Hello,
In my project, I use the RMT module to receive RC5 command. I also use the SPI bus (HSPI in master mode, transmit only) to control a LED display. Everything is working.
Now I want to add a second SPI bus to communicate with another uController. So I use the VSPI (in master mode). I've initialized the new SPI and sent data on the bus. The data are sent correctly on the bus but I have an error with the RMT module and the module is unable to decode the RC5 frames.
E (15122) rmt: rmt_driver_uninstall(674): No RMT driver for this channel
E (16222) rmt: rmt_driver_uninstall(674): No RMT driver for this channel
E (17322) rmt: rmt_driver_uninstall(674): No RMT driver for this channel
E (18422) rmt: rmt_driver_uninstall(674): No RMT driver for this channel
E (19522) rmt: rmt_driver_uninstall(674): No RMT driver for this channel
Is there a shared memory between SPI and RMT modules or something like that ? How can I fix that issue ?
Best regards
Vincent
SPI vs RMT conflict
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- Posts: 9711
- Joined: Thu Nov 26, 2015 4:08 am
Re: SPI vs RMT conflict
No, the devices are completely independent; there is no hardware reason for the one to affect the other.
RMT vs Timer conflict
Hello
My project uses many driver like I2C, SPI, WIFI, RMT, Timer, ...
When I install the RMT driver, the timer interrupt is never reached. If I disable the RMT initialization, the timer interrupt is reached.
I don't understand the link between the RMT and the timers.
Best regards,
Vincent
My project uses many driver like I2C, SPI, WIFI, RMT, Timer, ...
When I install the RMT driver, the timer interrupt is never reached. If I disable the RMT initialization, the timer interrupt is reached.
I don't understand the link between the RMT and the timers.
Code: Select all
void RC5_Init(void)
{
rmt_rx.channel = RMT_RX_CHANNEL;
rmt_rx.gpio_num = IR_RECEIVER_PIN;
rmt_rx.clk_div = RMT_CLK_DIV;
rmt_rx.mem_block_num = 1;
rmt_rx.rmt_mode = RMT_MODE_RX;
rmt_rx.rx_config.filter_en = true;
rmt_rx.rx_config.filter_ticks_thresh = 255;
rmt_rx.rx_config.idle_threshold = RMT_ITEM32_TIMEOUT_us / 10 * (RMT_TICK_10_US);
rmt_config(&rmt_rx);
TaskIsStarted = false;
ESP_ERROR_CHECK(rmt_driver_install(rmt_rx.channel, 1000, 0));
ESP_LOGI(Tag, "IR receiver is initialized");
}
Code: Select all
void Mode_Init(void)
{
uint8_t buffer[SEQUENCE_BUFFER_SIZE];
SequenceFifo = Fifo8bits_Create(buffer, SEQUENCE_BUFFER_SIZE);
RecordSequenceIsFinished = false;
MovementIsInProgress = false;
RotationIsInProgress = false;
TimerHw_Init(1, 0, true, MOVEMENT_DURATION_us, ISR_EndOfMovement);
}
Code: Select all
void TimerHw_Init(int16_t timerGroup, int timerIndex, bool autoReload, double interval, TimerCallback callback)
{
// Select and initialize basic parameters of the timer
timer_config_t config;
config.divider = TIMER_DIVIDER;
config.counter_dir = TIMER_COUNT_UP;
config.counter_en = TIMER_PAUSE;
config.alarm_en = TIMER_ALARM_EN;
config.intr_type = TIMER_INTR_LEVEL;
config.auto_reload = autoReload;
if ((timerGroup < TIMER_GROUP_MAX) && (timerIndex < TIMER_MAX))
{
timer_init(timerGroup, timerIndex, &config);
// Timer's counter will initially start from value below
// Also, if auto_reload is set, this value will be automatically reload on alarm
timer_set_counter_value(timerGroup, timerIndex, 0x00000000ULL);
// Configure the alarm value and the interrupt on alarm
timer_set_alarm_value(timerGroup, timerIndex, interval);
timer_enable_intr(timerGroup, timerIndex);
timer_isr_register(timerGroup, timerIndex, callback,
(void*) timerIndex, ESP_INTR_FLAG_IRAM, NULL);
ESP_LOGI(Tag, "Group %d Timer %d is initialized", timerGroup, timerIndex);
}
else
{
ESP_LOGE(Tag, "Invalid parameters, Group = %d, Index = %d", timerGroup, timerIndex);
}
}
Code: Select all
static void IRAM_ATTR ISR_EndOfMovement(void* para)
{
// Retrieve the interrupt status and the counter value
// from the timer that reported the interrupt
uint32_t intr_status = TIMERG1.int_st_timers.val;
TIMERG1.hw_timer[0].update = 1;
// Clear the interrupt and update the alarm time for the timer with without reload
if (intr_status & BIT(0))
{
TIMERG1.int_clr_timers.t0 = 1;
}
// After the alarm has been triggered, we need enable it again, so it is triggered the next time
TIMERG1.hw_timer[0].config.alarm_en = TIMER_ALARM_EN;
}
Vincent
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