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-rw-r--r--platforms/avr/_wait.h38
-rw-r--r--platforms/avr/drivers/i2c_master.c12
-rw-r--r--platforms/avr/drivers/i2c_master.h2
-rw-r--r--platforms/avr/drivers/ps2/ps2_usart.c4
-rw-r--r--platforms/avr/drivers/ssd1306.c329
-rw-r--r--platforms/avr/drivers/ssd1306.h87
-rw-r--r--platforms/avr/platform.mk3
7 files changed, 41 insertions, 434 deletions
diff --git a/platforms/avr/_wait.h b/platforms/avr/_wait.h
index 683db6ae57..c1a598a428 100644
--- a/platforms/avr/_wait.h
+++ b/platforms/avr/_wait.h
@@ -17,6 +17,26 @@
#include <util/delay.h>
+// http://ww1.microchip.com/downloads/en/devicedoc/atmel-0856-avr-instruction-set-manual.pdf
+// page 22: Table 4-2. Arithmetic and Logic Instructions
+/*
+ for (uint16_t i = times; i > 0; i--) {
+ __builtin_avr_delay_cycles(1);
+ }
+
+ .L3: sbiw r24,0 // loop step 1
+ brne .L4 // loop step 2
+ ret
+ .L4: nop // __builtin_avr_delay_cycles(1);
+ sbiw r24,1 // loop step 3
+ rjmp .L3 // loop step 4
+*/
+
+#define AVR_sbiw_clocks 2
+#define AVR_rjmp_clocks 2
+#define AVR_brne_clocks 2
+#define AVR_WAIT_LOOP_OVERHEAD (AVR_sbiw_clocks + AVR_brne_clocks + AVR_sbiw_clocks + AVR_rjmp_clocks)
+
#define wait_ms(ms) \
do { \
if (__builtin_constant_p(ms)) { \
@@ -27,15 +47,15 @@
} \
} \
} while (0)
-#define wait_us(us) \
- do { \
- if (__builtin_constant_p(us)) { \
- _delay_us(us); \
- } else { \
- for (uint16_t i = us; i > 0; i--) { \
- _delay_us(1); \
- } \
- } \
+#define wait_us(us) \
+ do { \
+ if (__builtin_constant_p(us)) { \
+ _delay_us(us); \
+ } else { \
+ for (uint16_t i = us; i > 0; i--) { \
+ __builtin_avr_delay_cycles((F_CPU / 1000000) - AVR_WAIT_LOOP_OVERHEAD); \
+ } \
+ } \
} while (0)
#define wait_cpuclock(n) __builtin_avr_delay_cycles(n)
#define CPU_CLOCK F_CPU
diff --git a/platforms/avr/drivers/i2c_master.c b/platforms/avr/drivers/i2c_master.c
index c1a7b5f72d..524494c99d 100644
--- a/platforms/avr/drivers/i2c_master.c
+++ b/platforms/avr/drivers/i2c_master.c
@@ -64,7 +64,7 @@ static i2c_status_t i2c_start_impl(uint8_t address, uint16_t timeout) {
uint16_t timeout_timer = timer_read();
while (!(TWCR & (1 << TWINT))) {
- if ((timeout != I2C_TIMEOUT_INFINITE) && ((timer_read() - timeout_timer) >= timeout)) {
+ if ((timeout != I2C_TIMEOUT_INFINITE) && (timer_elapsed(timeout_timer) > timeout)) {
return I2C_STATUS_TIMEOUT;
}
}
@@ -81,7 +81,7 @@ static i2c_status_t i2c_start_impl(uint8_t address, uint16_t timeout) {
timeout_timer = timer_read();
while (!(TWCR & (1 << TWINT))) {
- if ((timeout != I2C_TIMEOUT_INFINITE) && ((timer_read() - timeout_timer) >= timeout)) {
+ if ((timeout != I2C_TIMEOUT_INFINITE) && (timer_elapsed(timeout_timer) > timeout)) {
return I2C_STATUS_TIMEOUT;
}
}
@@ -102,7 +102,7 @@ i2c_status_t i2c_start(uint8_t address, uint16_t timeout) {
i2c_status_t status;
do {
status = i2c_start_impl(address, time_slice);
- } while ((status < 0) && ((timeout == I2C_TIMEOUT_INFINITE) || (timer_elapsed(timeout_timer) < timeout)));
+ } while ((status < 0) && ((timeout == I2C_TIMEOUT_INFINITE) || (timer_elapsed(timeout_timer) <= timeout)));
return status;
}
@@ -114,7 +114,7 @@ i2c_status_t i2c_write(uint8_t data, uint16_t timeout) {
uint16_t timeout_timer = timer_read();
while (!(TWCR & (1 << TWINT))) {
- if ((timeout != I2C_TIMEOUT_INFINITE) && ((timer_read() - timeout_timer) >= timeout)) {
+ if ((timeout != I2C_TIMEOUT_INFINITE) && (timer_elapsed(timeout_timer) > timeout)) {
return I2C_STATUS_TIMEOUT;
}
}
@@ -132,7 +132,7 @@ int16_t i2c_read_ack(uint16_t timeout) {
uint16_t timeout_timer = timer_read();
while (!(TWCR & (1 << TWINT))) {
- if ((timeout != I2C_TIMEOUT_INFINITE) && ((timer_read() - timeout_timer) >= timeout)) {
+ if ((timeout != I2C_TIMEOUT_INFINITE) && (timer_elapsed(timeout_timer) > timeout)) {
return I2C_STATUS_TIMEOUT;
}
}
@@ -147,7 +147,7 @@ int16_t i2c_read_nack(uint16_t timeout) {
uint16_t timeout_timer = timer_read();
while (!(TWCR & (1 << TWINT))) {
- if ((timeout != I2C_TIMEOUT_INFINITE) && ((timer_read() - timeout_timer) >= timeout)) {
+ if ((timeout != I2C_TIMEOUT_INFINITE) && (timer_elapsed(timeout_timer) > timeout)) {
return I2C_STATUS_TIMEOUT;
}
}
diff --git a/platforms/avr/drivers/i2c_master.h b/platforms/avr/drivers/i2c_master.h
index 2d95846db5..04ef126c80 100644
--- a/platforms/avr/drivers/i2c_master.h
+++ b/platforms/avr/drivers/i2c_master.h
@@ -19,6 +19,8 @@
#pragma once
+#include <stdint.h>
+
#define I2C_READ 0x01
#define I2C_WRITE 0x00
diff --git a/platforms/avr/drivers/ps2/ps2_usart.c b/platforms/avr/drivers/ps2/ps2_usart.c
index 39ec930d4a..581badac64 100644
--- a/platforms/avr/drivers/ps2/ps2_usart.c
+++ b/platforms/avr/drivers/ps2/ps2_usart.c
@@ -72,8 +72,8 @@ uint8_t ps2_error = PS2_ERR_NONE;
static inline uint8_t pbuf_dequeue(void);
static inline void pbuf_enqueue(uint8_t data);
-static inline bool pbuf_has_data(void);
static inline void pbuf_clear(void);
+bool pbuf_has_data(void);
void ps2_host_init(void) {
idle(); // without this many USART errors occur when cable is disconnected
@@ -212,7 +212,7 @@ static inline uint8_t pbuf_dequeue(void) {
return val;
}
-static inline bool pbuf_has_data(void) {
+bool pbuf_has_data(void) {
uint8_t sreg = SREG;
cli();
bool has_data = (pbuf_head != pbuf_tail);
diff --git a/platforms/avr/drivers/ssd1306.c b/platforms/avr/drivers/ssd1306.c
deleted file mode 100644
index 7afbc09f00..0000000000
--- a/platforms/avr/drivers/ssd1306.c
+++ /dev/null
@@ -1,329 +0,0 @@
-#ifdef SSD1306OLED
-
-# include "ssd1306.h"
-# include "i2c.h"
-# include <string.h>
-# include "print.h"
-# include "glcdfont.c"
-# ifdef PROTOCOL_LUFA
-# include "lufa.h"
-# endif
-# include "sendchar.h"
-# include "timer.h"
-
-struct CharacterMatrix display;
-
-// Set this to 1 to help diagnose early startup problems
-// when testing power-on with ble. Turn it off otherwise,
-// as the latency of printing most of the debug info messes
-// with the matrix scan, causing keys to drop.
-# define DEBUG_TO_SCREEN 0
-
-// static uint16_t last_battery_update;
-// static uint32_t vbat;
-//#define BatteryUpdateInterval 10000 /* milliseconds */
-# define ScreenOffInterval 300000 /* milliseconds */
-# if DEBUG_TO_SCREEN
-static uint8_t displaying;
-# endif
-static uint16_t last_flush;
-
-// Write command sequence.
-// Returns true on success.
-static inline bool _send_cmd1(uint8_t cmd) {
- bool res = false;
-
- if (i2c_start_write(SSD1306_ADDRESS)) {
- xprintf("failed to start write to %d\n", SSD1306_ADDRESS);
- goto done;
- }
-
- if (i2c_master_write(0x0 /* command byte follows */)) {
- print("failed to write control byte\n");
-
- goto done;
- }
-
- if (i2c_master_write(cmd)) {
- xprintf("failed to write command %d\n", cmd);
- goto done;
- }
- res = true;
-done:
- i2c_master_stop();
- return res;
-}
-
-// Write 2-byte command sequence.
-// Returns true on success
-static inline bool _send_cmd2(uint8_t cmd, uint8_t opr) {
- if (!_send_cmd1(cmd)) {
- return false;
- }
- return _send_cmd1(opr);
-}
-
-// Write 3-byte command sequence.
-// Returns true on success
-static inline bool _send_cmd3(uint8_t cmd, uint8_t opr1, uint8_t opr2) {
- if (!_send_cmd1(cmd)) {
- return false;
- }
- if (!_send_cmd1(opr1)) {
- return false;
- }
- return _send_cmd1(opr2);
-}
-
-# define send_cmd1(c) \
- if (!_send_cmd1(c)) { \
- goto done; \
- }
-# define send_cmd2(c, o) \
- if (!_send_cmd2(c, o)) { \
- goto done; \
- }
-# define send_cmd3(c, o1, o2) \
- if (!_send_cmd3(c, o1, o2)) { \
- goto done; \
- }
-
-static void clear_display(void) {
- matrix_clear(&display);
-
- // Clear all of the display bits (there can be random noise
- // in the RAM on startup)
- send_cmd3(PageAddr, 0, (DisplayHeight / 8) - 1);
- send_cmd3(ColumnAddr, 0, DisplayWidth - 1);
-
- if (i2c_start_write(SSD1306_ADDRESS)) {
- goto done;
- }
- if (i2c_master_write(0x40)) {
- // Data mode
- goto done;
- }
- for (uint8_t row = 0; row < MatrixRows; ++row) {
- for (uint8_t col = 0; col < DisplayWidth; ++col) {
- i2c_master_write(0);
- }
- }
-
- display.dirty = false;
-
-done:
- i2c_master_stop();
-}
-
-# if DEBUG_TO_SCREEN
-# undef sendchar
-static int8_t capture_sendchar(uint8_t c) {
- sendchar(c);
- iota_gfx_write_char(c);
-
- if (!displaying) {
- iota_gfx_flush();
- }
- return 0;
-}
-# endif
-
-bool iota_gfx_init(void) {
- bool success = false;
-
- send_cmd1(DisplayOff);
- send_cmd2(SetDisplayClockDiv, 0x80);
- send_cmd2(SetMultiPlex, DisplayHeight - 1);
-
- send_cmd2(SetDisplayOffset, 0);
-
- send_cmd1(SetStartLine | 0x0);
- send_cmd2(SetChargePump, 0x14 /* Enable */);
- send_cmd2(SetMemoryMode, 0 /* horizontal addressing */);
-
-# ifdef OLED_ROTATE180
- // the following Flip the display orientation 180 degrees
- send_cmd1(SegRemap);
- send_cmd1(ComScanInc);
-# endif
-# ifndef OLED_ROTATE180
- // Flips the display orientation 0 degrees
- send_cmd1(SegRemap | 0x1);
- send_cmd1(ComScanDec);
-# endif
-
- send_cmd2(SetComPins, 0x2);
- send_cmd2(SetContrast, 0x8f);
- send_cmd2(SetPreCharge, 0xf1);
- send_cmd2(SetVComDetect, 0x40);
- send_cmd1(DisplayAllOnResume);
- send_cmd1(NormalDisplay);
- send_cmd1(DeActivateScroll);
- send_cmd1(DisplayOn);
-
- send_cmd2(SetContrast, 0); // Dim
-
- clear_display();
-
- success = true;
-
- iota_gfx_flush();
-
-# if DEBUG_TO_SCREEN
- print_set_sendchar(capture_sendchar);
-# endif
-
-done:
- return success;
-}
-
-bool iota_gfx_off(void) {
- bool success = false;
-
- send_cmd1(DisplayOff);
- success = true;
-
-done:
- return success;
-}
-
-bool iota_gfx_on(void) {
- bool success = false;
-
- send_cmd1(DisplayOn);
- success = true;
-
-done:
- return success;
-}
-
-void matrix_write_char_inner(struct CharacterMatrix *matrix, uint8_t c) {
- *matrix->cursor = c;
- ++matrix->cursor;
-
- if (matrix->cursor - &matrix->display[0][0] == sizeof(matrix->display)) {
- // We went off the end; scroll the display upwards by one line
- memmove(&matrix->display[0], &matrix->display[1], MatrixCols * (MatrixRows - 1));
- matrix->cursor = &matrix->display[MatrixRows - 1][0];
- memset(matrix->cursor, ' ', MatrixCols);
- }
-}
-
-void matrix_write_char(struct CharacterMatrix *matrix, uint8_t c) {
- matrix->dirty = true;
-
- if (c == '\n') {
- // Clear to end of line from the cursor and then move to the
- // start of the next line
- uint8_t cursor_col = (matrix->cursor - &matrix->display[0][0]) % MatrixCols;
-
- while (cursor_col++ < MatrixCols) {
- matrix_write_char_inner(matrix, ' ');
- }
- return;
- }
-
- matrix_write_char_inner(matrix, c);
-}
-
-void iota_gfx_write_char(uint8_t c) {
- matrix_write_char(&display, c);
-}
-
-void matrix_write(struct CharacterMatrix *matrix, const char *data) {
- const char *end = data + strlen(data);
- while (data < end) {
- matrix_write_char(matrix, *data);
- ++data;
- }
-}
-
-void iota_gfx_write(const char *data) {
- matrix_write(&display, data);
-}
-
-void matrix_write_P(struct CharacterMatrix *matrix, const char *data) {
- while (true) {
- uint8_t c = pgm_read_byte(data);
- if (c == 0) {
- return;
- }
- matrix_write_char(matrix, c);
- ++data;
- }
-}
-
-void iota_gfx_write_P(const char *data) {
- matrix_write_P(&display, data);
-}
-
-void matrix_clear(struct CharacterMatrix *matrix) {
- memset(matrix->display, ' ', sizeof(matrix->display));
- matrix->cursor = &matrix->display[0][0];
- matrix->dirty = true;
-}
-
-void iota_gfx_clear_screen(void) {
- matrix_clear(&display);
-}
-
-void matrix_render(struct CharacterMatrix *matrix) {
- last_flush = timer_read();
- iota_gfx_on();
-# if DEBUG_TO_SCREEN
- ++displaying;
-# endif
-
- // Move to the home position
- send_cmd3(PageAddr, 0, MatrixRows - 1);
- send_cmd3(ColumnAddr, 0, (MatrixCols * FontWidth) - 1);
-
- if (i2c_start_write(SSD1306_ADDRESS)) {
- goto done;
- }
- if (i2c_master_write(0x40)) {
- // Data mode
- goto done;
- }
-
- for (uint8_t row = 0; row < MatrixRows; ++row) {
- for (uint8_t col = 0; col < MatrixCols; ++col) {
- const uint8_t *glyph = font + (matrix->display[row][col] * (FontWidth - 1));
-
- for (uint8_t glyphCol = 0; glyphCol < FontWidth - 1; ++glyphCol) {
- uint8_t colBits = pgm_read_byte(glyph + glyphCol);
- i2c_master_write(colBits);
- }
-
- // 1 column of space between chars (it's not included in the glyph)
- i2c_master_write(0);
- }
- }
-
- matrix->dirty = false;
-
-done:
- i2c_master_stop();
-# if DEBUG_TO_SCREEN
- --displaying;
-# endif
-}
-
-void iota_gfx_flush(void) {
- matrix_render(&display);
-}
-
-__attribute__((weak)) void iota_gfx_task_user(void) {}
-
-void iota_gfx_task(void) {
- iota_gfx_task_user();
-
- if (display.dirty) {
- iota_gfx_flush();
- }
-
- if (timer_elapsed(last_flush) > ScreenOffInterval) {
- iota_gfx_off();
- }
-}
-#endif
diff --git a/platforms/avr/drivers/ssd1306.h b/platforms/avr/drivers/ssd1306.h
deleted file mode 100644
index 6eecdcfaa4..0000000000
--- a/platforms/avr/drivers/ssd1306.h
+++ /dev/null
@@ -1,87 +0,0 @@
-#pragma once
-
-#include <stdbool.h>
-#include <stdio.h>
-#include "config.h"
-
-enum ssd1306_cmds {
- DisplayOff = 0xAE,
- DisplayOn = 0xAF,
-
- SetContrast = 0x81,
- DisplayAllOnResume = 0xA4,
-
- DisplayAllOn = 0xA5,
- NormalDisplay = 0xA6,
- InvertDisplay = 0xA7,
- SetDisplayOffset = 0xD3,
- SetComPins = 0xda,
- SetVComDetect = 0xdb,
- SetDisplayClockDiv = 0xD5,
- SetPreCharge = 0xd9,
- SetMultiPlex = 0xa8,
- SetLowColumn = 0x00,
- SetHighColumn = 0x10,
- SetStartLine = 0x40,
-
- SetMemoryMode = 0x20,
- ColumnAddr = 0x21,
- PageAddr = 0x22,
-
- ComScanInc = 0xc0,
- ComScanDec = 0xc8,
- SegRemap = 0xa0,
- SetChargePump = 0x8d,
- ExternalVcc = 0x01,
- SwitchCapVcc = 0x02,
-
- ActivateScroll = 0x2f,
- DeActivateScroll = 0x2e,
- SetVerticalScrollArea = 0xa3,
- RightHorizontalScroll = 0x26,
- LeftHorizontalScroll = 0x27,
- VerticalAndRightHorizontalScroll = 0x29,
- VerticalAndLeftHorizontalScroll = 0x2a,
-};
-
-// Controls the SSD1306 128x32 OLED display via i2c
-
-#ifndef SSD1306_ADDRESS
-# define SSD1306_ADDRESS 0x3C
-#endif
-
-#define DisplayHeight 32
-#define DisplayWidth 128
-
-#define FontHeight 8
-#define FontWidth 6
-
-#define MatrixRows (DisplayHeight / FontHeight)
-#define MatrixCols (DisplayWidth / FontWidth)
-
-struct CharacterMatrix {
- uint8_t display[MatrixRows][MatrixCols];
- uint8_t *cursor;
- bool dirty;
-};
-
-extern struct CharacterMatrix display;
-
-bool iota_gfx_init(void);
-void iota_gfx_task(void);
-bool iota_gfx_off(void);
-bool iota_gfx_on(void);
-void iota_gfx_flush(void);
-void iota_gfx_write_char(uint8_t c);
-void iota_gfx_write(const char *data);
-void iota_gfx_write_P(const char *data);
-void iota_gfx_clear_screen(void);
-
-void iota_gfx_task_user(void);
-
-void matrix_clear(struct CharacterMatrix *matrix);
-void matrix_write_char_inner(struct CharacterMatrix *matrix, uint8_t c);
-void matrix_write_char(struct CharacterMatrix *matrix, uint8_t c);
-void matrix_write(struct CharacterMatrix *matrix, const char *data);
-void matrix_write_P(struct CharacterMatrix *matrix, const char *data);
-void matrix_render(struct CharacterMatrix *matrix);
diff --git a/platforms/avr/platform.mk b/platforms/avr/platform.mk
index 978199b385..39a11b28e4 100644
--- a/platforms/avr/platform.mk
+++ b/platforms/avr/platform.mk
@@ -24,6 +24,7 @@ COMPILEFLAGS += -fdata-sections
COMPILEFLAGS += -fpack-struct
COMPILEFLAGS += -fshort-enums
COMPILEFLAGS += -mcall-prologues
+COMPILEFLAGS += -fno-builtin-printf
# Linker relaxation is only possible if
# link time optimizations are not enabled.
@@ -38,7 +39,7 @@ CFLAGS += -fno-inline-small-functions
CFLAGS += -fno-strict-aliasing
CXXFLAGS += $(COMPILEFLAGS)
-CXXFLAGS += -fno-exceptions -std=c++11
+CXXFLAGS += -fno-exceptions $(CXXSTANDARD)
LDFLAGS += -Wl,--gc-sections
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 02:48:57 +0000