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add set kbd backlight via i2c example in picocalc_helloworld

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This commit is contained in:
cuu 2025-04-27 15:32:55 +08:00
parent f2fa13099c
commit 111319e22d
3 changed files with 48 additions and 0 deletions
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28
Code/picocalc_helloworld/i2ckbd/i2ckbd.c
View File

@ -82,3 +82,31 @@ int read_battery() {
}
return -1;
}
int set_kbd_backlight(uint8_t val){
int retval;
uint16_t buff = 0;
unsigned char msg[2];
msg[0] = 0x0A;
msg[1] = val;
bitSet(msg[0],7);
if (i2c_inited == 0) return -1;
retval = i2c_write_timeout_us(I2C_KBD_MOD, I2C_KBD_ADDR, msg, 2, false, 500000);
if (retval == PICO_ERROR_GENERIC || retval == PICO_ERROR_TIMEOUT) {
printf("read_battery i2c write error\n");
return -1;
}
sleep_ms(16);
retval = i2c_read_timeout_us(I2C_KBD_MOD, I2C_KBD_ADDR, (unsigned char *) &buff, 2, false, 500000);
if (retval == PICO_ERROR_GENERIC || retval == PICO_ERROR_TIMEOUT) {
printf("read_battery i2c read error read\n");
return -1;
}
if (buff != 0) {
return buff;
}
return -1;
}

3
Code/picocalc_helloworld/i2ckbd/i2ckbd.h
View File

@ -16,7 +16,10 @@
void init_i2c_kbd();
int read_i2c_kbd();
int read_battery();
int set_kbd_backlight(uint8_t);
#define bitRead(value, bit) (((value) >> (bit)) & 0x01)
#define bitClear(value, bit) ((value) &= ~(1 << (bit)))
#define bitSet(value, bit) ((value) |= (1 << (bit)))
#endif

17
Code/picocalc_helloworld/main.c
View File

@ -220,6 +220,16 @@ void test_battery(){
lcd_print_string(buf);
}
void test_kbd_backlight(uint8_t val) {
char buf[64];
int kbd_backlight = set_kbd_backlight(val);
kbd_backlight = kbd_backlight>>8;
sprintf(buf, "kbd backlight %d\n", kbd_backlight);
printf("%s", buf);
lcd_print_string(buf);
}
int main() {
set_sys_clock_khz(133000, true);
stdio_init_all();
@ -252,6 +262,13 @@ int main() {
sleep_ms(2000);
test_battery();
test_kbd_backlight(50);
sleep_ms(1000);
test_kbd_backlight(100);
sleep_ms(1000);
test_kbd_backlight(255);
sleep_ms(1000);
test_kbd_backlight(0);
while (1) {
int c = lcd_getc(0);
if(c != -1 && c > 0) {