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authorlonkaars <loek@pipeframe.xyz>2022-03-23 17:07:19 +0100
committerlonkaars <loek@pipeframe.xyz>2022-03-23 17:07:19 +0100
commit2155868ab3358535d4915f39dc192189bc57e938 (patch)
treeff418b5488a511fc26a7ab3a33f77226d5dd6681
parentb3344df3e3a3594f133c2c051df981d75e0112b8 (diff)
working display driver :tada:
-rw-r--r--src/main.c33
-rw-r--r--src/tm1637.c45
-rw-r--r--src/tm1637.h37
3 files changed, 79 insertions, 36 deletions
diff --git a/src/main.c b/src/main.c
index 7978b16..264d56a 100644
--- a/src/main.c
+++ b/src/main.c
@@ -84,8 +84,10 @@ void interrupt_setup() {
* 0 or 1 which indicates if the LED should be turned on (1) or off (0).
*/
void led_write(int num, int on) {
- GPIOB->ODR &= ~(1 << leds[num]);
- GPIOB->ODR |= (on << leds[num]);
+ int pin = leds[num];
+ GPIOB->ODR ^= (((GPIOB->ODR & (1 << pin)) >> pin) ^ on) << pin;
+ // GPIOB->ODR &= ~(1 << leds[num]);
+ // GPIOB->ODR |= (on << leds[num]);
}
/*
@@ -132,31 +134,34 @@ void timer_delay(unsigned short millis) {
while ((TIM3->SR & TIM_SR_CC1IF) == 0); // wait until c/c goes high
}
+void timer_display(unsigned int minutes, unsigned int seconds, bool colon) {
+ tm1637_segmentsend(0, tm1637_font[minutes / 10]);
+ tm1637_segmentsend(1, tm1637_font[minutes % 10] | (colon * TM1637_COLON));
+ tm1637_segmentsend(2, tm1637_font[seconds / 10]);
+ tm1637_segmentsend(3, tm1637_font[seconds % 10]);
+}
+
int main() {
shield_config();
tm1637_begin();
- timer_delay(2000);
+ timer_delay(100);
unsigned int minutes = 0;
unsigned int seconds = 0;
- TM1637Sequence seq;
- uint8_t dis_br_data[] = { 0b10001111 };
- seq.data = dis_br_data;
- seq.length = 1;
- _tm1637_send(seq);
-
- uint8_t dis_seg_data[] = { 0b11000001, 0b01111111 };
- seq.data = dis_seg_data;
- seq.length = 2;
- _tm1637_send(seq);
+ tm1637_dispcfg(7, 1);
while (1) {
- timer_delay(1e3);
+ timer_delay(500);
+ timer_display(minutes, seconds, false);
+ timer_delay(500);
+ timer_display(minutes, seconds, true);
+
seconds++;
if (seconds >= 60) {
seconds = 0;
minutes++;
+ if (minutes >= 100) minutes = 0;
}
}
}
diff --git a/src/tm1637.c b/src/tm1637.c
index 4e6e68c..9cc79d6 100644
--- a/src/tm1637.c
+++ b/src/tm1637.c
@@ -2,11 +2,6 @@
#include "tm1637.h"
#include "stm32f091xc.h"
-void _tm1637_micro_delay() {
- timer_delay(10);
- // for(unsigned int x = 0; x < 10e4; x++);
-}
-
/** @brief reset gpio mode registers for dio */
void _tm1637_GPIOMODE_reset() {
GPIOA->MODER &= ~(0b11 << (PINOUT_DISP_DIO * 2));
@@ -36,9 +31,6 @@ void _tm1637_GPIOMODE_open_drain() {
*/
void _tm1637_pin_write(uint32_t pin, bool state) {
GPIOA->ODR ^= (((GPIOA->ODR & (1 << pin)) >> pin) ^ state) << pin;
-
- if (pin == PINOUT_DISP_CLK) led_write(0, state);
- if (pin == PINOUT_DISP_DIO) led_write(1, state);
}
void tm1637_begin() {
@@ -50,31 +42,24 @@ void tm1637_begin() {
_tm1637_pin_write(PINOUT_DISP_CLK, 1);
_tm1637_pin_write(PINOUT_DISP_DIO, 1);
-
- _tm1637_micro_delay();
}
void _tm1637_start() {
_tm1637_pin_write(PINOUT_DISP_DIO, 0);
- _tm1637_micro_delay();
}
void _tm1637_stop() {
_tm1637_pin_write(PINOUT_DISP_CLK, 1);
_tm1637_pin_write(PINOUT_DISP_DIO, 1);
- _tm1637_micro_delay();
}
bool _tm1637_ack() {
_tm1637_pin_write(PINOUT_DISP_CLK, 0);
_tm1637_pin_write(PINOUT_DISP_DIO, 0);
_tm1637_GPIOMODE_open_drain();
- _tm1637_micro_delay();
_tm1637_pin_write(PINOUT_DISP_CLK, 1);
- _tm1637_micro_delay();
_tm1637_pin_write(PINOUT_DISP_CLK, 0);
_tm1637_GPIOMODE_gp_output();
- _tm1637_micro_delay();
return true;
}
@@ -90,21 +75,39 @@ TM1637Sequence _tm1637_send(TM1637Sequence command) {
for (uint32_t byte = 0; byte < command.length; byte++) {
for (uint8_t bit = 0; bit < 8; bit++) {
- uint8_t rev_bit = 7 - bit;
_tm1637_pin_write(PINOUT_DISP_CLK, 0);
- _tm1637_pin_write(PINOUT_DISP_DIO, (command.data[byte] & (1 << rev_bit)) >> rev_bit);
- _tm1637_micro_delay();
+ _tm1637_pin_write(PINOUT_DISP_DIO, (command.data[byte] & (1 << bit)) >> bit);
_tm1637_pin_write(PINOUT_DISP_CLK, 1);
- _tm1637_micro_delay();
}
//TODO: confirm ack
/*bool ack =*/ _tm1637_ack();
}
- _tm1637_micro_delay();
-
// stop condition
_tm1637_stop();
return response;
}
+
+void tm1637_dispcfg(uint8_t brightness, bool on) {
+ uint8_t dis_data[] = {
+ (uint8_t)(0b10000000 | (on << 3) | (brightness)),
+ };
+ TM1637Sequence seq = {
+ .data = dis_data,
+ .length = 1,
+ };
+ _tm1637_send(seq);
+}
+
+void tm1637_segmentsend(uint8_t segment, uint8_t data) {
+ uint8_t dis_data[] = {
+ (uint8_t)(0b11000000 | segment),
+ data,
+ };
+ TM1637Sequence seq = {
+ .data = dis_data,
+ .length = 2,
+ };
+ _tm1637_send(seq);
+}
diff --git a/src/tm1637.h b/src/tm1637.h
index b9fa42c..0c1ed66 100644
--- a/src/tm1637.h
+++ b/src/tm1637.h
@@ -3,6 +3,24 @@
#include <stdint.h>
#include <stdbool.h>
+#define TM1637_FONT_0 (0x3f)
+#define TM1637_FONT_1 (0x06)
+#define TM1637_FONT_2 (0x5b)
+#define TM1637_FONT_3 (0x4f)
+#define TM1637_FONT_4 (0x66)
+#define TM1637_FONT_5 (0x6d)
+#define TM1637_FONT_6 (0x7d)
+#define TM1637_FONT_7 (0x07)
+#define TM1637_FONT_8 (0x7f)
+#define TM1637_FONT_9 (0x6f)
+#define TM1637_FONT_A (0x77)
+#define TM1637_FONT_B (0x7c)
+#define TM1637_FONT_C (0x39)
+#define TM1637_FONT_D (0x5e)
+#define TM1637_FONT_E (0x79)
+#define TM1637_FONT_F (0x71)
+#define TM1637_COLON (0x80)
+
typedef struct {
uint8_t* data;
uint32_t length;
@@ -25,5 +43,22 @@ void tm1637_dispcfg(uint8_t brightness, bool on);
*/
void tm1637_segmentsend(uint8_t segment, uint8_t data);
+static const uint8_t tm1637_font[16] = {
+ TM1637_FONT_0,
+ TM1637_FONT_1,
+ TM1637_FONT_2,
+ TM1637_FONT_3,
+ TM1637_FONT_4,
+ TM1637_FONT_5,
+ TM1637_FONT_6,
+ TM1637_FONT_7,
+ TM1637_FONT_8,
+ TM1637_FONT_9,
+ TM1637_FONT_A,
+ TM1637_FONT_B,
+ TM1637_FONT_C,
+ TM1637_FONT_D,
+ TM1637_FONT_E,
+ TM1637_FONT_F,
+};
-TM1637Sequence _tm1637_send(TM1637Sequence command);