
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3: brcc 4f ;
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OUT_0 ;/
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4: lsr r24 ;Get next bit into C
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dec r25 ;All bits sent?
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brne 1b ; no, coutinue
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out _SFR_IO_ADDR(SREG), r0 ;End of critical section
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ret
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.endfunc
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;---------------------------------------------------------------------------;
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; Receive a byte
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;
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;Prototype: uint8_t rcvr (void);
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;Size: 19 words
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.global rcvr
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.func rcvr
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rcvr:
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in r0, _SFR_IO_ADDR(SREG) ;Save flags
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ldi r24, 0x80 ;Receiving shift reg
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cli ;Start critical section
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1: SKIP_IN_1 ;Wait for idle
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rjmp 1b
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2: SKIP_IN_0 ;Wait for start bit
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rjmp 2b
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ldi r25, BPS/2 ;Wait for half bit time
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3: dec r25
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brne 3b
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4: ldi r25, BPS ;----- Bit receiving loop
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5: dec r25 ;Wait for a bit time
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brne 5b ;/
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lsr r24 ;Next bit
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SKIP_IN_0 ;Get a data bit into r24.7
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ori r24, 0x80
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brcc 4b ;All bits received? no, continue
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out _SFR_IO_ADDR(SREG), r0 ;End of critical section
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ret
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.endfunc
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; Not wait for start bit. This should be called after detecting start bit.
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.global recv
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.func recv
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recv:
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in r0, _SFR_IO_ADDR(SREG) ;Save flags
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ldi r24, 0x80 ;Receiving shift reg
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cli ;Start critical section
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;1: SKIP_IN_1 ;Wait for idle
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; rjmp 1b
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;2: SKIP_IN_0 ;Wait for start bit
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; rjmp 2b
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ldi r25, BPS/2 ;Wait for half bit time
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3: dec r25
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brne 3b
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4: ldi r25, BPS ;----- Bit receiving loop
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5: dec r25 ;Wait for a bit time
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brne 5b ;/
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lsr r24 ;Next bit
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SKIP_IN_0 ;Get a data bit into r24.7
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ori r24, 0x80
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brcc 4b ;All bits received? no, continue
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ldi r25, BPS/2 ;Wait for half bit time
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6: dec r25
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brne 6b
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7: SKIP_IN_1 ;Wait for stop bit
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rjmp 7b
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out _SFR_IO_ADDR(SREG), r0 ;End of critical section
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ret
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.endfunc
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@ -0,0 +1,8 @@
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#ifndef SUART
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#define SUART
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void xmit(uint8_t);
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uint8_t rcvr(void);
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uint8_t recv(void);
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#endif /* SUART */
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