Difference between revisions of "Pico-sdk studies"
From Wiki at Neela Nurseries
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m (Add notes on pico-sdk NUM_DMA_CHANNELS symbol.) |
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ted@localhost:~/reference/pico-sdk$ | ted@localhost:~/reference/pico-sdk$ | ||
</pre> | </pre> | ||
| + | |||
| + | |||
| + | == DMA driver details == | ||
| + | |||
| + | Search for . . . | ||
| + | |||
| + | ted@localhost:~/projects/zephyr-based/workspace-rpi-pico-work/pico-sdk$ grep -nr NUM_DMA_CHANNELS ./* | ||
| + | ./src/host/pico_platform/include/hardware/platform_defs.h:12:#define NUM_DMA_CHANNELS 12u | ||
| + | . . . | ||
| + | ./src/rp2040/hardware_structs/include/hardware/structs/dma.h:106: dma_channel_hw_t ch[NUM_DMA_CHANNELS]; // 12 | ||
| + | ./src/rp2040/hardware_structs/include/hardware/structs/dma.h:194: } ch[NUM_DMA_CHANNELS]; | ||
| + | |||
Revision as of 06:44, 17 August 2022
Device_tree_from_scratch :: Spi_device_tree_source_code :: Pico-sdk_studies
2022-08-15
Pico SDK Studies
ted@localhost:~/reference/pico-sdk$ grep -nr unreset_block_wait ./*
./src/rp2_common/hardware_resets/include/hardware/resets.h:88:static inline void unreset_block_wait(uint32_t bits) {
./src/rp2_common/hardware_uart/uart.c:34: unreset_block_wait(uart_get_index(uart) ? RESETS_RESET_UART1_BITS : RESETS_RESET_UART0_BITS);
./src/rp2_common/pico_runtime/runtime.c:80: unreset_block_wait(RESETS_RESET_BITS & ~(
./src/rp2_common/pico_runtime/runtime.c:110: unreset_block_wait(RESETS_RESET_BITS);
./src/rp2_common/hardware_pll/pll.c:54: unreset_block_wait(pll_reset);
./src/rp2_common/hardware_i2c/i2c.c:25: unreset_block_wait(i2c == i2c0 ? RESETS_RESET_I2C0_BITS : RESETS_RESET_I2C1_BITS);
Binary file ./src/rp2_common/hardware_spi/.spi.c.swp matches
./src/rp2_common/hardware_spi/spi.c:18: unreset_block_wait(spi == spi0 ? RESETS_RESET_SPI0_BITS : RESETS_RESET_SPI1_BITS);
./src/rp2_common/hardware_rtc/rtc.c:29: unreset_block_wait(RESETS_RESET_RTC_BITS);
./src/rp2_common/hardware_adc/adc.c:14: unreset_block_wait(RESETS_RESET_ADC_BITS);
./test/hardware_pwm_test/hardware_pwm_test.c:36: unreset_block_wait(RESETS_RESET_PWM_BITS);
ted@localhost:~/reference/pico-sdk$
DMA driver details
Search for . . .
ted@localhost:~/projects/zephyr-based/workspace-rpi-pico-work/pico-sdk$ grep -nr NUM_DMA_CHANNELS ./* ./src/host/pico_platform/include/hardware/platform_defs.h:12:#define NUM_DMA_CHANNELS 12u . . . ./src/rp2040/hardware_structs/include/hardware/structs/dma.h:106: dma_channel_hw_t ch[NUM_DMA_CHANNELS]; // 12 ./src/rp2040/hardware_structs/include/hardware/structs/dma.h:194: } ch[NUM_DMA_CHANNELS];
