diff options
| author | Dominik Sliwa <dominik.sliwa@toradex.com> | 2017-05-31 11:31:31 +0200 |
|---|---|---|
| committer | Dominik Sliwa <dominik.sliwa@toradex.com> | 2017-05-31 11:31:31 +0200 |
| commit | 41a46914821b1ea72c6dd68b308a3740276139ee (patch) | |
| tree | 460e7df42a6c3e0f79fca2f60351ef2f377083b1 | |
| parent | c9d5d6b248a12f7c6b66d8a64b93fb0c8c6cae4d (diff) | |
tsc:change touch detection polarity
Limited number of boards appear to have issues with previous method.
| -rw-r--r-- | source/adc_task.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/source/adc_task.c b/source/adc_task.c index bd7215d..456b9b2 100644 --- a/source/adc_task.c +++ b/source/adc_task.c @@ -138,7 +138,7 @@ void tsc_task(void *pvParameters) pin_config_pd.mux = kPORT_MuxAsGpio; pin_config_pd.openDrainEnable = kPORT_OpenDrainDisable; - pin_config_pd.pullSelect = kPORT_PullDown; + pin_config_pd.pullSelect = kPORT_PullUp; pin_config_pd.slewRate = kPORT_FastSlewRate; pin_config_pd.passiveFilterEnable = kPORT_PassiveFilterDisable; pin_config_pd.driveStrength = kPORT_LowDriveStrength; @@ -156,12 +156,12 @@ void tsc_task(void *pvParameters) channel.enableInterruptOnConversionCompleted = false; while(1) { - //Touch detect power Y+, enable pulldown on xp and read xp GPIO - ts_force_drive(0, 0, 0, 1); + //Touch detect: power Y-, enable pullup on xp and read xp GPIO + ts_force_drive(0, 0, 1, 0); PORT_SetPinConfig(PORTB, 6u, &pin_config_pd); vTaskDelay(10); old_status = status; - status = GPIO_ReadPinInput(GPIOB, 6u) ? PEN_DOWN:PEN_UP; + status = GPIO_ReadPinInput(GPIOB, 6u) ? PEN_UP:PEN_DOWN; PORT_SetPinConfig(PORTB, 6u, &pin_config_ana); if (status != old_status) @@ -213,7 +213,7 @@ int tsc_registers(dspi_transfer_t *spi_transfer) uint8_t *rx_buf = spi_transfer->rxData; uint8_t *tx_buf = &spi_transfer->txData[1]; if (rx_buf[0] == APALIS_TK1_K20_READ_INST) { - switch (rx_buf[1]) { + switch (rx_buf[2]) { case APALIS_TK1_K20_TSCREG: tx_buf[0] = 0x00; return 1; @@ -295,7 +295,7 @@ int adc_registers(dspi_transfer_t *spi_transfer) uint8_t *tx_buf = &spi_transfer->txData[1]; if (rx_buf[0] == APALIS_TK1_K20_READ_INST) { - switch (rx_buf[1]) { + switch (rx_buf[2]) { case APALIS_TK1_K20_ADCREG: tx_buf[0] = 0x00; return 1; |