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IS31FL3733 Dirty page fix (#7079)

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* IS31FL3733 Dirty page fix

Function IS31FL3733_update_led_control_registers was never setting update register to false. As a result the led on/off page was being written every transaction even when it was not modified. This is ineficient and causes lots of bandwidth use.

-> Fix the IS31FL3733_update_led_control_registers.
-> After testing it was evident that failed I2C transactions could corrupt the Led on/off register.
-> Update IS31FL3733_write_pwm_buffer and IS31FL3733_write_register functions to return 0 upon succesful tranmission and 1 if any of the transmitions within the function fail.
-> Modify IS31FL3733_update_pwm_buffers function so if any of the IS31FL3733_write_pwm_buffer transuction fails, the g_led_control_registers_update_required register is set to true forcing a rewrite of the led on/off register in case it was corrupted.

* Minor comment update

* Upsie:)

* Update is31fl3733.c

* Return fix

* more return fix

* type change

* more boolian logic reversal:)
This commit is contained in:
yiancar 2019-11-25 20:33:52 +00:00 committed by Joel Challis
parent f0f161e572
commit c0fe8dbfb4
2 changed files with 34 additions and 20 deletions
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50
drivers/issi/is31fl3733.c
View file

@ -24,10 +24,10 @@
# include "wait.h"
#endif
#include "is31fl3733.h"
#include <string.h>
#include "i2c_master.h"
#include "progmem.h"
#include "is31fl3733.h"
// This is a 7-bit address, that gets left-shifted and bit 0
// set to 0 for write, 1 for read (as per I2C protocol)
@ -80,43 +80,54 @@ bool g_pwm_buffer_update_required[DRIVER_COUNT] = {false};
uint8_t g_led_control_registers[DRIVER_COUNT][24] = {{0}, {0}};
bool g_led_control_registers_update_required[DRIVER_COUNT] = {false};
void IS31FL3733_write_register(uint8_t addr, uint8_t reg, uint8_t data) {
bool IS31FL3733_write_register(uint8_t addr, uint8_t reg, uint8_t data) {
// If the transaction fails function returns false.
g_twi_transfer_buffer[0] = reg;
g_twi_transfer_buffer[1] = data;
#if ISSI_PERSISTENCE > 0
for (uint8_t i = 0; i < ISSI_PERSISTENCE; i++) {
if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, ISSI_TIMEOUT) == 0) break;
if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, ISSI_TIMEOUT) != 0) {
return false;
}
}
#else
i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, ISSI_TIMEOUT);
if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, ISSI_TIMEOUT) != 0) {
return false;
}
#endif
return true;
}
void IS31FL3733_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer) {
// assumes PG1 is already selected
// transmit PWM registers in 12 transfers of 16 bytes
bool IS31FL3733_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer) {
// Assumes PG1 is already selected.
// If any of the transactions fails function returns false.
// Transmit PWM registers in 12 transfers of 16 bytes.
// g_twi_transfer_buffer[] is 20 bytes
// iterate over the pwm_buffer contents at 16 byte intervals
// Iterate over the pwm_buffer contents at 16 byte intervals.
for (int i = 0; i < 192; i += 16) {
g_twi_transfer_buffer[0] = i;
// copy the data from i to i+15
// device will auto-increment register for data after the first byte
// thus this sets registers 0x00-0x0F, 0x10-0x1F, etc. in one transfer
// Copy the data from i to i+15.
// Device will auto-increment register for data after the first byte
// Thus this sets registers 0x00-0x0F, 0x10-0x1F, etc. in one transfer.
for (int j = 0; j < 16; j++) {
g_twi_transfer_buffer[1 + j] = pwm_buffer[i + j];
}
#if ISSI_PERSISTENCE > 0
for (uint8_t i = 0; i < ISSI_PERSISTENCE; i++) {
if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, ISSI_TIMEOUT) == 0) break;
if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, ISSI_TIMEOUT) != 0) {
return false;
}
}
#else
i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, ISSI_TIMEOUT);
if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, ISSI_TIMEOUT) != 0) {
return false;
}
#endif
}
return true;
}
void IS31FL3733_init(uint8_t addr, uint8_t sync) {
@ -213,11 +224,15 @@ void IS31FL3733_set_led_control_register(uint8_t index, bool red, bool green, bo
void IS31FL3733_update_pwm_buffers(uint8_t addr, uint8_t index) {
if (g_pwm_buffer_update_required[index]) {
// Firstly we need to unlock the command register and select PG1
// Firstly we need to unlock the command register and select PG1.
IS31FL3733_write_register(addr, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5);
IS31FL3733_write_register(addr, ISSI_COMMANDREGISTER, ISSI_PAGE_PWM);
IS31FL3733_write_pwm_buffer(addr, g_pwm_buffer[index]);
// If any of the transactions fail we risk writing dirty PG0,
// refresh page 0 just in case.
if (!IS31FL3733_write_pwm_buffer(addr, g_pwm_buffer[index])){
g_led_control_registers_update_required[index] = true;
}
}
g_pwm_buffer_update_required[index] = false;
}
@ -231,6 +246,5 @@ void IS31FL3733_update_led_control_registers(uint8_t addr, uint8_t index) {
IS31FL3733_write_register(addr, i, g_led_control_registers[index][i]);
}
}
// This seems counter intuitive but sometimes this page can get corrupted. So update it every time.
// g_led_control_registers_update_required[index] = false;
g_led_control_registers_update_required[index] = false;
}

4
drivers/issi/is31fl3733.h
View file

@ -32,8 +32,8 @@ typedef struct is31_led {
extern const is31_led g_is31_leds[DRIVER_LED_TOTAL];
void IS31FL3733_init(uint8_t addr, uint8_t sync);
void IS31FL3733_write_register(uint8_t addr, uint8_t reg, uint8_t data);
void IS31FL3733_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer);
bool IS31FL3733_write_register(uint8_t addr, uint8_t reg, uint8_t data);
bool IS31FL3733_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer);
void IS31FL3733_set_color(int index, uint8_t red, uint8_t green, uint8_t blue);
void IS31FL3733_set_color_all(uint8_t red, uint8_t green, uint8_t blue);